Tri-nickel aluminide compositions alloyed to overcome hot-short

Details Tri-nickel aluminide compositions alloyed to overcome hot-short Tri-nickel aluminide compositions alloyed to overcome hot-short

Filed on

1985-10-03

Date issued

1986-09-23

Examiner

Lechert, Jr., Stephen J.

Patent Class

Specialized metallurgical processes, compositions for use therei

SubClass

Compositions

SubSubClass

Consolidated metal powder compositions

Other Related Categories

75 05C, 75 82, 148 115A, 148 115N, 148 115P, 1481261, 148133, 148429, 420459, 420460, 420590, 419 30, 419 38, 419 49, 419 62, 419 66, 419 68, B22F 300

Type

Patent

Status

active

Patent number

046133682

Description

ABSTRACT:
A tri-nickel aluminide base composition is provided which has good ductility at all temperatures. The composition has a relatively high concentration of cobalt substituent and is doped by boron. It also has minor concentrations of at least two other substituent metals selected from the group consisting of niobium, hafnium, vanadium, molybdenum and zirconium.

REFERENCES:
patent: 2755184 (1956-07-01), Turner et al.
patent: 3653976 (1972-04-01), Miller et al.
patent: 3902900 (1975-09-01), Restall et al.
patent: 3922168 (1975-11-01), Restall et al.
patent: 4379720 (1983-04-01), Ray et al.
patent: 4478791 (1984-10-01), Huang et al.
A. I. Taub, S. C. Huang & K. M. Chang, "High Temperature Ductility Minimum in Rapidly Solidified Ni.sub.3 Al-B", Mat. Res. Soc. Symp. Proc., vol. 39 (1985), Materials Research Society.
C. T. Liu & C. C. Koch, "Development of Ductile Polycrystalline Ni.sub.3 Al For High-Temperature Applications", Technical Aspects of Critical Materials Use by the Steel Industry, NBSIR 83-2679-2, vol. IIB (Jun. 1983), Center for Materials Science, U.S. Dept. of Commerce, Nat'l. Bureau of Standards.

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