Heat treatment of precipitation hardening alloys

Details Heat treatment of precipitation hardening alloys Heat treatment of precipitation hardening alloys

1989-06-13

1992-04-28

Dean, R.

Metal treatment

Compositions

Heat treating

148159, 148405, 148417, C22F 104

Patent

active

051085208

ABSTRACT:
An aging process for solution-heat-treated, precipitation hardening metal alloy includes first underaging the alloy, such that a yield strength below peak yield strength is obtained, followed by higher aging for improving the corrosion resistance of the alloy, followed by lower temperature aging to strength increased over that achieved initially.

REFERENCES:
patent: 3881966 (1975-05-01), Staley et al.
patent: 4477292 (1984-10-01), Brown
patent: 4832758 (1989-05-01), Brown
"Investigation to Improve Stress-Corrosion Resistance of Aluminum Aircraft Alloys Through Alloy Additions and Specialized Heat Treatment", J. T. Staley, Naval Air Systems Command Contract N00019-68-C-0146 (Final Report), Feb. 28, 1969.

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