Language：English   Publishing type：Research paper (scientific journal)   Publisher：Japan Institute of Metals  

DOI： 10.2320/matertrans.mt-m2025044

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.mtcomm.2025.113151

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.scriptamat.2025.116624

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Authorship：Corresponding author   Publishing type：Research paper (scientific journal)   Publisher：American Chemical Society (ACS)  

DOI： 10.1021/acsaenm.5c00086

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.matchemphys.2025.130817

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.msea.2025.148095

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.matlet.2024.137635

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jmrt.2024.12.244

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Publishing type：Research paper (scientific journal)   Publisher：IOP Publishing  

Abstract

Ni–Mn–Ga ferromagnetic shape memory alloys (FSMAs) are promising materials for actuator and transducer devices. Their intrinsic brittleness and high fabrication cost in the bulk form are issues to be solved. One of the solutions is a development of composites comprising these materials as a filler component whereby representing an emerging research field in the FSMAs. To address the improvement and stability challenges of the magnetic field-induced martensitic variant reorientation (MVR) characteristics of the particles in the previously elaborated ‘Ni–Mn–Ga single-crystalline particles/silicone rubber’ composites and to unveil new aspects of their functional behaviors, in the present work, we have investigated MVR characteristics as a function of compression cycling and under huge in-situ opposing contractions. It was found that after cycling with the 30% of compressive strain along the particle chains, the value of switching magnetic field needed to start MVR events was notably reduced, whereas it was almost intact when in-situ measured under the same compression level. In-situ measurements of the ‘magnetization versus magnetic field’ curves of the composite squeezed by 50% or 70% did not show MVR blocking. Instead, they revealed both a drastic decrease of the MVR switching field and narrowing of the MVR interval caused by the barreling effect. The results can be useful for the development of novel types of actuators and transducers.

DOI： 10.1088/1361-665x/ad939d

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Other Link： https://iopscience.iop.org/article/10.1088/1361-665X/ad939d/pdf

Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jallcom.2024.176841

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Publishing type：Research paper (international conference proceedings)  

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.intermet.2024.108432

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.actamat.2024.120158

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Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

Abstract

Due to the critical world population aging issue, biomaterials are important topics in the biomedical community. Among the biomedical materials, shape memory alloys (SMAs) are considered to be promising materials owing to their functionalities, such as shape memory effect (SME) and superelasticity (SE). Ti–Mo–Al-based alloys, which are biocompatible materials, are basic materials in the Ti-based SMAs due to the evaluation of the phase stability through the calculations of Mo and Al equivalents. This study, in addition, introduced Zr into the Ti–Mo–Al-based alloys for its highly biocompatibility and being a fine modifier to tune the phase stability. The mechanical (i.e., strength and elongation) and functional (i.e., SME and SE) properties have been investigated in this study to reveal the practicability of the biomedical applications for human usage. It was found that addition of Zr to the Ti–Mo alloy shows slight influence on the mechanical properties of the binary Ti–Mo alloy. With the addition of Al, that is, ternary Ti–Mo–Al alloys, two-stage yielding was found in the tensile examinations. Among all the alloys, the Ti–5.5Mo–4Al, the Ti–5.5Mo–4Al–6Zr, and the Ti–5.5Mo–8Al–6Zr (mol pct) alloys performed excellent shape recovery of about 100 pct in the bending and heating tests. Especially, the Ti–5.5Mo–4Al–6Zr and the Ti–5.5Mo–8Al–6Zr alloys further show high strength. Results in this study could be a guideline for the design of the fundamental Ti–Mo–Al-based SMAs.

DOI： 10.1007/s11661-024-07529-y

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Other Link： https://link.springer.com/article/10.1007/s11661-024-07529-y/fulltext.html

Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.msea.2024.146956

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.mtla.2024.102194

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Publishing type：Research paper (international conference proceedings)  

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jallcom.2024.174509

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jallcom.2023.173236

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jmrt.2023.11.253

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jallcom.2023.172176

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Publishing type：Research paper (scientific journal)   Publisher：MDPI AG  

