Metal treatment – Stock – Age or precipitation hardened or strengthened
Patent
1989-04-05
1991-11-26
Dean, R.
Metal treatment
Stock
Age or precipitation hardened or strengthened
148 3, 148 127A, 148416, 148417, 148437, 148438, 148439, 148440, 420528, 420535, C22C 2100, B22D 2500
Patent
active
050679945
ABSTRACT:
Aluminium alloy and a method of making it, whereby the alloy contains Zr and from 0 to 1% of one or more of the elements Mg, Si, Ag, Ni and Cu, the balance being mainly Al, the alloy being made on the basis of a melt which contains 0.5 to 2% by weight of Zr and which has been cast into particles by being cooled with such a high velocity that the Zr mainly is present in a supersaturated solution. The particles are consolidated and the Zr is precipitated as finely distributed dispersoids after a heat treatment at 300.degree. to 450.degree. C., and the alloy has an electrical conductivity of at least 58% IACS and a 10% softening temperature of at least 400.degree. C. The consolidation may for instance be carried out by extrusion.
REFERENCES:
patent: 3770515 (1973-11-01), Besel
patent: 4347076 (1982-08-01), Ray et al.
Chemical Abstracts, 104, No. 18, 5-5-86, p. 327, abstract No. 154155g.
Chemical Abstracts, 103, No. 10, 9-9-85, p. 235, Abstract No. 74927z.
Chem. Abstracts 104, No. 6, 2-10-86, p. 291, No. 38439d.
Chem. Abstracts 78, No. 19, 4-9-73, p. 239, No. 87918n.
Brubak Jens P.
Eftestol Bard
Ladiszlaidesz Ferenc
Dean R.
Koehler Robert R.
Raufoss AS
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