Specialized metallurgical processes – compositions for use therei – Compositions – Consolidated metal powder compositions
Patent
1992-06-24
1993-07-06
Dean, R.
Specialized metallurgical processes, compositions for use therei
Compositions
Consolidated metal powder compositions
75 1064, 148513, 148514, 148549, 148703, 148403, 148439, 420529, 420533, C22F 102, C22F 1047, C22F 1057
Patent
active
052249832
ABSTRACT:
A rapidly solidified zirconium containing aluminum lithium alloy powder consisting essentially of the formula Al.sub.bal Li.sub.a Cu.sub.b Mg.sub.c Zr.sub.d where "a" ranges from 2.1 to 3.4 wt %, "b" ranges from about 0.5 to 2.0 wt %, "c" ranges from 0.2 to 2.0 wt % and "d" ranges from greater than about 0.6 to 1.8 wt %, the balance being aluminum. The powder is degassed in a vacuum at a temperature of at least about 450.degree. C. Components consolidated from the powder exhibit high tensile strength and elongation together with excellent notched impact toughness.
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N. J. Kim et al., "Microstructure & Mechanical Properties of Rapidly Solidified Al-Li-Cu-Mg-Zr Alloy Die Forging", Proc. Conf. Al-Li V, (1989) p. 123.
Quist et al., "Microstructure & Engineering Properties of Alloy 644 B", Proc. Conf. Al-Li V, (1989), p. 1695.
P. G. Partridge, "Oxidation of Aluminium-lithium alloys in the solid and liquid state", Int. Mat. Reviews, 1, (1990), p. 37.
Das Santosh K.
LaSalle Jerry C.
Limoncelli Edward V.
Raybould Derek
Allied-Signal Inc.
Buff Ernest D.
Dean R.
Fuchs Gerhard H,.
Ip Sikyin
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