Currently, high-strength steels are increasingly used in the production of car bodies. Car manufacturers choose steel with good formability, fatigue resistance, and the ability to absorb impact energy. DP (dual-phase) steels verify the specific criteria mentioned above. Resistance spot welding is one of the most common methods of joining high-strength dual-phase steels. The paper focuses on the comparison of the properties of joints made by resistance spot welding. Selected properties were investigated by tensile test and metallographic observations. HCT600X + Z and HCT600X + ZF steel sheets were used for the experiments.
resistance spot welding, tensile test, metallography, HCT600X+Z, HCT600X+ZF
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