NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Effect of swaging on the 1000 C compressive slow plastic flow characteristics of the directionally solidified eutectic alloy gamma/gamma prime-alphaSwaging between 750 and 1050 C has been investigated as a means to introduce work into the directionally solidified eutectic alloy gamma/gamma prime-alpha (Ni-32.3 wt percent Mo-6.3 wt percent Al) and increase the elevated temperature creep strength. The 1000 C slow plastic compressive flow stress-strain rate properties in air of as-grown, annealed, and worked nominally 10 and 25 percent materials have been determined. Swaging did not improve the slow plastic behavior. In fact large reductions tended to degrade the strength and produced a change in the deformation mechanism from uniform flow to one involving intense slip band formation. Comparison of 1000 C tensile and compressive strength-strain rate data reveals that deformation is independent of the stress state.
Document ID
19830063122
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Whittenberger, J. D. (NASA Lewis Research Center Cleveland, OH, United States)
Wirth, G. (Deutsche Forschungs- und Versuchsanstalt fuer Luft- und Raumfahrt Cologne, Germany)
Date Acquired
August 11, 2013
Publication Date
September 1, 1983
Publication Information
Publication: Journal of Materials Science
Volume: 18
ISSN: 0022-2461
Subject Category
METALLIC MATERIALS
Distribution Limits
Public
Copyright
Other