NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Structure and properties during aging of an ultra-high strength Al-Cu-Li-Ag-Mg alloyThe structure and properties of the strengthening phases formed during aging in an Al-Cu-Li-Ag-Mg alloy (Weldalite 049) were elulcidated, by following the development of the microstructure by means of TEM. The results of observations showed that the Weldalite 049 alloy has a series of unusual and technologically useful combinations of mechanical properties in different aging conditions, such as natural aging without prior cold work to produce high strengths, a reversion temper of lower yield strength and unusually high ductility, a room temperature reaging of the reversion temper eventually leading to the original T4 hardness, and ultrahigh-strength T6 properties.
Document ID
19900036128
Document Type
Reprint (Version printed in journal)
Authors
Gayle, Frank W. (NIST, Metallurgy Div., Gaithersburg MD, United States)
Heubaum, Frank H. (National Inst. of Standards and Technology Gaithersburg, MD, United States)
Pickens, Joseph R. (Martin Marietta Laboratories Baltimore, MD, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1990
Publication Information
Publication: Scripta Metallurgica et Materialia
Volume: 24
ISSN: 0956-716X
Subject Category
METALLIC MATERIALS
Funding Number(s)
CONTRACT_GRANT: NAS1-18531
Distribution Limits
Public
Copyright
Other