| 摘要 |
PROBLEM TO BE SOLVED: To provide an aluminum alloy clad plate having high strength and high moldability by resolving contradiction with moldability of veneers of 7000 series aluminum alloy at a high strength level.SOLUTION: In an aluminum alloy clad plate, a plurality of aluminum alloy layers are laminated and a diffusion heat treatment is applied. The aluminum alloy layers of a specific composition are laminated so that the contents of Mg or Zn are different from each other. As a constitution after the diffusion heat treatment, the aluminum alloy clad plate has a very fine crystal grain size and a mutual diffusion region in which Mg and Zn in the laminated aluminum alloy layers are mutually diffused in a specified quantity, so that both high strength and high moldability are obtained.SELECTED DRAWING: Figure 1 |
