| 摘要 |
The invention concerns a process for manufacturing a component based on Co-Cr-Mo alloys having values of average ultimate elongation at 800°C greater than 10% and of average yielding load at 800°C greater than 400 MPa, comprising the steps of:
a) obtaining a sintered component by means of additive sintering of powders of Co-Cr-Mo alloys containing the respective carbides irregularly dispersed in the molten matrix;
b) carrying out on the sintered component a first heat treatment for solubilization of said carbides at a temperature of between 1100°C and 1300°C for a treatment time of at least 2 hours to form a solubilization intermediate;
c) cooling the solubilization intermediate at a cooling rate at least equal to that of cooling in air to form a cooled intermediate;
d) carrying out on the cooled intermediate a second heat treatment at a temperature of between 700°C and 1000°C so as to obtain said component. |
