Duplex process for improving the hot workability of aluminum-magnesium alloys
AssigneeSwiss Aluminium Ltd.
InventorsDamian V. Gullotti, William S. Fayard, Wiley W. Wedgeworth
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Abstract
A method of heat treating aluminum alloys of the aluminum-magnesium type to improve the hot workability of the alloys which comprises homogenizing the alloys at a first temperature from 950.degree. to 1050.degree. F for from 2 to 12 hours, cooling the homogenized alloys to a second temperature, further homogenizing said alloys at said second temperature where the second temperature is from 750.degree. to 900.degree. F for from 2 to 12 hours and optionally finally slowly cooling said alloys to at least 800.degree. F at a rate of less than 100.degree. F per hour.
Claims11
A method of heat treating aluminum alloys of the aluminum-magnesium type to improve hot workability which comprises:
- a. homogenizing said alloys at a first temperature of from 950.degree. to 1050.degree. F for from 2 to 12 hours;
- b. cooling the homogenized alloys to a second temperature at a rate of less than 100.degree. F per hour;
- c. further homogenizing said alloys at said second temperature where said second temperature is from 750.degree. to 900.degree. F for from 2 to 12 hours;
- and
- d. finally cooling said alloys to room temperature.
Dependencies are inferred from the claim text.