Hits:

Indexed by:期刊论文

Date of Publication:2013-09-01

Journal:SCRIPTA MATERIALIA

Included Journals:SCIE、EI、Scopus

Volume:69

Issue:6

Page Number:457-460

ISSN No.:1359-6462

Key Words:Molecular dynamics; Nanotwinned structure; CdTe; Nanoindentation; Edge dislocation

Abstract: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.