F* and W temper aluminum alloy products and methods of making the same
Disclosed herein are aluminum alloy products and methods of making the aluminum alloy products. Specifically, disclosed herein is an aluminum alloy provided in a temper achieved by rapidly quenching the aluminum alloy product after hot rolling. The aluminum alloys provided in the tempers described herein allow an end user to further process the aluminum alloys using less time and requiring less energy.
1. A method of producing an aluminum alloy product comprising:
casting a heat treatable aluminum alloy to form a cast aluminum alloy;
heating the cast aluminum alloy;
hot rolling the cast aluminum alloy to produce a rolled product;
quenching the rolled product at a quench rate of from about 10° C./s to about 1000° C./s, wherein the quenching is performed during hot rolling the cast aluminum alloy;
coiling the rolled product to provide an aluminum alloy product, and
preparing the aluminum alloy product for forming by heating the aluminum alloy product to a temperature of from 400° C. to 580° C. and maintaining the aluminum alloy product at the temperature for 5 minutes or less
wherein the aluminum alloy product is in F* or W temper.
2. The method of claim 1 , wherein the quench rate is from about 200° C./s to about 1000° C./s.
3. The method of claim 1 , wherein the quench rate is from about 500° C./s to about 1000° C./s.
4. The method of claim 1 , wherein the quenching is performed using air, water, oil, a water-oil emulsion, or any combination thereof.
5. The method of claim 1 , further comprising cold rolling the rolled product after the quenching.
6. The method of claim 1 , wherein an annealing step is not performed subsequent to a forming step.
7. The method of claim 1 , wherein the heat treatable aluminum alloy comprises a 2xxx series aluminum alloy, a 6xxx series aluminum alloy, a 7xxx series aluminum alloy, or an 8xxx series aluminum alloy.
8. The method of claim 1 , wherein the aluminum alloy product comprises a monolithic aluminum alloy product or a clad aluminum alloy product.
9. The method of claim 1 , wherein the maintaining is performed for 3 minutes or less.
10. The method of claim 9 , wherein the maintaining is performed for 1 minute or less.
11. The method of claim 10 , wherein the maintaining is performed for 30 seconds or less.
12. The method of claim 1 , wherein a cycle time for performing the heating and the maintaining is at least 20% shorter than an at least 15 minute cycle time for performing the heating and the maintaining for an aluminum alloy product prepared without quenching the rolled product after the hot rolling step.
13. The method of claim 12 , wherein the cycle time for performing the heating and the maintaining is at least 50% shorter than an at least 15 minute cycle time for performing the heating and the maintaining for an aluminum alloy product prepared without quenching the rolled product after the hot rolling step.
14. The method of claim 1 , further comprising forming the aluminum alloy product after the maintaining at a temperature of from 400° C. to 580° C.
15. A method of producing an aluminum alloy product comprising:
casting a heat treatable aluminum alloy to form a cast aluminum alloy;
optionally heating the cast aluminum alloy;
hot rolling the cast aluminum alloy to produce a rolled product, wherein the hot rolling is performed in a hot rolling mill comprising a plurality of stands, wherein each stand is followed by a quenching system;
quenching the rolled product upon exit from at least one stand in the plurality of stands in the hot rolling step at a quench rate of from about 10° C./s to about 1000° C./s, wherein the quenching is performed rolling the cast aluminum alloys;
optionally cold rolling the rolled product; and
coiling the rolled product to provide an aluminum alloy product
wherein the aluminum alloy product is in F* or W temper.