Elimination of carbide segregation to prior particle boundaries

Abstract From the Canadian patent

Carbide segregation to the prior boundaries of particles used in powder metallurgy to generate an article is eliminated through the use of a nickel-base alloy powder which coordinates carbon with the amount of Mo and W which can form detrimental amounts of undesirable carbides and with Cb, Ta, Hf and Zr which are strong formers of a desirable MC-type carbide. The alloy may be made up in the form of rods, bars, billets etc, as well as more finished article shapes such as gas turbine wheels, blade members etc.