Metal treatment – Compositions – Heat treating
Patent
1989-04-14
1991-03-12
Yee, Deborah
Metal treatment
Compositions
Heat treating
148159, 148438, 148439, C22F 104
Patent
active
049990616
ABSTRACT:
The combination of strength and fracture toughness properties of aluminum-lithium alloys are significantly enhanced by underaging the alloys at temperatures ranging from 200.degree. F. to below 305.degree. F. for relatively long periods of time.
REFERENCES:
patent: 4840682 (1989-06-01), Curtis et al.
Curtis R. Eugene
Narayanan G. Hari
Quist William E.
The Boeing Company
Yee Deborah
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