Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1991-07-12
1993-08-31
Dean, R.
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
148415, 148440, 148702, 420542, C22F 104
Patent
active
052405214
ABSTRACT:
The invention provides a method for heat treating aluminum-base alloys. The method increases stress corrosion resistance after heating of the alloy to temperatures between 100.degree. C. and 150.degree. C. A dispersion strengthened aluminum-base alloy containing lithium and magnesium is shaped to form an object of substantially final form. The dispersion strengthened aluminum-base alloy is heated to a temperature between 160.degree. C. and 250.degree. C. for at least 3 hours. The heat treated object has increased stress corrosion resistance after exposure to temperatures between 100.degree. C. and 150.degree. C.
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Crum James R.
McEwen James
Schelleng Robert D.
Weber John H.
Biederman Blake T.
Dean R.
INCO Alloys International, Inc.
Koehler Robert R.
Steen Edward A.
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