Atomic-scale investigation of interface-facilitated deformation twinning in severely deformed Ag-Cu nanolamellar composites

被引：59

作者：

An, X. H. ^{[1
]}

Zhu, S. M. ^{[2
]}

Cao, Y. ^{[1
]}

Kawasaki, M. ^{[3
]}

Liao, X. Z. ^{[1
]}

Ringer, S. P. ^{[1
,4
]}

Nie, J. F. ^{[2
]}

Langdon, T. G. ^{[5
,6
,7
]}

Zhu, Y. T. ^{[8
,9
]}

机构：

[1] Univ Sydney, Sch Aerosp Mech & Mechatron Engn, Sydney, NSW 2006, Australia

[2] Monash Univ, Dept Mat Engn, Melbourne, Vic 3800, Australia

[3] Hanyang Univ, Div Mat Sci & Engn, Seoul 133791, South Korea

[4] Univ Sydney, Australian Ctr Microscopy & Microanal, Sydney, NSW 2006, Australia

[5] Univ So Calif, Dept Aerosp & Mech Engn, Los Angeles, CA 90089 USA

[6] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA

[7] Univ Southampton, Fac Engn & Environm, Mat Res Grp, Southampton SO17 1BJ, Hants, England

[8] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27695 USA

[9] Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing, Jiangsu, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2015年 / 107卷 / 01期

基金：

美国国家科学基金会; 澳大利亚研究理事会; 欧洲研究理事会;

关键词：

HIGH-PRESSURE TORSION; CENTERED-CUBIC METALS; NANOLAYERED COMPOSITES; NANOCRYSTALLINE CU; GROWTH TWINS; MECHANISMS; SLIP; EVOLUTION; ALLOYS;

D O I：

10.1063/1.4926370

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report an atomic-scale investigation of interface-facilitated deformation twinning behaviour in Ag-Cu nanolamellar composites. Profuse twinning activities in Ag supply partial dislocations to directly transmit across the Ag-Cu lamellar interface that promotes deformation twinning in the neighbouring Cu lamellae although the interface is severely deformed. The trans-interface twin bands change the local structure at the interface. Our analysis suggests that the orientation relationship and interfacial structure between neighbouring Ag-Cu lamellae play a crucial role in such special interface-facilitated twinning behaviour. (C) 2015 AIP Publishing LLC.

引用

页数：5

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