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Utilizing various test methods to study the stress corrosion behavior of Al-Li-Cu alloysRecently, much attention has been given to aluminum-lithium alloys because of rather substantial specific-strength and specific-stiffness advantages offered over commercial 2000and 7000-series aluminum alloys. An obstacle to Al-Li alloy development has been inherent limited ductility. In order to obtain a more refined microstructure, powder metallurgy (P/M) has been employed in alloy development programs. As stress corrosion (SC) of high-strength aluminum alloys has been a major problem in the aircraft industry, the possibility of an employment of Al-Li alloys has been considered, taking into account a use of Al-Li-Cu alloys. Attention is given to a research program concerned with the evaluation of the relative SC resistance of two P/M processed Al-Li-Cu alloys. The behavior of the alloys, with and without an addition of magnesium, was studied with the aid of three test methods. The susceptibility to SC was found to depend on the microstructure of the alloys.
Document ID
19850051484
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Pizzo, P. P.
(San Jose State University San Jose, CA, United States)
Galvin, R. P.
(Foothill-De Anza Community College Los Altos Hills, CA, United States)
Nelson, H. G.
(NASA Ames Research Center Materials Test Engineering Branch, Moffett Field, CA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1984
Subject Category
Metallic Materials
Accession Number
85A33635
Funding Number(s)
CONTRACT_GRANT: NAS2-10365
CONTRACT_GRANT: NCC2-155
Distribution Limits
Public
Copyright
Other

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