Effect of external loading on liquid metal embrittlement severity during resistance spot welding

被引：4
作者：
DiGiovanni, C. [1 ]
Shojaee, M. [1 ]
Biro, E. [1 ]
Zhou, N. Y. [1 ]
机构：
[1] Univ Waterloo, Dept Mech & Mechatron Engn, 200 Univ Ave West, Waterloo, ON N2L 3G1, Canada
来源：
MANUFACTURING LETTERS | 2022年 / 33卷
关键词：
Resistance spot welding; Liquid metal embrittlement; Advanced high strength steel; Manufacturing process design; STEEL;
D O I：
10.1016/j.mfglet.2022.06.003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Advanced high strength steels (AHSS) used in automotive structural components are protected using zinc coatings. However, the steel/zinc system creates the potential for liquid metal embrittlement (LME) during resistance spot welding (RSW). Manufacturing conditions, such as mechanical restraint, were simulated by external loading on the sample during welding. The results showed increased LME severity in all cases, but the material response to external loading was different depending on the material's inherent susceptibility to LME. Therefore, the manufacturing conditions are more critical for certain AHSS grades. This work provides guidelines on process design for LME mitigation and awareness during manufacturing.(c) 2022 Society of Manufacturing Engineers (SME). Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：11 / 14
页数：4
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