Impact of liquid metal embrittlement inner cracks on the mechanical behavior of 3 generation advanced high strength steel spot welds

Controlled degradation of the welding parameters is used in this work to produce homogeneous advanced high strength steel (AHSS) resistance spot welds with significant liquid metal embrittlement (LME) inner cracks and study their impact on mechanical behavior. For first time, effect LME damage development monitored using interrupted cross tension tensile shear test. Despite potential stress state at notch tip, observed seldom contribute final fracture path welds, leaving load bearing capacity failure type mostly unaffected or even increased tension.