Hot workability of an age hardenable nickle base alloy

Details Hot workability of an age hardenable nickle base alloy Hot workability of an age hardenable nickle base alloy

1981-09-08

1983-03-15

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75 49, 75 82, 751305, 420443, 420582, C22C 3300, C22C 1905

Patent

active

043766501

ABSTRACT:
Very significant improvements in the hot workability of an age hardenable nickel base alloy containing 17 to 20 percent chromium, 2.9 to 5.3 percent titanium, 1.8 to 2.8 percent aluminum, 11 to 15.5 cobalt, 2.5 to 7 percent molybdenum, 0.8 to 1.5 percent tungsten, 0.004 to 0.040 percent boron, 0.02 to 0.06 percent carbon and about 52 to about 57 percent nickel are achieved by melting the raw materials under vacuum in the presence of lime, and forming a desulfurizing lime slag on the surface of the molten raw materials, and thereafter adding magnesium thereto just prior to casting the alloy, preferably while maintaining the molten raw material under an inert gas atmosphere.

REFERENCES:
patent: 3467167 (1969-09-01), Mahin
patent: 3607229 (1971-09-01), Knuppel
patent: 3695946 (1972-10-01), Demeaux

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