JOINED MATERIAL OF ALUMINUM-ALLOY EXCELLENT IN FORMABILITY AND METHOD FOR MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a joined material of an aluminum-alloy, which is used for application not requiring a high strength and has improved formability, and to provide a method for manufacturing the same. SOLUTION: The joined material of an aluminum-alloy is formed by mutually joining heat-treated type aluminum-alloys that are previously refined to O-grade. The hardness of the joined part of the material is 110% or more of that of a base material. In the method for manufacturing the material, heat-treated type aluminum-alloys are refined to O-grade, and then mutually joined by friction stir welding. COPYRIGHT: (C)2005,JPO&NCIPI