Research on Weldability of High Aluminum Dual Phase Steel WHT600DP for Spot Welding
The weldability for spot welding of 600 MPa high aluminum dual phase steel WHT600DP,which was newly developed by WISCO,was studied by microstructure observation,hardness test and tensile shearing strength test of the joint between WHT600DP and different materials,such as DC03 and WH260Y.The results show that the joints are free of defects,and the weld performances such as tensile shear strength can meet the requirements of automobile industry,which indicate the excellent weldability of WHT600DP steel.