Lining of Aluminum Alloys with Hard-Metal Foils Using Shot Peening

摘要

A method for lining aluminum alloys with hard-metal foils using shot peening is proposed. The foil is bondedto the surface of the aluminum alloy due to plastic deformationgenerated by the collision of the shots. The foil and base metalare heated to a temperature of 500 deg C to improve theweldability. A test using a single shot is carried out to evaluatethe possibility of bonding. In this test, aluminum alloyworkpieces are A2017 and A5056, and the hard-metal foils aremild steel, nickel, titanium and stainless steel SUS304 of 0.1mm thickness. By inserting a pure aluminum foil, the hard-metal foil is successfully bonded to the aluminum alloys, even atroom temperature. Finally, in actual shot peening using manyshots, the hard-metal foils are bonded over the surface of the base metals.