| 摘要 |
An alloy composition for an aluminum diecasting mold, manufactured by keeping a Co-Cr-Mo based alloy which consists of 60 to 70 mass% of Co, 25 to 33 mass% of Cr, and 4 to 7 mass% of Mo with the balance consisting of Si, Mn, Fe, Zr, C, N and/or unavoidable impurities in the atmosphere at a temperature of 600 to 900°C for 0.5 to 5 hours to oxidize the surface thereof, and consisting of an fcc gamma-phase, an hcp epsilon-phase or a mixture of both; and a manufacturing process therefor. |
