Nickel-base superalloy

Details Nickel-base superalloy Nickel-base superalloy

1996-10-25

1999-03-30

Phipps, Margery

Alloys or metallic compositions

Nickel base

Chromium containing

148404, 148410, 148428, C22C 1905

Patent

active

058884513

ABSTRACT:
A nickel-base superalloy, in particular for the fabrication of monocrystalline components, consisting essentially of (measured in wt %) 6.0-6.8% of Cr, 8.0-10.0% of Co, 0.5-0.7% of Mo, 6.2-6.6% of W, 2.7-3.2% of Re, 5.4-5.8% of Al, 0.5-0.9% of Ti, 7.2-7.8% of Ta, 0.15-0.3% of Hf. 0.02-0.04% of C, 40-100 ppM of B, the remainder being nickel with impurities. The ratio (Ta+1.5 Hf+0.5 Mo-0.5 Ti)/(W+1.2 Re) is greater than or equal to 0.7.

REFERENCES:
patent: 5100484 (1992-03-01), Wukusick et al.
patent: 5470371 (1995-11-01), Darolia
patent: 5549765 (1996-08-01), Mihalisin et al.
"Development of Two Rhenium-Containing Superalloys for Single-Crystal Blade and Directionally Solidified Vane Applications in Advanced Turbine Engines", K. Harris, et al., Journal of Materials Engineering and Performance, Aug. 1993, No. 4, pp. 481-487.

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