In situ nanomechanical testing of twinned metals in a transmission electron microscope

被引：16

作者：

Li, Nan ^{[1
]}

Wang, Jiangwei ^{[2
]}

Mao, Scott ^{[3
]}

Wang, Haiyan ^{[4
]}

机构：

[1] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA

[2] Zhejiang Univ, Sch Mat Sci & Engn, Ctr Electron Microscopy, Hangzhou, Zhejiang, Peoples R China

[3] Univ Pittsburgh, Dept Mech Engn & Mat Sci, Pittsburgh, PA 15260 USA

[4] Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA

来源：

MRS BULLETIN | 2016年 / 41卷 / 04期

基金：

美国国家科学基金会;

关键词：

STRAIN-RATE SENSITIVITY; GRAIN-BOUNDARY; DISLOCATION NUCLEATION; LATTICE DISLOCATIONS; ULTRAHIGH STRENGTH; MAXIMUM STRENGTH; GROWTH TWINS; HIGH-DENSITY; DEFORMATION; TEM;

D O I：

10.1557/mrs.2016.66

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This article focuses on in situ transmission electron microscope (TEM) characterization to explore twins in face-centered-cubic and body-centered-cubic monolithic metals, and their impact on the overall mechanical performance. Taking advantage of simultaneous nanomechanical deformation and nanoscale imaging using versatile in situ TEM tools, direct correlation of these unique microscopic defects with macroscopic mechanical performance becomes possible. This article summarizes recent evidence to support the mechanisms related to strengthening and plasticity in metals, including nanotwinned Cu, Ni, Al, Au, and others in bulk, thin film, and nanowire forms.

引用

页码：305 / 313

页数：9

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