Metal founding – Process – With measuring – testing – inspecting – or condition determination
Patent
1993-05-03
1994-05-24
Bradley, Paula A.
Metal founding
Process
With measuring, testing, inspecting, or condition determination
164 551, B22D 2720
Patent
active
053140001
ABSTRACT:
This invention relates to a method for controlling the grain size distribution in cast parts made from nickel-based superalloys. Such methods of this type, generally, employ the use of different inoculant concentration levels to balance the differences in cooling rates that occur at different regions of the cast part in order to achieve the desired microstructure of the cast part.
REFERENCES:
patent: 3158912 (1964-12-01), Schweikert
patent: 4004630 (1977-01-01), Dunks
patent: 4667725 (1987-05-01), Backerud
patent: 4806157 (1989-02-01), Subramanian
"The Use of Gas-Generating Mold Coatings for the Grain Refinement of Aluminum," Metallurgical Trans. B, vol. 10B, pp. 203-210, Jun. 1979.
Perry Erin M.
Wang Hsin-Pang
Bradley Paula A.
General Electric Company
Puknys Erik R.
Webb II Paul R.
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