A precipitation-hardened high-entropy alloy with outstanding tensile properties
Abstract
Recent studies indicated that high-entropy alloys (HEAs) possess unusual structural and thermal features, which could greatly affect dislocation motion and contribute to the mechanical performance, however, a HEA matrix alone is insufficiently strong for engineering applications and other strengthening mechanisms are urgently needed to be incorporated. In this work, we demonstrate the possibility to precipitate nanosized coherent reinforcing phase, i.e., L12-Ni3(Ti,Al), in a fcc-FeCoNiCr HEA matrix using minor additions of Ti and Al. Through thermomechanical processing and microstructure controlling, extraordinary balanced tensile properties at room temperature were achieved, which is due to a well combination of various hardening mechanisms, particularly precipitation hardening. The applicability and validity of the conventional strengthening theories are also discussed. In conclusion, the current work is a successful demonstration of using integrated strengthening approaches to manipulate the properties of fcc-HEA systems, and the resulting findings are important not only for understanding the strengthening mechanisms of metallic materials in general, but also for the future development of high-performance HEAs for industrial applications.
- Authors:
-
[1]
- University of Science and Technology Beijing (China). State Key Laboratory for Advanced Metals and Materials
- Tohoku Univ., Sendai (Japan). Advanced Institute for Materials Research
- Univ. of Tennessee, Knoxville, TN (United States). Department of Materials Science and Engineering
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1352752
- Alternate Identifier(s):
- OSTI ID: 1358697
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Acta Materialia
- Additional Journal Information:
- Journal Volume: 102; Journal Issue: C; Journal ID: ISSN 1359-6454
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; High-entropy alloys; Precipitation hardening; Strengthening mechanisms; Mechanical properties; 3 dimensional atom probe tomography; MECHANICAL-PROPERTIES; NANOCRYSTALLINE NI; STRENGTHENING MECHANISMS; ELEVATED-TEMPERATURES; PRINCIPAL ELEMENTS; GRAIN-GROWTH
Citation Formats
He, J. Y., Wang, H., Huang, H. L., Xu, X. D., Chen, M. W., Wu, Y., Liu, X. J., Nieh, T. G., An, K., and Lu, Z. P. A precipitation-hardened high-entropy alloy with outstanding tensile properties. United States: N. p., 2015.
Web. doi:10.1016/j.actamat.2015.08.076.
He, J. Y., Wang, H., Huang, H. L., Xu, X. D., Chen, M. W., Wu, Y., Liu, X. J., Nieh, T. G., An, K., & Lu, Z. P. A precipitation-hardened high-entropy alloy with outstanding tensile properties. United States. https://doi.org/10.1016/j.actamat.2015.08.076
He, J. Y., Wang, H., Huang, H. L., Xu, X. D., Chen, M. W., Wu, Y., Liu, X. J., Nieh, T. G., An, K., and Lu, Z. P. Tue .
"A precipitation-hardened high-entropy alloy with outstanding tensile properties". United States. https://doi.org/10.1016/j.actamat.2015.08.076. https://www.osti.gov/servlets/purl/1352752.