Ferromagnetic shape memory alloys (FSMAs), which are potential candidates for future technologies (i.e., actuators in robots), have been paid much attention for their high work per volume and rapid response as external stimulation, such as a magnetic field, is imposed. Among all the FSMAs, the Ni–Mn–Ga-based alloys were considered promising materials due to their appropriate phase transformation temperatures and ferromagnetism. Nevertheless, their intrinsic embrittlement issue and sluggish twin motion due to the inhibition of grain boundaries restrict their practicability. This study took advantage of the single-crystal Ni–Mn–Ga cube/silicone rubber composite materials to solve the two aforementioned difficulties. The single-crystal Ni–Mn–Ga cube was prepared by using a high-temperature alloying procedure and a floating-zone (FZ) method, and the cubes were verified to be the near-{100}p Ni–Mn–Ga alloy. Various room temperature (RT) curing silicone rubbers were utilized as matrix materials. Furthermore, polystyrene foam particles (PFP) were used to provide pores, allowing a porous silicone rubber matrix. It was found that the elastic modulus of the silicone rubber was successfully reduced by introducing the PFP. Additionally, the magnetic field-induced martensite variant reorientation (MVR) was greatly enhanced by introducing a porous structure into the silicone rubber. The single-crystal Ni–Mn–Ga cube/porous silicone rubber composite materials are considered to be promising materials for applications in actuators.

DOI： 10.3390/mi14081604

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.3390/app13148475

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.2355/isijinternational.ISIJINT-2023-013

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Publishing type：Research paper (scientific journal)   Publisher：MDPI AG  

The phase stability, mechanical properties, and functional properties of Ti–5.5Al–11.8[Mo]eq alloys are focused on in this study by substituting 3d transition metal elements (V, Cr, Co, and Ni) for Mo as β-stabilizers to achieve similar β phase stability and room temperature (RT) superelasticity. The ternary alloy systems with the equivalent chemical compositions of Ti–5.5Al–17.7V, Ti–5.5Al–9.5Cr, Ti–5.5Al–7.0Co, and Ti–5.5Al–9.5Ni (mass%) alloys were selected as the target materials based on the Mo equivalent formula, which has been applied for the Ti–5.5Al–11.8Mo alloy in the literature. The fundamental mechanical properties and functionalities of the selected alloys were examined. The β phase was stabilized at RT in all alloys except for the Ti–Al–V alloy. Among all alloys, the Ti–Al–Ni alloy exhibited superelasticity in the cyclic loading–unloading tensile tests at RT. As a result, similar to the Ti–5.5Al–11.8Mo mother alloy, by utilizing the Mo equivalent formula to substitute 3d transition metal elements for Mo, a RT superelasticity was successfully imposed.

DOI： 10.3390/ma16134526

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Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

Abstract

Ni–Mn–Ga single crystals (SC) exhibiting a giant magnetic field induced strain (MFIS), resulting from twin boundaries rearrangements, are excellent materials for novel actuators although enhanced brittleness and high costs are remaining the issues for applications. In polycrystalline state Ni–Mn–Ga alloys show small MFIS due to grain boundary constraints. By simple size reduction of the mentioned materials it is hardly possible to create quasi-two-dimensional MFIS actuators on the microscale with a pertinent out-of-plane performance. In pursuit of the trend for next generation materials and functions by design, in the present work we have developed a laminate composite as a prototype of microactuator with the out-of-plane stroke being driven by a framework of magnetostrain responsive Ni–Mn–Ga microparticles. The laminate consisted of the layer of crystallographically oriented Ni–Mn–Ga semi-free SC microparticles sandwiched between bonding polymer and Cu foils. Such design provided a particles isolation with a minimum constraint condition from the polymer. MFIS of the individual particles and the whole laminate composite was investigated by X-ray micro-CT 3D imaging. Both particles and laminate exhibited the same recoverable out-of-plane stroke produced by the particles´ MFIS of around 3% under 0.9 T. The developed microactuator design is promising for applications in the areas of micro-robotics, optical image stabilization in cameras, pumps for microfluidics etc.

