Accelerated solution treatment process for aluminum alloys

Details Accelerated solution treatment process for aluminum alloys Accelerated solution treatment process for aluminum alloys

2011-06-28

2011-06-28

King, Roy (Department: 1733)

Metal treatment

Process of modifying or maintaining internal physical...

Utilizing disclosed mathematical formula or relationship

C148S698000

Reexamination Certificate

active

07967925

ABSTRACT:
A method of providing solution heat treatment to an aluminum alloy. A non-isothermal process is used to provide a faster heat treatment cycle time while maintaining or further improving the alloy mechanical properties after subsequent aging hardening. The process includes establishing a temperature inside a processing vessel that is greater than a soaking temperature but less than a liquidus temperature of the alloy, rapidly heating the alloy to the soaking temperature in a first heating operation, reducing the temperature inside of the processing vessel to the soaking temperature, then heating the alloy to a temperature above the soaking temperature through a gradually increasing temperature in a second heating operation. Protocols for the improved solution heat treatment may be based on one or more of computational thermodynamics, dissolution kinetics and coarsening kinetics.

REFERENCES:
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Sigli, C. “Nucleation, Growth and Coarsening of Spherical Precipitates in Aluminum Alloys”. ICAA&, 7th International Conference on Aluminum Alloys, Apr. 2000.
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Sigli, C.; Nucleation, Growth and Coarsening of Spherical Precipitates in Aluminum Alloys; 7th International Conference on Aluminum Alloys; Apr. 2000.

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