@article{osti_1352752,
title = {A precipitation-hardened high-entropy alloy with outstanding tensile properties},
author = {He, J. Y. and Wang, H. and Huang, H. L. and Xu, X. D. and Chen, M. W. and Wu, Y. and Liu, X. J. and Nieh, T. G. and An, K. and Lu, Z. P.},
abstractNote = {Recent studies indicated that high-entropy alloys (HEAs) possess unusual structural and thermal features, which could greatly affect dislocation motion and contribute to the mechanical performance, however, a HEA matrix alone is insufficiently strong for engineering applications and other strengthening mechanisms are urgently needed to be incorporated. In this work, we demonstrate the possibility to precipitate nanosized coherent reinforcing phase, i.e., L12-Ni3(Ti,Al), in a fcc-FeCoNiCr HEA matrix using minor additions of Ti and Al. Through thermomechanical processing and microstructure controlling, extraordinary balanced tensile properties at room temperature were achieved, which is due to a well combination of various hardening mechanisms, particularly precipitation hardening. The applicability and validity of the conventional strengthening theories are also discussed. In conclusion, the current work is a successful demonstration of using integrated strengthening approaches to manipulate the properties of fcc-HEA systems, and the resulting findings are important not only for understanding the strengthening mechanisms of metallic materials in general, but also for the future development of high-performance HEAs for industrial applications.},
doi = {10.1016/j.actamat.2015.08.076},
journal = {Acta Materialia},
number = C,
volume = 102,
place = {United States},
year = {Tue Sep 29 00:00:00 EDT 2015},
month = {Tue Sep 29 00:00:00 EDT 2015}
}
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Gradient Distribution of Microstructures and Mechanical Properties in a FeCoCrNiMo High-Entropy Alloy during Spark Plasma Sintering
journal, March 2019
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Microstructural evolution and mechanical properties of laser-welded joints of medium manganese steel
journal, July 2019
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- Journal of Iron and Steel Research International
From High-Manganese Steels to Advanced High-Entropy Alloys
text, January 2019
- Haase, Christian; Barrales Mora, Luis Antonio
- RWTH Aachen University
Optimizing mechanical properties of Fe26.7Co26.7Ni26.7Si8.9B11 high entropy alloy by inducing hypoeutectic to quasi-duplex microstructural transition
text, January 2019
- Zhang, Ze-Qun; Song, Kai-Kai; Guo, Shu
- RWTH Aachen University
Design and tensile properties of a bcc Ti-rich high-entropy alloy with transformation-induced plasticity
journal, August 2016
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Selective laser melting enabling the hierarchically heterogeneous microstructure and excellent mechanical properties in an interstitial solute strengthened high entropy alloy
text, January 2019
- Zhu, Z. G.; An, X. H.; Lu, W. J.
- Taylor & Francis
Extraordinary tensile properties of titanium alloy with heterogeneous phase-distribution based on hetero-deformation induced hardening
text, January 2020
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- Taylor & Francis
Design and tensile properties of a bcc Ti-rich high-entropy alloy with transformation-induced plasticity
text, January 2016
- Lilensten, Lola; Couzinié, Jean-Philippe; Bourgon, Julie
- Taylor & Francis
Crystallographically degenerate B2 precipitation in a plastically deformed fcc-based complex concentrated alloy
text, January 2018
- Choudhuri, Deep; Shukla, Shivakant; Green, Whitley B.
- Taylor & Francis
Selective laser melting enabling the hierarchically heterogeneous microstructure and excellent mechanical properties in an interstitial solute strengthened high entropy alloy
text, January 2019
- Zhu, Z. G.; An, X. H.; Lu, W. J.
- Taylor & Francis
Enhanced strength–ductility synergy in ultrafine-grained eutectic high-entropy alloys by inheriting microstructural lamellae
journal, January 2019
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- Nature Communications, Vol. 10, Issue 1
Effects of strain rate on room- and cryogenic-temperature compressive properties in metastable V10Cr10Fe45Co35 high-entropy alloy
journal, April 2019
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- Scientific Reports, Vol. 9, Issue 1
On the evolving nature of c/a ratio in a hexagonal close-packed epsilon martensite phase in transformative high entropy alloys
journal, September 2019
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- Scientific Reports, Vol. 9, Issue 1
Optimizing mechanical properties of Fe26.7Co26.7Ni26.7Si8.9B11 high entropy alloy by inducing hypoeutectic to quasi-duplex microstructural transition
text, January 2019
- Zhang, Ze-Qun; Song, Kai-Kai; Guo, Shu
- RWTH Aachen University
Microstructure and Mechanical Properties Evolution of the Al, C-Containing CoCrFeNiMn-Type High-Entropy Alloy during Cold Rolling
journal, December 2017
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- Materials, Vol. 11, Issue 1
Effect of Ni/Si Mass Ratio and Thermomechanical Treatment on the Microstructure and Properties of Cu-Ni-Si Alloys
journal, June 2019
- Li, Jiang; Huang, Guojie; Mi, Xujun
- Materials, Vol. 12, Issue 13