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论文类型：期刊论文

发表时间：2013-08-01

发表刊物：SCRIPTA MATERIALIA

收录刊物：SCIE、EI、Scopus

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.