The plate of the structure null pair which is produced with pile frictional churning junction

摘要

PROBLEM TO BE SOLVED: To provide a lap friction stir joining method that can reduce the susceptibility to cracking from a retreating side and to provide a structure manufactured by the method.;SOLUTION: The lap friction stir joining method comprises lapping a pair of plate materials 1, 2 on top of each other, pressing a tool 3 having a screw 5 part against a lapped part 6 from the surface of one plate material 1 side, and moving the tool 3 along the lapped part 6 to join the pair of plate materials 1, 2 to each other. The tool 3 is rotated in a direction R opposite to a winding direction of the screw 5 to form an advancing side AS on the side opposite to the end 1a of the lapped part 6 of one plate material 1.;COPYRIGHT: (C)2010,JPO&INPIT