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个人信息Personal Information
教授
博士生导师
硕士生导师
性别：男
毕业院校：天津大学
学位：博士
所在单位：机械工程学院
学科：机械制造及其自动化. 机械设计及理论
办公地点：机械工程学院知方楼5055
联系方式：zzy@dlut.edu.cn
电子邮箱：zzy@dlut.edu.cn
Hardening mechanism of twin boundaries during nanoindentation of soft-brittle CdTe crystals
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论文类型：期刊论文
发表时间：2013-09-01
发表刊物：SCRIPTA MATERIALIA
收录刊物：SCIE、EI、Scopus
卷号：69
期号：6
页面范围：457-460
ISSN号：1359-6462
关键字：Molecular dynamics; Nanotwinned structure; CdTe; Nanoindentation; Edge dislocation
摘要：Deformations of cadmium telluride (CdTe) under nanoindentation were simulated by molecular dynamics. CdTe slides along the {1 1 1} planes under nanoindentation through edge dislocations. During loading, the sliding of CdTe was limited at twin boundaries, inducing the pile-up phenomenon. When dislocations transferred across the twin boundary, a sessile dislocation and steps formed. The coherence effect of both twin boundaries locked the dislocations at the twin boundary effectively, indicating a better hardening effect. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.