Heat treatment for dispersion strengthened aluminum-base alloy
A method is described for treating mechanically alloyed aluminum base alloys to increase stress corrosion resistance after heating of the aluminum-base alloy to a temperature between about 100 C and 150 C comprising the steps of: shaping a dispersion strengthened aluminum-base alloy consisting essentially of by weight percent about 0.5 to 3 lithium and about 0.5 to 7 magnesium to form an object of substantially final form; and heat treating said object strengthened aluminum-base alloy at a temperature and at least a minimum time sufficient to increase stress corrosion cracking resistance to at least 27 days in accordance with ASTM G44-88 for conditions arising from said dispersion strengthened aluminum-base alloy being exposed to temperatures between about 100 C and 150 C.
- Assignee:
- Inco Alloys International, Inc., Huntington, WV (United States)
- Patent Number(s):
- A; US 5240521
- Application Number:
- PPN: US 7-729473
- OSTI ID:
- 5989930
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360101* -- Metals & Alloys-- Preparation & Fabrication
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
CHEMICAL REACTIONS
CORROSION
CORROSION RESISTANCE
HEAT TREATMENTS
STRESS CORROSION
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K