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Effect of cold rolling on the microstructure and mechanical properties of Al<sub>0.25</sub>CoCrFe<sub>1.25</sub>Ni<sub>1.25</sub> high-entropy alloy [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 2015.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description
pages 163-169 : digital, PDF file
Additional Creators
National Energy Technology Laboratory (U.S.), United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Cold rolling can break down the as-cast dendrite microstructure and thus may have pronounced impact on the mechanical behavior of the alloy. In the present study, the effect of cold rolling on the microstructure and mechanical properties of Al0.25CoCrFe1.25Ni1.25 high-entropy alloy in the face-centered cubic structure was investigated. With increasing the thickness reduction from cold rolling, the hardness, the yield strength, and the fracture strength increased at the cost of reducing ductility. At the thickness reduction of 80%, the tensile strength (hardness) was 702 MPa (406 MPa), 1.62 (2.43) times that in the as-cast condition. Compared to traditional alloys, Al0.25CoCrFe1.25Ni1.25 has the highest hardening rate with respect to CR thickness reduction. Lastly, the phase relation and the mixing properties of Gibbs free energy, enthalpy and entropy of AlxCoCrFe1.25Ni1.25 were predicted using the CALPHAD method.
Report Numbers
E 1.99:a-contr-pub--055
a-contr-pub--055
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
08/05/2015.
"a-contr-pub--055"
": S0921509315302409"
Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing 645 C ISSN 0921-5093 AM
Z. Wang; M. C. Gao; S. G. Ma; H. J. Yang; Z. H. Wang; M. Ziomek-Moroz; J. W. Qiao.
Funding Information
51371122
2015021005
51401141
2013-Z03
2014021017-3
11390362
FE-0004000
View MARC record | catkey: 24093519