Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1979-08-13
1981-03-24
Kaplan, G. L.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
148 12F, 148 36, 148134, 148143, 148144, C22C 3804, C21D 600
Patent
active
042578086
ABSTRACT:
A ferritic cryogenic steel which has a relatively low (about 4-6%) manganese content and which has been made suitable for use at cryogenic temperatures by a thermal cycling treatment followed by a final tempering. The steel includes 4-6% manganese, 0.02-0.06% carbon, 0.1-0.4% molybdenum and 0-3% nickel.
REFERENCES:
patent: Re28645 (1975-12-01), Aoki et al.
patent: 3388988 (1968-06-01), Nagashima et al.
patent: 4047979 (1977-09-01), Grange et al.
patent: 4162158 (1979-07-01), Hwang et al.
J. W. Morris, Jr. et al., "The Use of Martensite Reversion in the Design of Tough Cryogenic Steels", _Proc. First Jim Internat. Symposium, May 10-12, 1976.
S. Jin et al., Metallurgical Trans. A, vol. 6A, pp. 141-149 (1975).
Morris, Jr. John W.
Niikura Masakazu
Bernheim William S.
Denny James E.
Hill Gwenetta Douglas
Kaplan G. L.
The United States of America as represented by the United States
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