Method of forming a superalloy

Details Method of forming a superalloy Method of forming a superalloy

1977-11-14

1978-10-10

Dean, R.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75171, C22C 103

Patent

active

041194586

ABSTRACT:
A method of forming a regular solution secondary eutectic nickel-base or cobalt-base superalloy--which contains, on a weight basis, 2-9% rhenium and less than about 0.8% titanium, and optionally an element selected from the group consisting of chromium, aluminum, tantalum, carbon, nickel, cobalt, tungsten, vanadium, molybdenum, niobium, hafnium, zirconium and boron--which comprises combining at a temperature above the eutectic melt temperature of the superalloy (1) a primary eutectic nickel-base or cobalt-base superalloy scrap containing, on a weight basis, 2-9% rhenium, and less than about 0.8% titanium, and optionally said elements; (2) a first master alloy containing the elements nickel, aluminum, vanadium, and carbon; (3) a second master alloy containing the elements nickel and carbon, and (4) elements selected from the group consisting of rhenium, titanium, chromium, aluminum, tantalum, nickel, cobalt, tungsten, molybdenum, niobium, hafnium, zirconium and boron including combinations thereof in alloy form.

REFERENCES:
patent: 3904402 (1975-09-01), Smashey
patent: 3944416 (1976-03-01), Walter

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