Metal treatment – Compositions – Heat treating
Patent
1984-02-29
1987-04-28
Dean, R.
Metal treatment
Compositions
Heat treating
75249, 148 115A, 148 115P, 148415, 148416, 148417, 148418, 148438, 148439, 148440, 420902, C22F 104
Patent
active
046611720
ABSTRACT:
The present invention provides a low density aluminum-base alloy, consisting essentially of the formula Al.sub.bal Zr.sub.a Li.sub.b Mg.sub.c T.sub.d, wherein T is at least one element selected from the group consisting of Cu, Si, Sc, Ti, V, Hf, Be, Cr, Mn, Fe, Co and Ni, "a" ranges from about 0.25-2 wt %, "b" ranges from 2.7-5 wt %, "c" ranges from about 0.5-8 wt %, "d" ranges from about 0.5-5% and the balance is aluminum. The alloy has a primary, cellular-dendritic, fine-grained, supersaturated aluminum alloy solid solution phase with intermetallic phases of the constituent elements uniformly dispersed therein. A consolidated article can be produced by compacting together particles composed of the aluminum alloy of the invention in a vacuum at elevated temperature. The compacted alloy is solutionized by heat treatment, quenched in a fluid bath, and optionally, stretched and aged. The microstructure of the consolidated article is composed of an aluminum solid solution containing a substantially uniform distribution of fine intermetallic precipitates.
REFERENCES:
patent: 4347076 (1982-08-01), Ray et al.
Tietz and Palmer, "Advanced P/M Aluminum Alloys", 1981, pp. 206-211.
D. B. Williams, "Aluminum-Lithium Alloys", Proc. 1981 Conference, pp. 89-100.
Sahin, et al., "Extended Solid Solubility, Grain Refinement and Age-Hardening in Al-1, to 13 wt % Zr Rapidly Quenched from the Melt", 1978, pp. 138-146.
Adam Colin M.
Okazaki Kenji
Skinner David J.
Allied Corporation
Buff Ernest D.
Dean R.
Fuchs Gerhard H,.
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