Abstract
Resistance spot welding of BTR165 was applied to study property of its joint by using power-frequency alternating current welding equipments. The tension strength, hardness distribution, microstructure and tensile fracture appearance were analyzed. The test results show that the hot-stamped steel has good weldability and could obtain better performance by optimizing technology. The microstructure of spot welded metal is martensite (M), tensile failure mode is button pull-out fracture, The fracture morphology has plastic dimple characteristic.
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