Effect of pre-deformation on the microstructures and properties of 2219 aluminum alloy during aging treatment

被引：54

作者：

Lu, Yalin ^{[1
,2
]}

Wang, Jian ^{[2
]}

Li, Xingcheng ^{[1
]}

Chen, Yi ^{[1
]}

Zhou, Dongshuai ^{[1
,2
]}

Zhou, Gang ^{[2
]}

Xu, Wenting ^{[2
]}

机构：

[1] Key Construct Lab Green Forming & Equipment Jiang, Changzhou, Peoples R China

[2] Jiangsu Univ Technol, Sch Mat Engn, Changzhou, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 699卷

基金：

中国国家自然科学基金;

关键词：

2219 aluminum alloy; Pre-deformation; Microstructures; Mechanical properties;

D O I：

10.1016/j.jallcom.2016.12.006

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 changing of the microstructure and properties with the pre-deformation degree of the 2219 aluminum alloys during aging treatment was investigated. The results reveal that the pre-deformation leads to the increasing of the dislocation density in the matrix that in turn gives rise to the formation of the dense and smaller precipitated theta' phases with dispersive distribution in the a-matrix, which results in the enhancing of the strength of the pre-deformed samples. It is also observed that the strength of the 4.19% pre-deformed sample shows an abrupt slightly decline by comparing with the 2.88% pre-deformed sample, which caused by the formation of the non-uniformly distributed theta' precipitates due to the large amount of the dislocation cells formed by the pre-deformation in the matrix. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：1140 / 1145

页数：6