Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1978-03-14
1979-03-13
Dean, R.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75122, 75134F, 75134V, 148 115N, 148 115R, 148 31, 148 32, C22C 1900
Patent
active
041440595
ABSTRACT:
Malleable long range ordered alloys having high critical ordering temperatures exist in the V(Fe, Co).sub.3 and V(Fe, Co, Ni).sub.3 systems. These alloys have the following compositions comprising by weight: 22-23% V, 14-30% Fe, and the remainder Co or Co and Ni with an electron density no more than 7.85. The maximum combination of high temperature strength, ductility and creep resistance are manifested in the alloy comprising by weight 22-23% V, 14-20% Fe and the remainder Co and having an atomic composition of V(Fe .sub.0.20-0.26 C Co.sub.0.74-0.80).sub.3. The alloy comprising by weight 22-23% V, 16-17% Fe and 60-62% Co has excellent high temperature properties. The alloys are fabricable into wrought articles by casting, deforming, and annealing for sufficient time to provide ordered structure.
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patent: 3832243 (1974-08-01), Donkersloot et al.
patent: 3898081 (1975-08-01), Kukhar
Van Vucht, " . . . Intermetallic Compds. of the AB.sub.3 Type", J. Less-Common Metals, 11 (1966),308.
Sinha, " . . . AB.sub.3 Structure in . . . Transition Metals", Trans AIME, 245 (1969), 911.
Liu, " . . . Transformations in V--Co--Ni . . . Alloys", Met. Transactions, 4 (1973), 1943.
Stoloff, "Mech. Properties of Ordered Alloys", Progress in Materials Science, vol. 13, Pergamom, 1966.
Liu et al., ". . . Mech. Properties of V--Co--Ni . . . Alloys", 2nd Intn. Conf. on Strength of Materials & Alloys, Sep. 1970, ASM.
Inouye Henry
Liu Chain T.
Carlson Dean E.
Dean R.
Hamel Stephen D.
Roy Upendra
The United States of America as represented by the United States
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