期刊
MATERIALS LETTERS
卷 65, 期 3, 页码 464-466出版社
ELSEVIER
DOI: 10.1016/j.matlet.2010.10.026
关键词
Shape memory materials; Phase transformation; Rate-dependent indentation depth
资金
- Hong Kong Research Grants Council [620109]
We examined the effect of loading rate on maximum nanoindentation depth for nano-grained superelastic NiTi shape memory alloy during stress-induced phase transformation. The depth decreases significantly with increasing loading rate. It is argued that the observed rate dependency is attributed to the release and transfer of latent heat during indentation and the temperature dependence of the material's transition stress. Dimensional analysis further shows that the depth is mainly governed by the normalized average stress in the phase transition zone and the ratio of heat conduction time over loading time. Experimental results support the rationale. (C) 2010 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据