| 主权项 |
1. A method of friction stir welding a first member and a second member to form a friction stir weld joint therebetween, the method comprising:
providing a stir tool configured to rotate about and move along a stir tool axis and comprising a pin with a pin axial end surface and a pin tapered surface that extends radially outwardly from the pin axial end surface; providing the first member, the first member comprising a first member faying surface, the first member further defining a normal line that is normal to the first member top surface, is perpendicular to a longitudinal axis extending through the first member, and extends through a reference point; providing the second member, the second member comprising a second member faying surface; forming a first joint interface between the first member and the second member by abutting at least a portion of the first member faying surface with at least a portion of the second member faying surface; rotating the pin of the stir tool; and contacting the rotating pin of the stir tool with the second member faying surface, the stir tool axis being disposed at a side tilt angle upon contact, and the side tilt angle being measured by rotating the stir tool axis about the longitudinal axis from a position parallel to the normal line, wherein the stir tool plasticizes the first member and the second member proximate to the first joint interface thereby forming the friction weld joint. |
