Metal treatment – Compositions – Heat treating
Patent
1979-12-18
1981-08-18
Skiff, Peter K.
Metal treatment
Compositions
Heat treating
148 127A, C22F 104, C22C 2106
Patent
active
042844371
ABSTRACT:
A hard tempered aluminum alloy sheet useful for deep drawing is prepared by a process comprising the steps of hot rolling an ingot of aluminum alloy consisting essentially of 4.0 to 6.0 Mg wt. %, at least one component selected from the group consisting of 0.1 to 0.7 wt. % Mn, 0.01 to 0.05 wt. % Zr, 0.005 to 0.12 wt. % V and up to 0.05 wt. % Ti and the balance aluminum to a sheet not more than 2.5 mm thick, intermediate annealing the hot rolled alloy and final cold rolling the annealed alloy to effect a rolling reduction of less than 85%.
In case the finishing temperature of the hot rolling is adjusted to a temperature of 300.degree. to 350.degree. C., the above intermediate annealing can be omitted.
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Thorley et al., "The Control of Earing in Aluminum and Its Alloys", Journal of the Institute of Metals, vol. 86, 1957-1958, pp. 353-361.
Baba Yoshio
Tobinaga Masaaki
Tsuchida Shin
Skiff Peter K.
Sumitomo Light Metal Industries Ltd.
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