Low Temperature Deformation Detwinning-A Reverse Mode of Twinning

被引：25

作者：

Wang, Yan-Dong ^{[1
]}

Liu, Wenjun ^{[2
]}

Lu, Lei ^{[3
]}

Ren, Yang ^{[2
]}

Nie, Zhi-Hua ^{[1
]}

Almer, Jonathan ^{[2
]}

Cheng, Sheng ^{[4
]}

Shen, Yong-Feng ^{[5
]}

Zuo, Liang ^{[5
]}

Liaw, Peter K. ^{[4
]}

Lu, Ke ^{[3
]}

机构：

[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

[2] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

[3] Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China

[4] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[5] Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110004, Peoples R China

来源：

ADVANCED ENGINEERING MATERIALS | 2010年 / 12卷 / 09期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

NANOCRYSTALLINE METALS; ULTRAHIGH-STRENGTH; GRAIN-BOUNDARIES; RATE SENSITIVITY; COPPER; DISLOCATION; PLASTICITY; MICROSCOPY; MAXIMUM; GROWTH;

D O I：

10.1002/adem.201000123

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The origin of the plasticity in bulk nanocrystalline metals have, to date, been attributed to the grain-boundary-mediated process, stress-induced grain coalescence, dislocation plasticity, and/or twinning. Here we report a different mechanism-detwinning, which operates at low temperatures during the tensile deformation of an electrodeposited Cu with a high density of nanosized growth twins. Both three-dimensional XRD microscopy using the Laue method with a submicron-sized polychromatic beam and high-energy XRD technique with a monochromatic beam provide the direct experimental evidences for low temperature detwinning of nanoscale twins.

引用

页码：906 / 911

页数：6

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