Patent ID: 8492675

Claim:
A method for joining metal members, comprising: joining an Fe-based metallic member containing an Fe-based material and an Al-based metallic member containing an Al-based material by interposing a Zn-based filler metal between the Fe-based metallic member and the Al-based metallic member; forming a groove between the Fe-based metallic member and the Al-based metallic member; disposing the Zn-based filler metal on the groove; and heating a joined part of the Fe-based metallic member at a temperature higher than a melting point of the Fe-based metallic member by positioning a center line of a laser beam at a Fe-based metallic member side relative to a center line of the groove, such that a portion of the Fe-based metallic member is directly irradiated by the laser beam, and a size of the portion of the Fe-based metallic member directly irradiated by the laser beam is greater than a size of a portion of the Al-based metallic member directly irradiated by the laser beam.