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Transmission electron microscopy characterization of microstructural features in aluminum-lithium-copper alloysA transmission electron microscopy (TEM) examination of aluminum-lithium-copper alloys was conducted. The principal purpose is to characterize the nature, size, and distribution of stringer particles which result from the powder metallurgy (P/M) processing of these alloys. Microstructural features associated with the stringer particles are reported that help explain the stress corrosion susceptibility of the powder metallurgy-processed Al-Li-Cu alloys. In addition, matrix precipitaton events are documented for a variety of heat treatments and process variations. Hot rolling is observed to significantly alter the nature of matrix precipitation, and the observations are correlated with concomitant mechanical property variations.
Document ID
19850044966
Document Type
Conference Paper
Authors
Avalos-Borja, M. (Stanford Joint Inst. for Surface and Microstructural Research Moffett Field, CA, United States)
Larson, L. A. (NASA Ames Research Center; Stanford Joint Institute for Surface and Microstructure Research Moffett Field, CA, United States)
Pizzo, P. P. (San Jose State University San Jose, CA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1984
Subject Category
METALLIC MATERIALS
Meeting Information
Aluminum-lithium alloys II(Monterey, CA)
Distribution Limits
Public
Copyright
Other