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Article

Evaluation of the Shape Memory Effect by Micro-Compression Testing of Single Crystalline Ti-27Nb Ni-Free Alloy

1
National Institute of Advanced Industrial Science and Technology, 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan
2
Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan
3
CREST, Japan Science and Technology Agency, Yokohama 226-8503, Japan
*
Author to whom correspondence should be addressed.
Materials 2020, 13(1), 110; https://doi.org/10.3390/ma13010110
Received: 26 November 2019 / Revised: 23 December 2019 / Accepted: 24 December 2019 / Published: 25 December 2019
(This article belongs to the Special Issue Ti-Based Biomaterials: Synthesis, Properties and Applications)
In this work, micro-compression tests are performed at various temperatures with Ti-27Nb (at.%) single crystalline pillars to investigate anisotropic deformation behavior, including the shape memory effect. In non-tapered single-crystal pillars with loading directions parallel to [001], [011], and [111], transformation strain and stress show orientation dependence. [001]-oriented micropillars with aspect ratios of 2 and 1.5 demonstrate temperature-dependent transformation stress during micro-compression at various temperatures. Although more stress is required to induce martensite transformation in the pillar with the lower aspect ratio, the temperature dependence of ~1.8 MPa/K observed in both pillars is in good agreement with that of bulk Ti-27Nb. View Full-Text
Keywords: shape memory alloy; temperature variable micro-compression test; single crystal; biomedical alloy shape memory alloy; temperature variable micro-compression test; single crystal; biomedical alloy
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MDPI and ACS Style

Nagoshi, T.; Yasuda, T.; Otaki, N.; Tahara, M.; Hosoda, H.; Sone, M. Evaluation of the Shape Memory Effect by Micro-Compression Testing of Single Crystalline Ti-27Nb Ni-Free Alloy. Materials 2020, 13, 110. https://doi.org/10.3390/ma13010110

AMA Style

Nagoshi T, Yasuda T, Otaki N, Tahara M, Hosoda H, Sone M. Evaluation of the Shape Memory Effect by Micro-Compression Testing of Single Crystalline Ti-27Nb Ni-Free Alloy. Materials. 2020; 13(1):110. https://doi.org/10.3390/ma13010110

Chicago/Turabian Style

Nagoshi, Takashi, Takahisa Yasuda, Nao Otaki, Masaki Tahara, Hideki Hosoda, and Masato Sone. 2020. "Evaluation of the Shape Memory Effect by Micro-Compression Testing of Single Crystalline Ti-27Nb Ni-Free Alloy" Materials 13, no. 1: 110. https://doi.org/10.3390/ma13010110

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