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Indexed by:期刊论文

Date of Publication:2013-08-01

Journal:SCRIPTA MATERIALIA

Included Journals:SCIE、EI、Scopus

Volume:69

Issue:3

Page Number:231-234

ISSN No.:1359-6462

Key Words:Ultrahigh hardness; Ductility; Nanotwins; Nanoindentation; HgCdTe

Abstract: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.