DOI： 10.1038/s41598-023-33945-y

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Other Link： https://www.nature.com/articles/s41598-023-33945-y

Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.3390/act12050211

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.scriptamat.2023.115277

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.matchar.2023.112850

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jmrt.2023.02.173

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jmbbm.2023.105800

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Japan Institute of Metals  

DOI： 10.2320/matertrans.MT-MBW2022001

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.msea.2023.144790

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.matchemphys.2023.127390

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jallcom.2022.166862

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jmrt.2022.12.174

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jallcom.2022.166016

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jmbbm.2022.105358

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.msea.2022.143312

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier {BV}  

DOI： 10.1016/j.actamat.2022.117705

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Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.actamat.2021.117530

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Publishing type：Research paper (scientific journal)   Publisher：MDPI AG  

To utilize β-Ti based high temperature (HT) shape memory alloys (SMAs), a high Al concentration of 14 mol% was designed for sufficient suppressing the undesired ω-phase. HTSMA exhibits shape memory effect (SME) above 373 K, and thus the operating temperature is over 373 K. However, the SME and the mechanical properties of most β-Ti SMAs deteriorate after holding at elevated temperatures due to the ω-embrittlement. The Ti-4.5Mo-14Al alloy (mol%) and the Ti-6Mo-7Al alloy as a comparison, both of which possess the identical reverse martensitic transformation start temperature of 407 K, were isothermally held at 393 K for up to 360 ks, and deformation behaviors and microstructures were investigated. It was found that after the isothermal holding, the deformation behavior of the Ti-6Mo-7Al alloy altered significantly; on the other hand, that of the Ti-4.5Mo-14Al alloy remained almost intact. Transmission electron microscopy observations revealed that the isothermal ω-phase (ωiso) was successfully suppressed in the Ti-4.5Mo-14Al alloy, while the ωiso phase grew in Ti-6Mo-7Al alloy. Moreover, the isothermal α″-phase coexisted in the Ti-4.5Mo-14Al alloy. It is concluded that a high Al concentration is a crucial prerequisite in the practical β-Ti HTSMAs. The presented design could be a useful guideline for developing Ti SMAs with comparable Mo- and Al-equivalents.

DOI： 10.3390/micro2010007

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Publishing type：Research paper (scientific journal)   Publisher：MDPI AG  

The achievement of room-temperature (RT) superelasticity in a Ti-Mo-Al ternary alloy system through the addition of a relatively high concentration of Al to manipulate the phase stability of the ω phase is realized in this study. The composition of the Ti-6 mol% Mo (Ti-11.34 mass% Mo) alloy was designated as the starting alloy, while 5 mol% Al (=2.71 mass% Al) and 10 mol% Al (=5.54 mass% Al) were introduced to promote their superelastic behavior. Among the alloys, Ti-6 mol% Mo-10 mol% Al alloy, which was investigated for the very first time in this work, performed the best in terms of superelasticity. On the other hand, Ti-6 mol% Mo and Ti-6 mol% Mo-5 mol% Al alloys exhibited a shape memory effect upon heating. It is worth mentioning that in the transmission electron microscopy observation, ω phase, which appeared along with β-parent phase, was significantly suppressed as Al concentration was elevated up to 10 mol%. Therefore, the conventional difficulties of the inhibited RT superelasticity were successfully revealed by regulating the number density of the ω phase below a threshold.

DOI： 10.3390/ma15030861

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.scriptamat.2021.114265

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.intermet.2021.107349

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jallcom.2021.163134

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jmbbm.2021.104707

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Publishing type：Research paper (scientific journal)   Publisher：MDPI AG  

Owing to the world population aging, biomedical materials, such as shape memory alloys (SMAs) have attracted much attention. The biocompatible Ti–Au–Ta SMAs, which also possess high X–ray contrast for the applications like guidewire utilized in surgery, were studied in this work. The alloys were successfully prepared by physical metallurgy techniques and the phase constituents, microstructures, chemical compositions, shape memory effect (SME), and superelasticity (SE) of the Ti–Au–Ta SMAs were also examined. The functionalities, such as SME, were revealed by the introduction of the third element Ta; in addition, obvious improvements of the alloy performances of the ternary Ti–Au–Ta alloys were confirmed while compared with that of the binary Ti–Au alloy. The Ti3Au intermetallic compound was both found crystallographically and metallographically in the Ti–4 at.% Au–30 at.% Ta alloy. The strength of the alloy was promoted by the precipitates of the Ti3Au intermetallic compound. The effects of the Ti3Au precipitates on the mechanical properties, SME, and SE were also investigated in this work. Slight shape recovery was found in the Ti–4 at.% Au–20 at.% Ta alloy during unloading of an externally applied stress.

