Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2013-08-01

Journal: SCRIPTA MATERIALIA

Included Journals: Scopus、EI、SCIE

Volume: 69

Issue: 3

Page Number: 231-234

ISSN: 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.