FRICTION STIR WELDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a friction stir welding method capable of improving the strength of a weld zone after welding. SOLUTION: The friction stir welding method concerning the embodiment in this invention comprises: a step where two metallic materials as austenitic stainless steel refined by being subjected to cold working are heated at a prescribed temperature of 400 to 550°C; and a step where the edge parts of the metallic materials heated by the above stage are butted, and are subjected to friction stir welding along the space between the edge parts. According to this friction stir welding method, the strength of the weld zone after welding can be more improved. COPYRIGHT: (C)2007,JPO&INPIT