Effect of cold rolling on the microstructure and mechanical properties of Al0.25CoCrFe1.25Ni1.25 high-entropy alloy
Abstract
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. Here, the phase relation and the mixing properties of Gibbs free energy, enthalpy and entropy of AlxCoCrFe1.25Ni1.25 were predicted using the CALPHAD method.
- Authors:
-
- Taiyuan Univ. of Technology, Taiyuan (China)
- National Energy Technology Lab. (NETL), Albany, OR (United States); AECOM Corp., Albany, OR (United States)
- National Energy Technology Lab. (NETL), Albany, OR (United States)
- Publication Date:
- Research Org.:
- National Energy Technology Lab. (NETL), Albany, OR (United States); National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States); National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV, and Albany, OR (United States)
- Sponsoring Org.:
- USDOE Office of Fossil Energy (FE)
- OSTI Identifier:
- 1258469
- Alternate Identifier(s):
- OSTI ID: 1258466; OSTI ID: 1797371
- Report Number(s):
- A-CONTR-PUB-054; A-CONTR-PUB-055
Journal ID: ISSN 0921-5093; PII: 788
- Grant/Contract Number:
- FE0004000; 51371122; 2015021005; 51401141; 2013-Z03; 2014021017-3; 11390362
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
- Additional Journal Information:
- Journal Volume: 645; Journal Issue: C; Journal ID: ISSN 0921-5093
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; High-entropy alloys; Cold-rolling; Mechanical characterization; Fracture; CALPHAD; high-entropy alloys; cold-rolling; mechanical characterization; fracture
Citation Formats
Wang, Z., Gao, M. C., Ma, S. G., Yang, H. J., Wang, Z. H., Ziomek-Moroz, M., and Qiao, J. W. Effect of cold rolling on the microstructure and mechanical properties of Al0.25CoCrFe1.25Ni1.25 high-entropy alloy. United States: N. p., 2015.
Web. doi:10.1016/j.msea.2015.07.088.
Wang, Z., Gao, M. C., Ma, S. G., Yang, H. J., Wang, Z. H., Ziomek-Moroz, M., & Qiao, J. W. Effect of cold rolling on the microstructure and mechanical properties of Al0.25CoCrFe1.25Ni1.25 high-entropy alloy. United States. https://doi.org/10.1016/j.msea.2015.07.088
Wang, Z., Gao, M. C., Ma, S. G., Yang, H. J., Wang, Z. H., Ziomek-Moroz, M., and Qiao, J. W. Wed .
"Effect of cold rolling on the microstructure and mechanical properties of Al0.25CoCrFe1.25Ni1.25 high-entropy alloy". United States. https://doi.org/10.1016/j.msea.2015.07.088. https://www.osti.gov/servlets/purl/1258469.
@article{osti_1258469,
title = {Effect of cold rolling on the microstructure and mechanical properties of Al0.25CoCrFe1.25Ni1.25 high-entropy alloy},
author = {Wang, Z. and Gao, M. C. and Ma, S. G. and Yang, H. J. and Wang, Z. H. and Ziomek-Moroz, M. and Qiao, J. W.},
abstractNote = {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. Here, the phase relation and the mixing properties of Gibbs free energy, enthalpy and entropy of AlxCoCrFe1.25Ni1.25 were predicted using the CALPHAD method.},
doi = {10.1016/j.msea.2015.07.088},
journal = {Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing},
number = C,
volume = 645,
place = {United States},
year = {Wed Aug 05 00:00:00 EDT 2015},
month = {Wed Aug 05 00:00:00 EDT 2015}
}
Web of Science
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