γ 'high solvus, nickel-based single crystal superalloy

摘要

PROBLEM TO BE SOLVED: To provide an nickel-base superalloy increased in creep resistance. ;SOLUTION: The superalloy is suitable for production of turboengine parts by single crystal solidification and has a composition consisting of, by mass, 3.5-7.5% Cr, 0-1.5% Mo, 1.5-5.5% Re, 0-5.5% Ru, 3.5-8.5% W, 5-6.5% Al, 0-2.5% Ti, 4.5-9% Ta, 0.08-0.12% Hf, 0.08-0.12% Si, and the balance, based on 100%, Ni with permissible impurities.;COPYRIGHT: (C)2000,JPO