Effect of Pre-deformation on the Precipitation Behavior and Mechanical Property of Al-Cu-Li-Mn-Zr Alloy

被引：0

作者：

Deng Y. ^{[1
]}

Huang G. ^{[1
]}

Cao L. ^{[1
]}

Wu X. ^{[1
]}

Huang L. ^{[1
]}

机构：

[1] College of Materials Science and Engineering, Chongqing University, Chongqing

来源：

Cailiao Daobao/Materials Review | 2018年 / 32卷 / 02期

关键词：

Al-Cu-Li-Mn-Zr alloy; Pre-deformation; Precipitation strengthening; T[!sub]1[!/sub] precipitate;

D O I：

10.11896/j.issn.1005-023X.2018.004.012

中图分类号：

学科分类号：

摘要：

The effect of pre-deformation on the precipitation behavior and mechanical property of Al-Cu-Li-Mn-Zr alloy were investigated by Vickers hardness measurement, room-temperature tensile test and transmission electron microscopy (TEM) characterization. The results showed that in the peak aged Al-Cu-Li-Mn-Zr alloy without pre-deformation, the T1 and θ' phases were usually dominant, while the amount of χ phase was very limited. When this alloy was subjected to the pre-deformation prior to aging, the formation of T1 was promoted, and the nucleation of θ' was inhibited, while there was little influence on the formation of χ phase. Therefore, the T1 phase was primary precipitate in the aged alloy with pre-strain. With the increase of pre-strain, although the diameter of the T1 precipitates became smaller, the thickness and volume fraction of them kept almost the same. In addition, when larger pre-strain was applied, the alloy showed higher strength and lower plasticity. © 2018, Materials Review Magazine. All right reserved.

引用

页码：569 / 573

页数：4

共 18 条

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