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Aqueous sodium chloride induced intergranular corrosion of Al-Li-Cu alloysTwo methods have been explored to assess the susceptibility of Al-Li-Cu alloys to intergranular corrosion in aqueous sodium chloride solution. They are: (1) constant extension rate testing with and without alternate-immersion preexposure and (2) metallographic examination after exposure to a NaCl-H2O2 corrosive solution per Mil-H-6088F. Intergranular corrosion was found to occur in both powder and ingot metallurgy alloys of similar composition, using both methods. Underaging rendered the alloys most susceptible. The results correlate to stress-corrosion data generated in conventional time-to-failure and crack growth-rate tests. Alternate-immersion preexposure may be a reliable means to assess stress corrosion susceptibility of Al-Li-Cu alloys.
Document ID
19870065421
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Pizzo, P. P.
(San Jose State Univ. CA, United States)
Daeschner, D. L.
(San Jose State University CA, United States)
Date Acquired
August 13, 2013
Publication Date
January 1, 1986
Subject Category
Metallic Materials
Accession Number
87A52695
Funding Number(s)
CONTRACT_GRANT: NCC2-155
Distribution Limits
Public
Copyright
Other

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