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.
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页数：5
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