Friction-stir welding of magnesium alloy AZ31B

摘要

The challenges of significant weight reduction in the automobile industries in the U.S., Europe, and Japan in particular, and especially in the context of significant fuel savings, recyclability, and emission reduction, has promoted a focus on both aluminum [1] and magnesium alloy [2] substitutions and structural innovations. Correspondingly, new approaches and processes for joining extrusions and castings in body frames and automotive body panels, etc. have also been pursued [2,3]. While aluminum alloy development and applications have dominated light-weight automotive substitutions, to date magnesium's growth rate in the automotive market in North America and Europe exceeded 20% perannum over the period 1993 to 1997 [2], and continues to rise.