Cast thermally stable high temperature nickel-base alloys and ca

Details Cast thermally stable high temperature nickel-base alloys and ca Cast thermally stable high temperature nickel-base alloys and ca

1975-12-29

1977-08-23

Dean, R.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

148 325, 148162, C22C 1905

Patent

active

040438104

ABSTRACT:
A cast thermally stable high temperature nickel-base alloy characterized by superior oxidation resistance, sustainable hot strength and retention of ductility on aging is provided by maintaining the alloy chemistry within the composition molybdenum 13.7% to 15.5%; chromium 14.7% to 16.5%; carbon up to 0.1%, lanthanum in an effective amount to provide oxidation resistance up to 0.08%; boron up to 0.015%; manganese 0.3% to 1.0%; silicon 0.2% to 0.8; cobalt up to 2.0%; iron up to 3.0%; tungsten up to 1.0%; copper up to 0.4%; phosphorous up to 0.02%; sulfur up to 0.015%; aluminum 0.1% to 0.5% and the balance nickel while maintaining the Nv number less than 2.31.

REFERENCES:
patent: 2067569 (1937-01-01), Hessenbruch
patent: 3203792 (1965-08-01), Scheil et al.
patent: 3304176 (1967-02-01), Wlodek

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