Tensile and Creep Properties of Novel Powder Metallurgy Ni-based Superalloy

The development of novel powder superalloys for aero-engine turbine disks holds significant implications. In this paper, the microstructure and mechanical properties of a novel powder nickel-based superalloy are evaluated, followed by a brief discussion of the relationship between tensile and creep properties. The results revealed that the new alloy exhibits good microstructural stability after long-term aging and excellent tensile strength at different temperatures. In particular, the creep properties are significantly superior compared to other alloys. In addition, it is verified that the Monkman-Grant relationship modified by tensile parameters has better validity.