Temperature and strain rate effect of the deformation-induced phase transformation in pure titanium nanopillars oriented along [0 0 0 1]
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- 作者：Junqiang Rena ; b ; c ; Qiaoyan Sunc ; Lin Xiaoc ; lxiao@mail.xjtu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Jun Sunc
- 关键词：Molecular dynamics simulation ; Titanium ; Phase transformations ; Twinning ; Dislocations
- 刊名：Computational Materials Science
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：126
- 期：Complete
- 页码：66-73
- 全文大小：4706 K
文摘
- •
The phase transformation dependence on temperature and strain rate in Ti was studied.
- •
md5=4efbb09abb0c39052eb0eae376568fc2">
twinning is the primary deformation mode at the first yield.- •
The fcc-Ti phase is formed inside the twinning region at K ⩾ 380 K or md5=7d5910ea9a6cf352e7206366e0d72b36">
⩾ 108 s−1.- •
The twin nucleation rate increases with the deformation temperature and strain rate.
- •
The deformation mechanism has changed at the higher strain rate (md5=7d5910ea9a6cf352e7206366e0d72b36">
⩾ 109 s−1).