Research on the Influence of Liquid Metal Embrittlement Cracks on the Strength and Fatigue Life of Spot-Welded Joints of Galvanized Q&P980 Steel

• Published in: Materials Vol. 17; no. 24; p. 6149
• Main Authors: Zou, Jie, Xiang, Huayang, Zhan, Zhenfei, Zhuo, Wenbo, Huang, Li, Ji, Yuxiang, Liu, Qing
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 16.12.2024
• Subjects: Analysis; Carbon steel; Corrosion resistance; Crack propagation; Ductility; Electrodes; Fatigue; Fatigue cracks; Fatigue failure; Fatigue life; Fatigue testing machines; Fatigue tests; Fracture mechanics; Fracture surfaces; Galvanized steel; Galvanized steels; Galvanizing; High strength steel; High strength steels; Impact analysis; Liquid metal embrittlement; Materials; Mechanical properties; Metal fatigue; Propagation; Resistance spot welding; Shear tests; Simulation methods; Steel, Galvanized; Steel, High strength; Stress concentration; Surface analysis (chemical); Tensile tests; Welded joints; Welding; Zinc; China; resistance spot welding; liquid metal brittleness; finite element analysis; fatigue test

Galvanized high-strength steel has emerged as a key focus in automotive lightweighting research. During resistance spot welding of galvanized steel, the phenomenon of liquid metal embrittlement (LME) can occur, which is characterized by the appearance of irregular cracks on the weld spot surface. Ho...