Ductile long range ordered alloys with high critical...

Details Ductile long range ordered alloys with high critical... Ductile long range ordered alloys with high critical...

C - Chemistry, Metallurgy

22

C

75/106

C22C 19/00 (2006.01) C22C 27/02 (2006.01) C22C 30/00 (2006.01)

Patent

CA 1115561

Abstract of the Invention Malleable long range ordered alloys having high critical ordering temperatures exist in the V(Fe, Co)3 and V(Fe, Co, Ni)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,20-,26 Co 74_ 80)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. Alloys of the subject composition range are useful as structural components in apparatus where high strength and creep resistance are required at elevated temperatures.

320959

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