Evaluation of resistance spot weldability and weld performance of zinc-coated martensitic steels
Source abstract
Abstract
This paper explores the resistance spot weldability of three martensitic (MS) steels of 1500 MPa tensile strength. A weld diameter versus current plot was developed for the three MS steels to investigate their weldable current range and expulsion characteristics. The mechanical performance of the welds was investigated using cross-tension, tensile-shear and hardness tests. It was found that the differences in electrical resistivity during the nugget growth period influenced the expulsion limit and, consequently, the weldable current range. The three MS steels failed in pullout failure mode but exhibited different plug ratios. Finally, the mechanical strength of the three MS steels was observed to be better than the other advanced high-strength steels (AHSS) such as DP600, TRIP1000 and PHS1500 steels.
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Research context
OpenAlex topics: Advanced Welding Techniques Analysis · Metal and Thin Film Mechanics · Welding Techniques and Residual Stresses
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Metallurgical and Materials Engineering, The University of Alabama, Tuscaloosa, AL, USA
Department of Mechanical Engineering, The University of Alabama, Tuscaloosa, AL, USA
Mercedes-Benz AG, Germany
Funding
MBUSI
References (29)
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