Journal
SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
Volume 18, Issue 5, Pages 361-403Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1179/1362171813Y.0000000120
Keywords
Resistance spot welding; Automotive steels; AHSS; Failure mode; Microstructure; Mechanical performance
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Spot welding, particularly resistance spot welding (RSW), is a critical joining process in automotive industry. The development of advanced high strength steels for applications in automotive industry is accompanied with a challenge to better understand the physical and mechanical metallurgy of these materials during RSW. The present paper critically reviews the fundamental understanding of structure-properties relationship in automotive steels resistance spot welds. The focus is on the metallurgical characteristics, hardness-microstructure correlation, interfacial to pullout failure mode transition and mechanical performance of steel resistance spot welds under quasi-static, fatigue and impact loading conditions. A brief review of friction stir spot welding, as an alternative to RSW, is also included.
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