PRODUCTION METHOD OF LAMINATION STRUCTURE JOINT BODY HAVING THREE OR MORE LAYERS USING FRICTION AGITATION JOINT TOOL, AND LAMINATION STRUCTURE JOINT BODY PRODUCED BY THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a lamination structure joint body in which at least one layer of an intermediate layer member having a relatively low melting point is sandwiched between upper and lower layer members having a relatively high melting point, and a production method of the same.SOLUTION: A method for producing a lamination structure joint body is configured so that between upper and lower layer members 3, 5 made of metal, at least one layer of an intermediate layer member 7 is sandwiched, where the intermediate layer member has a melting point lower than that of the upper and lower layer members 3, 5, and is formed of a material which can be joined to both of the upper and lower layer members by solid phase joint by heat, or deposition joint by heat. A friction agitation joint tool 1 is inserted for deforming the softened upper layer member 3, and the softened upper layer member 3 pushes aside the intermediate layer member 7 and deforms the intermediate layer member, for solid phase joint or dissimilar material joint, and on a lower side of a joint part, the intermediate layer member 7 and the lower layer member 5 are joined by solid phase joint or dissimilar material joint by heat reaction.SELECTED DRAWING: Figure 2