Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1976-11-24
1978-02-14
Stallard, W.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
B23K 3522
Patent
active
040736393
ABSTRACT:
In filling voids in or between metallic articles, as in the repair of cracks or other surface defects in castings, the void is filled with a powder mix which upon heat treatment fills the void. The filler powder mix is a blend of at least two distinct powder components and in terms of overall composition preferably corresponds to that of article being repaired. The components comprising the mix are selected to provide a transient liquid phase and isothermal resolidification of a portion of the mix at the temperature below the article melting point. A subsequent heat treatment is preferably utilized for homogenization.
REFERENCES:
patent: 3322546 (1967-05-01), Tanzman et al.
patent: 3539192 (1970-11-01), Prasse
patent: 3632319 (1972-01-01), Hoppin et al.
patent: 3700427 (1972-10-01), Hoppin et al.
Duvall David S.
Owczarski William A.
Paulonis Daniel F.
Schaefer Robert P.
Sohl Charles E.
Stallard W.
United Technologies Corporation
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