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Microstructure-property relationships in Al-Cu-Li-Ag-Mg Weldalite (tm) alloys, part 2The microstructure and mechanical properties of the ultrahigh strength Al-Cu-Li-Ag-Mg alloy, Weldalite (tm) 049, were studied. Specifically, the microstructural features along with tensile strength, weldability, Young's modulus and fracture toughness were studied for Weldalite (tm) 049 type alloys with Li contents ranging from 1.3 to 1.9 wt. pct. The tensile properties of Weldalite 049 and Weldalite 049 reinforced with TiB2 particles fabricated using the XD (tm) process were also evaluated at cryogenic, room, and elevated temperatures. In addition, an experimental alloy, similar in composition to Weldalite 049 but without the Ag+Mg, was fabricated. The microstructure of this alloy was compared with that of Weldalite 049 in the T6 condition to assess the effect of Ag+Mg on nucleation of strengthening phases in the absence of cold work.
Document ID
19910019020
Acquisition Source
Legacy CDMS
Document Type
Other - Collected Works
Authors
Langan, T. J. (Martin Marietta Labs. Baltimore, MD, United States)
Pickens, J. R. (Martin Marietta Labs. Baltimore, MD, United States)
Date Acquired
September 6, 2013
Publication Date
May 1, 1991
Publication Information
Publisher: NASA
Subject Category
Metallic Materials
Report/Patent Number
NASA-CR-4364
MML-TR-90-27C-PT-2
NAS 1.26:4364
Report Number: NASA-CR-4364
Report Number: MML-TR-90-27C-PT-2
Report Number: NAS 1.26:4364
Accession Number
91N28334
Funding Number(s)
PROJECT: RTOP 505-63-50-02
CONTRACT_GRANT: NAS1-18531
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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