Reducing welding hot cracking of high-strength novel Al-Mg-Zn-Cu alloys based on the prediction of the T-shaped device

被引：22

作者：

Pan, Yanlin ^{[1
,2
]}

Zhang, Di ^{[1
,2
]}

Liu, Haoran ^{[1
,2
]}

Zhang, Zhaorui ^{[1
,2
]}

Li, Hongxiang ^{[1
,2
]}

Zhuang, Linzhong ^{[1
,2
]}

Zhang, Jishan ^{[1
,2
]}

机构：

[1] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Beijing Lab Metall Mat & Proc Modern Transportat, Beijing 100083, Peoples R China

来源：

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING | 2020年 / 25卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Hot cracking; Al alloys; fusion welding; Shirinkage load; solid fraction; non-equilibrium solidification; microstructure; ALUMINUM-ALLOYS; MUSHY ZONE; MECHANICAL-PROPERTIES; MICROSTRUCTURE; SUSCEPTIBILITY; SOLIDIFICATION; CONTRACTION; BEHAVIOR;

D O I：

10.1080/13621718.2020.1746035

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The higher hot cracking tendency during fusion welding in traditional high-strength 7000 series alloys has been an obstacle for its further application. In this study, the cracking susceptibility can be suppressed by fabricating Al-Mg-Zn-Cu alloys with Zn/Mg <= 1 and Cu/Mg <= 0.25 while simultaneously maintaining the high strength. A T-shaped device combined with non-equilibrium solidification is developed to simulate the solidification during fusion welding, and it is effective to predict the shrinkage load, temperature and solid fraction. The effect of solidification temperature range, the amount of eutectics at the terminal stage of solidification and the shrinkage load during solidification on the hot cracking susceptibility are discussed in detail.

引用

页码：483 / 489

页数：7

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