Bismuth-containing steel

Details Bismuth-containing steel Bismuth-containing steel

1979-08-29

1981-03-10

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75123R, 75123A, 75123G, 75123N, 75129, 148 2, 148 12R, C22C 3860

Patent

active

042551870

ABSTRACT:
A free machining cast steel shape containing bismuth which functions as a liquid metal embrittler. The ability of the bismuth to function as a liquid metal embrittler is enhanced by restricting the total amount of ingredients which lower the wetting ability of the bismuth to less than the bismuth content and by controlling the amount of strengthening elements added to the steel.

REFERENCES:
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patent: 2978320 (1961-04-01), Larson et al.
patent: 3152889 (1964-10-01), Holowaty
patent: 3152890 (1964-10-01), Holowaty
patent: 3634074 (1972-01-01), Ito et al.
patent: 3679400 (1972-07-01), Nachtman
patent: 3723103 (1973-03-01), Kato et al.
patent: 3973950 (1976-08-01), Itoh et al.
patent: 4004922 (1977-01-01), Thivellier et al.

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