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

被引：55
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.
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页数：5
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