Effect of Aging on Microstructure and Martensitic Transformation in Ti-Zr-Ni Shape Memory Alloys |
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| Journal | Materials Science Forum (Volumes 539 - 543) |
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| Volume | THERMEC 2006 |
| Edited by | T. Chandra, K. Tsuzaki, M. Militzer , C. Ravindran |
| Pages | 3163-3168 |
| DOI | 10.4028/www.scientific.net/MSF.539-543.3163 |
| Citation | Adrian Sandu et al., 2007, Materials Science Forum, 539-543, 3163 |
| Online since | March, 2007 |
| Authors | Adrian Sandu, Koichi Tsuchiya, Shinya Yamamoto, Masayuki Tabuchi, Yoshikazu Todaka, Minoru Umemoto |
| Keywords | Aging, Martensitic Transformation (MT), Precipitation, Shape Memory Alloy Actuator, Short Range Order (SRO) |
| Abstract | Effect of isothermal aging on martensitic transformation temperatures, mechanical properties and microstructure was investigated for a Ni-rich Ti-Zr-Ni shape memory alloy at temperatures ranging from 673 K to 773 K. The aging behaviour was two stage process: the first stage associated with an increase in the Vickers hardness and a decrease in martensitic transformation temperatures and the second stage with a decrease in the hardness and increase in the transformation temperatures. Second stage was also characterized by the appearance of nano-scale precipitates, which has never been reported. |
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