Alloys or metallic compositions – Nickel base – Chromium containing
Patent
1992-06-17
1995-03-07
Dean, Richard O.
Alloys or metallic compositions
Nickel base
Chromium containing
2282623, 428680, C22C 1905
Patent
active
053955846
ABSTRACT:
Nickel-base superalloy composition for the repair, coating or rebuilding of the surface of a superalloy substrate, such as a single crystal nickel-base superalloy, to impart thereto surface areas having improved high temperature properties such as hot corrosion resistance. The present compositions are applied by low heat-input welding processes, such as laser welding or plasma arc welding, and are formulated to provide hot corrosion resistance properties and yet to have good weldability properties. The composition contains, by weight percentages, 2-12.5 Cr, 6-17 Cr, 0.5-7 Mo, 0.5-4 Ta, 2.5-9.5 Al, 1-4 Re, 1.5-8.5 W, 0.01-2.5 Nb, 0.5-6 Ti, 0.01-0.7 Yt, 0.02-3.5 Hf, and balance Ni.
REFERENCES:
patent: 4388124 (1983-06-01), Henry
patent: 5068084 (1991-11-01), Cetel et al.
patent: 5077141 (1991-12-01), Naik et al.
patent: 5154884 (1992-01-01), Wukusick et al.
Berger Charles
Iovene Michael
Avco Corporation
Dean Richard O.
Phipps Margery S.
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