| 摘要 |
PROBLEM TO BE SOLVED: To provide the friction stir treating method of a dissimilar material joining part and a friction stir welding method of dissimilar materials, with which dissimilar materials are joined or the joining part thereof is friction stir treated, by making the shape of a joining part of joining members a simple shape and without restriction in shapes or dimensions of joining members. SOLUTION: In the friction stir treating method of a dissimilar material joining part, there is used a friction stir member including a friction stirring tool 40 with a flat end face and a tapered pin 50 provided to the end face of the friction stirring tool 40, wherein the tapered pin is configured to have a truncated cone that forms a prescribed angle determined on the basis of a stress specificity dissipation range obtained from the stress specificity analysis of the ends of the joining interface of dissimilar materials with respect to the end face of the friction stirring tool, and that has a cross section gradually decreasing toward the tip end. Then, the friction stir member is rotated, and the friction stir treatment is performed along at least one joining edge of the joining interface 30 of the dissimilar materials. COPYRIGHT: (C)2010,JPO&INPIT |
