The research status of welding of magnesium alloys by fusion welding and solid - phase joining at home and abroad is summarized. The problems in magnesium alloy welding which include the solidification cracking, the appearance of porosity during solidification and large distortion of the welded joint are analyzed. Friction stir welding process can improve mechanical properties as well as decrease distortion and residual stress. The research trend and emphases of magnesium alloys welding are also brought for...
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