Anneal hardening of a nanostructured Cu-Al alloy processed by high-pressure torsion and rolling

被引：29

作者：

Tao, Jingmei ^{[1
]}

Chen, Guangming ^{[2
]}

Jian, Weiwei ^{[2
]}

Wang, Jun ^{[2
]}

Zhu, Yuntian ^{[2
,3
]}

Zhu, Xinkun ^{[1
]}

Langdon, Terence G. ^{[4
,5
,6
]}

机构：

[1] Kunming Univ Sci & Technol, Fac Mat Sci & Engn, Kunming 650093, Yunnan, Peoples R China

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

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

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

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

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

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2015年 / 628卷

基金：

美国国家科学基金会; 欧洲研究理事会;

关键词：

Annealing twins; Cu-Al alloy; High-pressure torsion (HPT); Nanostructured (NS) materials; Recrystallization; SEVERE PLASTIC-DEFORMATION; THERMAL-STABILITY; NANOCRYSTALLINE ALUMINUM; SHEARING PATTERNS; GRAIN-BOUNDARIES; TWIN BOUNDARIES; METALS; COPPER; NANOSCALE; DUCTILITY;

D O I：

10.1016/j.msea.2015.01.055

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A Cu-7 wt% Al alloy was processed by high-pressure torsion and rolling to obtain nanostructure and then annealed at a series of different temperatures. Annealing at 250 degrees C for 120 min produced higher strength, which is attributed to the formation of nanoscale annealing twins. It is proposed that the high densities of stacking faults and nonequilibrium grain boundaries, combined with the high residual shear stresses in the deformed samples, contribute to the development of nanoscale annealing twins during the recrystallization process. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：207 / 215

页数：9

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