METHOD FOR JOINING DIFFERENT MATERIALS

摘要

The purpose of the present invention is to provide a method for joining different materials, the method capable of prolonging the life of a joining tool and achieving soundness of a joined portion. This method for joining different materials using a joining tool (10) provided with a shoulder portion (13) and a probe (12) protruding from the shoulder portion is configured to butt a soft material (22) having a lower melting point than a hard material (21) against the hard material, and implement a friction stir joining method while maintaining a gap (c) between the shoulder portion and the hard material and maintaining a gap between the shoulder portion and the soft material.