Martensitic Transformation and Superelasticity of Ti-Nb-Pt Alloys
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- Kim Hee Young
- Institute of Materials Science, University of Tsukuba
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- Oshika Naomi
- Institute of Materials Science, University of Tsukuba
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- Kim Jae Il
- Department of Materials Science, Dong-A University
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- Inamura Tomonari
- Precision and Intelligence Laboratory, Tokyo Institute of Technology
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- Hosoda Hideki
- Precision and Intelligence Laboratory, Tokyo Institute of Technology
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- Miyazaki Shuichi
- Institute of Materials Science, University of Tsukuba
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Abstract
Shape memory properties and martensitic transformation of Ti-Nb-Pt alloys were investigated in order to develop Ni-free biomedical superelastic alloys. The effect of Pt addition on the transformation strain was investigated by measuring the lattice constants of the parent and martensite phases of Ti-Nb-Pt alloys. The Ti-Nb-Pt alloys were fabricated by arc melting. The ingots were cold-rolled up to 99% reduction in thickness. The cold-rolled specimens were heat treated at 873 K for 0.6 ks. The shape memory effect and/or superelastic behavior were observed in the Ti-Nb-Pt alloys. The martensitic transformation temperature decreases by about 160 K with a 1 at% increase of Pt in the Ti-Nb-Pt alloys. The addition of Pt as a substitute of Nb was effective to increase the transformation strain when compared with compositions which reveal similar transformation temperatures. An aging treatment at 573 K was effective for increasing the stress for inducing the martensitic transformation and the critical stress for plastic deformation, resulting in good superelasticity.
Journal
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 48 (3), 400-406, 2007
The Japan Institute of Metals and Materials
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Details 詳細情報について
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- CRID
- 1390282679228029056
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- NII Article ID
- 130004453478
- 10018734623
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- NII Book ID
- AA1151294X
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- COI
- 1:CAS:528:DC%2BD2sXksVOjtrY%3D
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- ISSN
- 13475320
- 13459678
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- NDL BIB ID
- 8670897
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed