METHOD FOR JOINING MEMBER TO BE JOINED, AND JOINT BODY

To provide a joining method by which joint processing can be quickly performed, and joining can be properly performed even if there is a gap between two members to be joined.SOLUTION: The method comprises: a process in which a first member to be joined and a second member to be joined are located to constitute an assembly; a process in which the assembly is irradiated with first and second lasers, the first laser forms a light absorptive region as a processing original point on a surface of the first member to be joined or the second member to be joined, and the second laser is radiated so as to include a position which becomes the processing original point, whereby a molten material is produced from the light absorptive region; and a process in which irradiation with the second laser is continued, a gas is generated in the molten material, and the first member to be joined and the second member to be joined are joined via the molten material by a pressure of the gas.SELECTED DRAWING: Figure 8 【課題】迅速に接合処理を行うことが可能な上、２つの被接合部材の間に間隙が存在しても、適正に接合を行うことが可能な接合方法。【解決手段】第１の被接合部材と第２の被接合部材とを配置して、組立体を構成する工程と、前記組立体に第１および第２のレーザを照射する工程であって、第１のレーザは、第１の被接合部材または第２の被接合部材の表面に、加工起点となる光吸収性の領域を形成し、第２のレーザは、前記加工起点となる位置を含むように照射され、これにより、光吸収性の領域から溶融物が生成される工程と、第２のレーザの照射を継続する工程であって、前記溶融物の内部にガスが発生し、前記ガスの圧力により、前記溶融物を介して、第１の被接合部材と第２の被接合部材が接合される、工程と、を有する、方法。【選択図】図８