Natural aging of dissimilar high-strength AA2024/AA7075 joints arc welded with nano-treated filler

被引：5

作者：

Murali, Narayanan ^{[1
]}

Chi, Yitian ^{[2
]}

Li, Xiaochun ^{[1
,2
]}

机构：

[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

[2] Univ Calif Los Angeles, Dept Mech & Aerosp Engn, Los Angeles, CA 90095 USA

来源：

MATERIALS LETTERS | 2022年 / 322卷

关键词：

Welding; Nanocomposite; Aluminum alloys; Microhardness; Microstructure; WETTING TRANSITION; AL; MG;

D O I：

10.1016/j.matlet.2022.132479

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fusion welding dissimilar combinations of high-strength aluminum alloys is desirable for industries but complicated in its implementation. Solidification defects and difficulties in heat treating dissimilar joints often make the operation impractical. Here, nano-treatment with TiC in the arc welding process allows successful joining of AA2024 and AA7075 while promoting a significant natural aging response in the joint. The dissimilar joints regain between 30 and 40 HV in the weld metal over a period of 10 weeks while remaining free of major defects. Nano-treatment shows great potential in enabling significant metallurgical capabilities in high-strength aluminum alloy systems.

引用

页数：5

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