DOI： 10.3390/ma14195810

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Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jallcom.2021.160088

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.matchemphys.2021.124775

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.msea.2021.141668

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jallcom.2021.159237

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Publishing type：Research paper (scientific journal)   Publisher：MDPI AG  

To enhance the mechanical properties (e.g., strength and elongation) of the face-centered cubic (fcc) α-phase in the Au-Cu-Al system, this study focused on the introduction of the martensite phase (doubled B19 (DB19) crystal structure of Au2CuAl) via the manipulation of alloy compositions. Fundamental evaluations, such as microstructure observations, phase identifications, thermal analysis, tensile behavior examinations, and reflectance analysis, have been conducted. The presence of fcc annealing twins was observed in both the optical microscope (OM) and the scanning electron microscope (SEM) images. Both strength and elongation of the alloys were greatly promoted while the DB19 martensite phase was introduced into the alloys. Amongst all the prepared specimens, the 47Au41Cu12Al and the 44Au44Cu12Al alloys performed the optimized mechanical properties. The enhancement of strength and ductility in these two alloys was achieved while the stress plateau was observed during the tensile deformation. A plot of the ultimate tensile strength (UTS) against fracture strain was constructed to illustrate the effects of the introduction of the DB19 martensite phase on the mechanical properties of the alloys. Regardless of the manipulation of the alloy compositions and the introduction of the DB19 martensite phase, the reflectance stayed almost identical to pure Au.

DOI： 10.3390/ma14113122

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.intermet.2021.107180

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jallcom.2021.159037

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.matlet.2021.129427

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Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.matlet.2021.129427

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.matlet.2021.129427

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Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

DOI： 10.1016/j.jallcom.2020.157599

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Publishing type：Research paper (scientific journal)   Publisher：AIP Publishing  

DOI： 10.1063/5.0036304

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Publishing type：Research paper (scientific journal)   Publisher：EDP Sciences  

Texture formation in Ti-7Mo-8Al-6Zr cold-groove-rolled alloy wires was investigated and compared to that of Ti-5.5Mo-8Al-6Zr. Irregularly textured <001>-fiber was formed in Ti-5.5Mo-8Al-6Zr. The Ti-7Mo-8Al-6Zr cold-groove-rolled wire mainly composed of the β phase though α″ martensite was induced by cold-groove-rolling in the Ti-5.5Mo-8Al-6Zr alloy. From the TEM observations of the severely deformed cold-rolled sheet, α″ martensite was assumed to be induced during cold-groove-rolling and trace α″ was assumed to be retained after cold-groove-rolling. This texture is common in bcc metals and corresponds to the <010>_α″ -fiber which is formed in the Ti-5.5Mo-8Al-6Zr alloy when the lattice correspondence between β and α″ is considered. On the other hand, the <001>-fiber was strongly developed in the cold-groove-rolled wire with a reduced cross sectional area of 98% following solution treatment, while this texture was not observed in the specimen with a 60% reduced cross sectional area. The texture formed in solution-treated Ti-7Mo-8Al-6Zr alloy wire was similar to that of the Ti-5.5Mo-8Al-6Zr alloy, although the dominant phase in the cold-groove-rolled specimen differed.

DOI： 10.1051/matecconf/202032111019

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.3390/ma13010110

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Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：日本チタン協会  

CiNii Books

J-GLOBAL

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Publishing type：Research paper (international conference proceedings)  

DOI： 10.1109/ICSENS.2017.8233941

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1038/s41598-017-15877-6

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.msea.2017.07.097

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Language：Japanese   Publisher：The Japan Society of Applied Physics  

DOI： 10.11470/jsapmeeting.2017.1.0_2956

CiNii Research

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.jallcom.2016.10.108

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DOI： 10.1016/j.actamat.2016.11.024

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Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Trans Tech Publications  

DOI： 10.4028/www.scientific.net/AST.97.115

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DOI： 10.1557/adv.2017.244

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Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Trans Tech Publications Ltd  

DOI： 10.4028/www.scientific.net/MSF.879.256

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DOI： 10.2320/matertrans.M2015456

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Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：John Wiley & Sons, Inc.  

