Fatigue crack resistant astroloy type nickel base superalloys and product formed

摘要

The present invention provides an alloy having improved crack growth inhibition and having high strength at high temperatures. The composition of the alloy is essentially as follows:PP ______________________________________ PPIngredient Concentration in Weight % PP ______________________________________ PPNi balance PPCo 10 PPCr 15 PPMo 4 PPAl 4 PPTi 3.5 PPTa 2.5 PPNb 1.25 PPZr 0.06 PPC 0.05 PPB 0.03 PP ______________________________________ PP