| 摘要 |
An alloy composition which contains 15.5-16.5 wt% Cr, 7.5-15.5 wt% Mo, 0-30 wt% Co, 4.5-15 wt% Fe, and 0.5-4.0 wt% Cu, with the remainder comprising Ni and unavoidably included elements, and in which the crystal phase consists only of a γ phase and the Vickers hardness at room temperature is 500 HV or greater. Thus, an Ni-Co-Cr-Mo alloy that combines corrosion resistance with wear resistance is obtained. The Ni-Co-Cr-Mo alloy is obtained by subjecting an ingot of an alloy having the makeup to a homogenization treatment at 1,100-1,300°C for 4-24 hours, subsequently to cold working at a degree of reduction of 30-60%, and then to an aging treatment for 0.5-3 hours in the temperature range of 300-600°C. |