DOI： 10.1002/9781119296126.ch294

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Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：John Wiley & Sons, Inc.  

DOI： 10.1002/9781119296126.ch171

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DOI： 10.2320/matertrans.MB201515

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DOI： 10.1016/j.scriptamat.2015.08.033

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DOI： 10.2320/jinstmet.JB201512

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DOI： 10.2320/matertrans.MI201505

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Language：Chinese   Publishing type：Research paper (scientific journal)  

DOI： 10.2320/jinstmet.JB201511

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DOI： 10.2320/jinstmet.JB201509

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DOI： 10.2320/jinstmet.JB201516

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DOI： 10.2320/matertrans.M2014418

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Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Materials Research Society  

DOI： 10.1557/opl.2015.148

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DOI： 10.1016/j.matpr.2015.07.408

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DOI： 10.1016/j.matpr.2015.07.409

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Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Materials Research Society  

DOI： 10.1557/opl.2014.949

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DOI： 10.1016/j.matpr.2015.07.344

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DOI： 10.1016/j.matpr.2015.07.407

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Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Materials Research Society  

DOI： 10.1557/opl.2015.59

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DOI： 10.2320/matertrans.M2014439

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DOI： 10.2320/matertrans.M2014468

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DOI： 10.1051/matecconf/20153306001

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DOI： 10.1016/j.actamat.2014.07.012

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DOI： 10.7567/JJAP.53.042502

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In order to develop new β (bcc) Ti alloys, the Ti-Fe-Sn system was focused and phase constitution, microstructure, mechanical properties of Ti-5mol%Fe-6mol%Sn and Ti-6mol%Fe-3mol%Sn were clarified in addition to aging effect. It was estimated by differential scanning calorimetry (DSC) that α phase is formed at temperature from 773-779K and that β transus temperature is 1019K in both the alloys. X-ray diffraction analysis revealed that, in both alloys, β single phase is formed after the solution treatment (ST) at 1273K followed by water quenching, while α phase is formed after the aging at 773K and 873K for 3.6ks. The formation of α phase is also confirmed by optical microscopy. The volume fraction of α phase reaches to 90% in Ti-5Fe-6Sn and 80% in Ti-6Fe-3Sn after the aging at 873K for 3.6ks. The 0.2% proof stress was increased by aging at 873K from 550MPa to 650MPa in Ti-5Fe-6Sn and 500MPa to 690MPa in Ti-6Fe-3Sn. Besides, apparent Young's modulus measured by dynamic mechanical analysis was raised by the aging treatment. These changes in the mechanical properties were discussed in connection with α phase precipitation. © (2014) Trans Tech Publications, Switzerland.

DOI： 10.4028/www.scientific.net/MSF.783-786.2423

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Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Trans Tech Publications  

DOI： 10.4028/www.scientific.net/AMR.922.260

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Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Trans Tech Publications  

DOI： 10.4028/www.scientific.net/AMR.922.622

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Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Trans Tech Publications Ltd  

DOI： 10.4028/www.scientific.net/AMR.922.137

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Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Trans Tech Publications Ltd  

DOI： 10.4028/www.scientific.net/AMR.922.25

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We investigate the temperature dependence of Brillouin scattering properties in perfluorinated graded-index (PFGI-) plastic optical fibers (POFs) in a wide temperature range from -170 to 130°C. The temperature dependence of Brillouin frequency shift is found to be nonlinear at > 84°C; while it shows linear dependences even at -170°C. The Stokes power is maximal at 60 °C and is gradually reduced with decreasing or increasing temperature. Our results indicate that the Brillouin scattering in PFGI-POFs can be exploited to cryogenic-temperature sensing as well as higher-temperature sensing. © 2013 The Japan Society of Applied Physics.

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DOI： 10.1016/j.jallcom.2011.12.113

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DOI： 10.1016/j.actamat.2013.04.060

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DOI： 10.2497/jjspm.60.128

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We investigate the temperature dependences of the Brillouin scattering properties in a perfluorinated graded-index (PFGI-) plastic optical fiber (POF) in a wide temperature range from-160 to 125 °C. The temperature dependences of the Brillouin frequency shift, linewidth, and Stokes power are linear at lower temperature down to-160 °C; while they show nonlinear dependences at higher temperature. These behaviors appear to originate from the partial glass transition of the polymer material.

