Effect of pre-deformation on microstructures and mechanical properties of high purity Al-Cu-Mg alloy

被引：42

作者：

Li, Hui-zhong ^{[1
,2
,3
]}

Liu, Ruo-mei ^{[1
]}

Liang, Xiao-peng ^{[1
,2
]}

Deng, Min ^{[1
]}

Liao, Hui-juan ^{[1
]}

Huang, Lan ^{[2
]}

机构：

[1] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

[2] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

[3] Cent S Univ, Minist Educ, Key Lab Nonferrous Met Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2016年 / 26卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Al-Cu-Mg alloy; pre-deformation; age strengthening; precipitation; microstructure; mechanical properties; ALUMINUM-ALLOY; THERMOMECHANICAL TREATMENT; COLD WORK; PRECIPITATION; COMPOSITES; DUCTILITY; STRENGTH; PHASE;

D O I：

10.1016/S1003-6326(16)64253-X

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The effects of pre-deformation following solution treatment on the microstructure and mechanical properties of aged high purity Al-Cu-Mg alloy were studied by tensile test, micro-hardness measurements, transmission electron microscopy and scanning electron microscopy. The micro-hardness measurements indicate that compared with un-deformed samples, the peak hardness is increased and the time to reach peak hardness is reduced with increasing pre-strain. Additionally, a double-peak hardness evolution behavior of cold-rolled (CR) samples was observed during aging. The results of TEM observation show that the number density of S'(Al2CuMg) phase is increased and the size is decreased in CR alloy with increase of pre-strain. The peak hardness and peak strength of the CR alloy are increased because of quantity increasing and refinement of S' phase and high density dislocation.

引用

页码：1482 / 1490

页数：9

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