ALUMINUM ALLOY COMPOSITE MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide an aluminum alloy material which is excellent in corrosion resistance and stress corrosion cracking resistance and is excellent in mechanical strength including fatigue strength. SOLUTION: The aluminum alloy composite material includes: a first columnar aluminum alloy member 11; and a second aluminum alloy member 12a which is diffusion-bonded to surround the circumferential surface of the first aluminum alloy member 11. The first aluminum alloy member 11 is composed of a material having high fatigue strength as compared with the second aluminum alloy member 12a. The second aluminum alloy member 12a is composed of a material having high corrosion resistance as compared with the first aluminum alloy member 11. COPYRIGHT: (C)2011,JPO&INPIT