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Language：English   Publishing type：Research paper (international conference proceedings)  

DOI： 10.4028/www.scientific.net/MSF.738-739.262

Web of Science

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Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：The Materials Research Society of Japan  

Strain-rate sensitivity (SRS) and shape memory effect were investigated in Ti-Cr-Sn β(bcc)-Ti shape memory alloys using strain-rate dip test. There was a trade-off relation between shape recovery strain and SRS. This means that SRS becomes more significant, whereas the shape recovery strain decreases with increasing Cr content. This change in SRS is considered to be a transition of deformation mechanism from non-thermal activation process to thermal activation process with increasing stability of β phase.

DOI： 10.14723/tmrsj.38.545

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Language：English   Publishing type：Research paper (international conference proceedings)  

DOI： 10.4028/www.scientific.net/AST.78.25

Web of Science

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Language：English   Publishing type：Research paper (international conference proceedings)  

DOI： 10.1557/opl.2013.141

Scopus

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Publishing type：Research paper (international conference proceedings)  

DOI： 10.1109/ICSENS.2012.6411180

Scopus

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Language：Japanese  

DOI： 10.2464/jilm.62.257

CiNii Books

J-GLOBAL

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Language：English   Publishing type：Research paper (international conference proceedings)  

Web of Science

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.actamat.2011.06.015

Web of Science

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.msea.2010.07.052

Web of Science

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.2320/matertrans.MA200907

Web of Science

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Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：The Japan Society of Mechanical Engineers  

The effect of cyclic deformation on superelastic behavior was investigated in Ti-26Nb and Ti-23Nb-1.0N (at.%) alloys. Cyclic loading-unloading tensile tests with a constant maximum applied strain of 2.5% were carried out until the 500th cycle. With increasing number of cycles, the critical stress for inducing the martensitic transformation decreased and the residual strain increased. In the Ti-26Nb alloy, it was confirmed that the increase of the residual strain during the cyclic deformation was due primarily to the increase in the residual martensites. More stable cyclic deformation behavior was confirmed in the Ti-23Nb-1.0N alloy compared with the Ti-26Nb alloy owing to the higher critical stress for slip.

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1142/S1793604709000600

Web of Science

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Language：English   Publishing type：Research paper (scientific journal)  

DOI： 10.1016/j.actamat.2009.01.037

Web of Science

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Language：English   Publishing type：Research paper (scientific journal)  

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Language：Japanese   Publishing type：Research paper (scientific journal)  

DOI： 10.2320/jinstmet.72.955

Web of Science

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Language：English   Publishing type：Research paper (international conference proceedings)  

DOI： 10.1361/cp2007smst521

Web of Science

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Language：English   Publishing type：Research paper (international conference proceedings)  

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J-GLOBAL

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J-GLOBAL

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J-GLOBAL

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J-GLOBAL

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Language：English  

DOI： 10.1016/j.matlet.2019.126691

Web of Science

Scopus

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Language：English  

DOI： 10.1002/adem.201900416

Web of Science

Scopus

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Language：English  

DOI： 10.2320/matertrans.MB201806

Web of Science

Scopus

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Language：English  

DOI： 10.2320/matertrans.M2019039

Web of Science

Scopus

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Language：English  

DOI： 10.2320/matertrans.MB201810

Web of Science

Scopus

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J-GLOBAL

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Publisher：The Optical Society  

DOI： 10.1364/oe.26.028030

Scopus

PubMed

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Language：English  

DOI： 10.1016/j.mtla.2018.07.008

Web of Science

Scopus

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DOI： 10.1088/1361-665X/aacdbf

Scopus

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Language：English  

DOI： 10.4028/www.scientific.net/MSF.941.1463

Web of Science

Scopus

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J-GLOBAL

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J-GLOBAL

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Language：Japanese  

J-GLOBAL

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Language：Japanese  

J-GLOBAL

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Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

CiNii Books

J-GLOBAL

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J-GLOBAL

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Language：Japanese   Publisher：The Japan Society of Mechanical Engineers  

CiNii Books

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Language：Japanese  

J-GLOBAL

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Language：Japanese  

J-GLOBAL

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Event date： 2026.3

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