Actions for Mechanical and microstructural response of Ni sub 3 Al at high strain rate and elevated temperatures [electronic resource].

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Mechanical and microstructural response of Ni sub 3 Al at high strain rate and elevated temperatures [electronic resource].

Published
Washington, D.C : United States. Dept. of Energy. Office of the Assistant Secretary for Defense Programs, 1990.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: (12 pages) : digital, PDF file
Additional Creators
Los Alamos National Laboratory, United States. Department of Energy. Office of the Assistant Secretary for Defense Programs, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
In this paper, the effect of strain rate and temperature on the substructure evolution and mechanical response of Ni₃Al will be presented. The strain rate response of Ni₃Al was studied at strain rates from 10{sup −3} s{sup −1} (quasi-static) to 10⁴ s{sup −1} using a Split Hopkinson Pressure Bar. The Hopkinson Bar tests were conducted at temperatures ranging from 77K to 1273K. At high strain rates the flow strength increased significantly with increasing temperature, similar to the behavior observed at quasi-static rates. The work hardening rates increased with strain rate and varied with temperatures. The work hardening rates, appeared to be significantly higher than those found for Ni270. The substructure evolution was characterized utilizing TEM. The defect generation and rate sensitivity of Ni₃Al are also discussed as a function of strain rate and temperature. 15 refs., 4 figs.
Report Numbers
E 1.99:la-ur-90-2801
E 1.99: conf-900818--4
conf-900818--4
la-ur-90-2801
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Note
Published through SciTech Connect.
01/01/1990.
"la-ur-90-2801"
" conf-900818--4"
"DE90016489"
International conference on shock wave and high-strain-rate phenomena in materials, San Diego, CA (USA), 12-17 Aug 1990.
Gray, G.T. III.; Sizek, H.W.
Funding Information
W-7405-ENG-36
View MARC record | catkey: 14458224