Patent ID: 9616520
Date: 2017-04-11
CPC Classifications: B23K,Y10T

Claim:
1. A friction stir welding member which is formed by welding a second member to a first member in such a manner that the second member is stacked on the first member, a material property of the second member being different from a material property of the first member, a pin of a welding tool using a Friction Stir Welding technique is inserted into the second member, welding is started at one end of the second member, the pin is advanced toward an other end of the second member during the welding, and the pin is pulled out at a welding terminal portion before the pin reaches the other end of the second member, wherein a depressed portion open toward the second member and entirely disposed at an area at which the welding terminal portion is located is provided integrally with the first member prior to inserting the welding tool into the second member, part of the second member flows into the depressed portion, and a portion of the second member that corresponds to the depressed portion is provided with the welding terminal portion.