Mechanical Properties and Shape Memory Behavior of Ti-Nb Alloys
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- Kim Hee Young
- Institute of Materials Science, University of Tsukuba
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- Hashimoto Satoru
- Institute of Materials Science, University of Tsukuba
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- Kim Jae Il
- Institute of Materials Science, University of Tsukuba
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- Hosoda Hideki
- Precision and Intelligent Laboratory, Tokyo Institute of Technology
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- Miyazaki Shuichi
- Institute of Materials Science, University of Tsukuba
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Mechanical properties and shape memory behavior of Ti-(20—29)at%Nb alloys were investigated in order to develop Ni-free biomedical shape memory alloys. The Ti-Nb alloys were fabricated by arc melting method. The ingots were cold-rolled with a reduction up to 95% in thickness and then solution treated at 1173 K for 1.8 ks. The martensitic transformation temperature decreased by 43 K per 1 at% increase of Nb content. The shape memory effect and superelastic behavior were observed at room temperature in the Ti-(22—25)at%Nb alloys and Ti-(25.5—27)at%Nb alloys, respectively. A small enthalpy of the martensitic transformation and a large difference between Ms and Mf were observed in the Ti-Nb alloys compared to Ti-Ni shape memory alloys. The maximum recovered strain of 3% was obtained at room temperature in solution treated Ti-(25−27)at%Nb alloys. The heat treatment at 573 K for 3.6 ks stabilized superelastic behavior of Ti-Nb alloys by increasing the critical stress for slip.
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 45 (7), 2443-2448, 2004
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390282679228506624
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- NII論文ID
- 10013337877
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- NII書誌ID
- AA1151294X
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- COI
- 1:CAS:528:DC%2BD2cXmvFejtb0%3D
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- ISSN
- 13475320
- 13459678
- http://id.crossref.org/issn/09161821
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- NDL書誌ID
- 7016280
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可