Microstructure characteristics and performance of dissimilar welds between magnesium alloy and aluminum formed by friction stirring

The friction stir welding of AZ31Mg/1060Al has been investigated. The welds were formed when the stirring pin was off the centerline to AZ31 or to 1060, and are characterized by intercalation lamellae. Al3Mg2 and Al12Mg17 cause the weld to crack during friction stir welding on the centerline of the weld.