Ultrahigh hardness and synergistic mechanism of a nanotwinned structure of cadmium zinc telluride

被引：22
作者：
Zhang, Zhenyu [1 ]
Huo, Yanxia [1 ]
Huo, Fengwei [1 ]
Zhang, Xianzhong [1 ]
Zhang, Liang [1 ]
Guo, Dongming [1 ]
机构：
[1] Dalian Univ Technol, Minist Educ, Key Lab Precis & Nontradit Machining Technol, Dalian 116024, Peoples R China
来源：
SCRIPTA MATERIALIA | 2013年 / 68卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Nanotwins; Ultrahigh hardness; Ductility; Nanoindentation; CdZnTe; CENTERED-CUBIC METALS; NANOCRYSTALLINE COPPER; MAXIMUM STRENGTH; GRAIN-BOUNDARIES; PLASTICITY; NANOINDENTATION; BEHAVIOR; TWINS;
D O I：
10.1016/j.scriptamat.2013.01.004
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Nanotwinned (nt) cadmium zinc telluride (CdZnTe or CZT) was fabricated using nanoindentation at room temperature. The nt-CZT exhibits a high hardness of up to 80.7 GPa, which is two orders of magnitude higher than that of its monocrystalline counterparts. The ultrahigh hardness of nt-CZT originates from the synergistic mechanism of a repeated nt pattern, where a lamellar twin with thickness >12.7 nm is followed by one or several twins with thicknesses <12.7 urn. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：747 / 750
页数：4
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