مقاله جوشکاری با عنوان : Effects of Welding Parameters and Surface Pretreatments on ResistanceSpot Welding of AZ31B Mg Alloy Shiquan Zhou1, Lei Liu2,3, Jae Pil Jung4,*, Mok-Young Lee5, and Y. Norman Zhou3 چکیده : The resistance spot weldability of AZ31B magnesium alloy using AC (alternating current) was investigatedin this paper. The surfaces of sheet coupons were prepared by acetone cleaning (as-received) and some couponswere also cleaned with chromic acid (H2Cr2O7) ...