| 摘要 |
A method of heat treating and coating a nickel base alloy containing chromium, titanium, aluminum, cobalt, molybdenum, tungsten, boron and carbon. The alloy is heated at a temperature of at least 2050 DEG F. to put most of the coarse gamma prime particles into solution; treated within the temperature range of between 1800 DEG and 2000 DEG F. to initiate the formation of and form randomly dispersed gamma prime particles; treated within the temperature range of between 1500 DEG and 1800 DEG F. to precipitate fine gamma prime particles, to coarsen existing gamma prime particles and to precipitate discrete carbide particles; coated; treated at a temperature of at least 1600 DEG F. to lessen the sharp differential in chemistry between it and the coating at the interface thereof; and treated at a temperature within the range of between 1300 DEG and 1500 DEG F. to precipitate fine gamma prime particles, and discrete carbide particles at grain boundaries. |
