Enhancing tensile properties of Cu and Cu-Al alloys cryogenically processed by high pressure torsion

被引：7
|
作者：
Wei, Kun Xia [1 ,3 ,4 ]
Horky, J. [2 ]
Wei, Wei [1 ,3 ,4 ]
Zehetbauer, M. J. [2 ]
Setman, D. [2 ]
Schafler, E. [2 ]
Hu, Jing [1 ,3 ,4 ]
机构：
[1] Changzhou Univ, Sch Mat Sci & Engn, 1 Gehu Rd, Changzhou 213164, Peoples R China
[2] Univ Vienna, Fac Phys, Grp Phys Nanostruct Mat, Boltzmanng 5, A-1090 Vienna, Austria
[3] Changzhou Univ, Jiangsu Key Lab Mat Surface Sci & Technol, Changzhou 213164, Peoples R China
[4] Changzhou Univ, Joint Lab Funct Nanostruct Mat, Changzhou 213164, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 771卷
基金：
中国国家自然科学基金;
关键词：
Tensile properties; High pressure torsion; Stacking fault energy; Cryogenic deformation; Cu-Al alloys; STACKING-FAULT ENERGY; SEVERE PLASTIC-DEFORMATION; MECHANICAL-PROPERTIES; MICROSTRUCTURAL EVOLUTION; STRAIN-RATE; GRAIN-SIZE; ZN ALLOYS; STRENGTH; COPPER; BEHAVIOR;
D O I：
10.1016/j.jallcom.2018.08.247
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The influence of alloy concentration with different stacking fault energy (SFE) on tensile properties of Cu and Cu-Al alloys processed by high pressure torsion (HPT) at room temperature (RT) and liquid nitrogen temperature (LNT) was investigated. With decreasing SFE, the twinning capability, the dislocation density and grain refinement were enhanced at LNT, however, tensile strength and uniform elongation were not simultaneously improved. The enhanced tensile properties are explained in terms of the twinning capability, the grain size and the dislocation density independent of the short range order (SRO). (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：317 / 321
页数：5
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