论文类型：期刊论文
发表刊物：SCRIPTA MATERIALIA
收录刊物：Scopus、EI、SCIE
卷号：69
期号：3
页面范围：231-234
ISSN号：1359-6462
关键字：Ultrahigh hardness; Ductility; Nanotwins; Nanoindentation; HgCdTe
摘要：Unidirectionally coherent and boundary-free nanotwinned (nt) mercury cadmium telluride (HgCdTe or MCT) was achieved under plastic deformation of nanoindentation. The hardness of nt-MCT is up to 47.2 GPa, which is two orders magnitude higher than that of monocrystalline MCT. This increased hardness originates from the unique composite nt structure, which exhibits a repeated pattern comprising a lamellar twin >11.5 nm thick, followed by one or several lamellar twins with thicknesses <11.5 nm. (c) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.