Progress in Alloy Design of Nickel-based Superalloys

Research status of the design of nickel-based superalloys is reviewed.The influences of creep resistance,microstructural stability,castability,density and cost on the design of superalloys are analyzed.The guidelines, theoretical basis and application of the superalloy design methods,such as phase computation,d-electrons concept,regression analysis,phase diagram calculation,are presented respectively.Finally,based on the operating requirements of the superalloys,the tendency and prospect of superalloy design methods are pointed out.