Precipitation Behavior of Thermo-Mechanically Treated Ti50Ni20Au20Cu10 High-Temperature Shape-Memory Alloy
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- 作者：Saif Haider Kayani ; M. Imran Khan ; Fazal Ahmad Khalid…
- 关键词：High ; temperature shape ; memory alloy ; TiNiAu ; Cold deformation ; Precipitation hardening
- 刊名：Shape Memory and Superelasticity
- 出版年：2016
- 出版时间：March 2016
- 年：2016
- 卷：2
- 期：1
- 页码：29-36
- 全文大小：1,793 KB
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M. Imran Khan (1)
Fazal Ahmad Khalid (1) (2)
Hee Young Kim (4)
Shuichi Miyazaki (4) (5)
1. Ghulam Ishaq Khan (GIK) Institute of Engineering Sciences and Technology, Topi, District Swabi, Khyber Pakhtunkhwa, 23640, Pakistan
3. Korea Institute of Materials Science, 797 Changwondaero, Seongsangu, Changwon, Gyeongnam, 642-831, Republic of Korea
2. University of Engineering and Technology, Lahore, Pakistan
4. Division of Materials Science, University of Tsukuba, Tsukuba, Ibaraki, 305-8573, Japan
5. Foundation for Advancement of International Science, 3-24-16 Kasuga, Tsukuba, Ibaraki, 305-0821, Japan - 刊物类别：Characterization and Evaluation of Materials;
- 刊物主题：Characterization and Evaluation of Materials;
- 出版者：Springer International Publishing
- ISSN：2199-3858
文摘
In the present work, precipitation behavior of TiNiAuCu-based high-temperature shape-memory alloys is studied. Two alloys with compositions Ti50Ni30Au20 and Ti50Ni20Au20Cu10 were prepared. After 30 % cold rolling, both alloys were then annealed at different temperatures. Formation of Cu-rich TiAuCu and Ti-rich Ti3Au precipitates was observed in Ti50Ni20Au20Cu10 alloy when annealed at different temperatures after cold deformation. It was noticed that prior cold deformation has significant effect on the precipitation behavior. A similar kind of precipitation behavior has been previously reported in TiNiPdCu alloys. Both TiAuCu and Ti3Au type precipitates were found to be deficient in Ni content which causes an increase in Ni content of the matrix and a small decrease in transformation temperatures of the Ti50Ni20Au20Cu10 alloy.