| 摘要 |
PROBLEM TO BE SOLVED: To obtain a copper based alloy having excellent fatigue properties without applying a load to the environment. SOLUTION: Regarding the copper based alloy, its phase is made into aβsingle phase or intoβ+α2 phases at high temperature, and theβphase is made into aβ' martensite phase at low temperature. The volume fraction of theαphase is 5 to 80%, and the alloy has a composition at least comprising Al and Mn. The alloy preferably has a composition comprising, by weight, 3 to 10% Al, 5 to 20% Mn and≤10% Ni or Co, and the balance copper (Cu) with inevitable impurities. COPYRIGHT: (C)2007,JPO&INPIT
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