Bars of metallic composite material made by unidirectional solid

Details Bars of metallic composite material made by unidirectional solid Bars of metallic composite material made by unidirectional solid

1981-09-30

1984-07-10

Rutledge, L. Dewayne

Metal treatment

Stock

Directionally solidified

420447, 420590, C22C 1905

Patent

active

044591616

ABSTRACT:
A method and apparatus for manufacturing bars made of an alloy by unidirectional solidification.
The mold is moved relative to a hot source and a cold source disposed below the hot source. The relative positions of the two sources as well as their efficiency and the displacement speed of the mold are set so that there is established within the alloy contained in the mold a planar solidification front with a high thermal gradient at the level of the front, and so that there is produced an orientation of the structure of the alloy which is perpendicular to the solidification front. During the whole duration of the solidification, the mold is fed with alloy powder having the required nominal composition at the rate corresponding to the quantity of alloy solidified per unit of time.

REFERENCES:
patent: 2205865 (1940-06-01), Schwarzkopf
patent: 2225424 (1940-12-01), Schwarzkopf
patent: 3528808 (1970-09-01), Lemkey et al.
patent: 3871835 (1975-03-01), Bribring
patent: 3985582 (1976-10-01), Bribring
patent: 4043841 (1977-08-01), Bribring
patent: 4307769 (1981-12-01), Hauser et al.

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