Resistance spot welding of magnesium alloys

Resistance spot welding (RSW) of magnesium alloy is discussed in this chapter. Surface condition is important for RSW of magnesium due to the high chemical reactivity of magnesium and because oxides that form are hard, strong and electrically insulated. Expulsion, weld strength and electrode life are all related to surface conditions. Welding conditions (welding current, weld time, electrode force and weld spacing), nugget growth and dynamic …