Ni-base single-crystal superalloy excellent in...

Details Ni-base single-crystal superalloy excellent in... Ni-base single-crystal superalloy excellent in...

C - Chemistry, Metallurgy

22

C

75/113, 148/3.9

C22C 19/05 (2006.01) C30B 11/00 (2006.01)

Patent

CA 1319085

ABSTRACT OF THE DISCLOSURE An Ni-base single-crystal superalloy consisting essentially of 9 - 11 % Cr; 0.5 - 0.8 % Mo; 5.5 - 6.8 % W; 5.2 - 6 % Ta; 5 - 6 % Al; 1.8 - 2.5 % Ti; 4.2 - 4.9 % Co; 0.05 - 0.5 % Re; and the balance of Ni and inevitable impurities. If required, the superalloy may further contain 0.01 - 0.3 % Si. The superalloy has a structure wherein a .gamma.'-phase formed of a fine intermetallic compound is dispersed evenly throughout the matrix, thereby being excellent in high- temperature strength as well as in high-temperature corrosion resistance.

610513

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