Metal treatment – Compositions – Heat treating
Patent
1981-04-08
1983-09-06
Dean, R.
Metal treatment
Compositions
Heat treating
148 127A, 148415, 148416, 148417, C22F 104
Patent
active
044027630
ABSTRACT:
A heat-resistant aluminum alloy for electrical use, having high heat resistance and conductivity, obtained by subjecting an Al-Zr alloy comprising 0.23-0.35% Zr, the balance consisting of ordinary impurities and aluminum, to melting, casting, hot rolling in the state of high temperature or continuous heating, cold working to a predetermined size, ageing at a temperature within the range of 310.degree. C.-390.degree. C. for 50-400 hours so that Al.sub.3 Zr is dispersed uniformly and in fine particles, and, optionally, further cold working to a degree not exceeding 30% of reduction of area. The resultant aluminum alloy has conductivity in excess of 58% IACS, same strength as 1350 aluminum wire, and 10% softening temperature higher than 400.degree. C. at one hour annealing.
REFERENCES:
patent: 4072542 (1978-02-01), Murakado et al.
Hanaki Yasumasa
Kondo Takasi
Sato Ken'ichi
Yamauchi Kazuhisa
Yokota Minoru
Dean R.
Sumitomo Electric Industries Ltd.
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