Work-hardenable austenitic manganese steel and method for the pr

Details Work-hardenable austenitic manganese steel and method for the pr Work-hardenable austenitic manganese steel and method for the pr

1983-10-11

1985-07-30

Rutledge, L. Dewayne

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75126B, 75128A, 148 3, 148137, 148 38, C22C 3930

Patent

active

045319740

ABSTRACT:
A work-hardenable austenitic manganese steel has a base composition (each in percent by weight) of 0.7 to 1.7 carbon, 5.0 to 18.0 manganese, 0 to 3.0 chromium, 0 to 4.0 nickel, 0 to 2.5 molybdenum, 0.1 to 0.9 silicon, up to 0.1 phosphorus and contains micro-alloying elements of 0.0 to 0.20 titanium, 0.0 to 0.05 zirconium and 0.0 to 0.05 vanadium; the remainder being iron and impurities arising from the melting process. The ratio of carbon to manganese is in the range of 1:4 to 1:14 and the total amount of micro-alloying elements is limited to a range of 0.002 to 0.25 percent by weight. The melt of the base composition is tapped at 1,450.degree. C. to 1,600.degree. C. into a casting ladle in which the micro-alloying elements are added. An ingot is cast, cooled, reheated to austenitization temperatures and quenched.

REFERENCES:
patent: 3113861 (1963-12-01), Norman
patent: 4302248 (1981-11-01), Kasamatsu et al.

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