A precipitation-hardened high-entropy alloy with outstanding tensile properties

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.

doi:10.1016/j.actamat.2015.08.076

Title: A precipitation-hardened high-entropy alloy with outstanding tensile properties

Journal Article · Tue Sep 29 00:00:00 EDT 2015 · Acta Materialia

DOI:https://doi.org/10.1016/j.actamat.2015.08.076· OSTI ID:1352752

He, J. Y. ^[1]; Wang, H. ^[1]; Huang, H. L. ^[1]; Xu, X. D. ^[2]; Chen, M. W. ^[2]; Wu, Y. ^[1]; Liu, X. J. ^[1]; Nieh, T. G. ^[3]; An, K. ^[4];

^[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)

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.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1352752

Alternate ID(s):: OSTI ID: 1358697

Journal Information:: Acta Materialia, Vol. 102, Issue C; ISSN 1359-6454

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 1193 works

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Mechanical Properties and Microstructure of a NiCrFeCoMn High-Entropy Alloy Deformed at High Strain Rates Wang, Bingfeng; Yao, Xianrui; Wang, Chu Entropy, Vol. 20, Issue 11 https://doi.org/10.3390/e20110892	journal	November 2018
High Strength and Deformation Mechanisms of Al0.3CoCrFeNi High-Entropy Alloy Thin Films Fabricated by Magnetron Sputtering Liao, Wei-Bing; Zhang, Hongti; Liu, Zhi-Yuan Entropy, Vol. 21, Issue 2 https://doi.org/10.3390/e21020146	journal	February 2019
Corrosion Behavior of Selectively Laser Melted CoCrFeMnNi High Entropy Alloy Ren, Jie; Mahajan, Chaitanya; Liu, Liang Metals, Vol. 9, Issue 10 https://doi.org/10.3390/met9101029	journal	September 2019
Crystallographically degenerate B2 precipitation in a plastically deformed fcc -based complex concentrated alloy Choudhuri, Deep; Shukla, Shivakant; Green, Whitley B. Materials Research Letters, Vol. 6, Issue 3 https://doi.org/10.1080/21663831.2018.1426649	journal	December 2017
Development and Microstructural Characterization of a New Wrought High Entropy Superalloy Shafiee, Ahad; Nili-Ahmadabadi, Mahmoud; Kim, Hyoung Seop Metals and Materials International, Vol. 26, Issue 5 https://doi.org/10.1007/s12540-019-00360-w	journal	July 2019
Current and emerging practices of CALPHAD toward the development of high entropy alloys and complex concentrated alloys Gorsse, Stéphane; Tancret, Franck Journal of Materials Research, Vol. 33, Issue 19 https://doi.org/10.1557/jmr.2018.152	journal	June 2018
A thermodynamic study of corrosion behaviors for CoCrFeNi-based high-entropy alloys Zhang, Boliang; Zhang, Yi; Guo, S. M. Journal of Materials Science, Vol. 53, Issue 20 https://doi.org/10.1007/s10853-018-2652-2	journal	July 2018
Elasticity of high-entropy alloys from ab initio theory Huang, Shuo; Tian, Fuyang; Vitos, Levente Journal of Materials Research, Vol. 33, Issue 19 https://doi.org/10.1557/jmr.2018.237	journal	August 2018
Gradient Distribution of Microstructures and Mechanical Properties in a FeCoCrNiMo High-Entropy Alloy during Spark Plasma Sintering Zhang, Mingyang; Peng, Yingbo; Zhang, Wei Metals, Vol. 9, Issue 3 https://doi.org/10.3390/met9030351	journal	March 2019
Microstructural evolution and mechanical properties of laser-welded joints of medium manganese steel Cao, Yang; Luo, Chong; Zhao, Lin Journal of Iron and Steel Research International https://doi.org/10.1007/s42243-019-00293-z	journal	July 2019
From High-Manganese Steels to Advanced High-Entropy Alloys Haase, Christian; Barrales Mora, Luis Antonio RWTH Aachen University https://doi.org/10.18154/rwth-2019-08369	text	January 2019
Optimizing mechanical properties of Fe26.7Co26.7Ni26.7Si8.9B11 high entropy alloy by inducing hypoeutectic to quasi-duplex microstructural transition Zhang, Ze-Qun; Song, Kai-Kai; Guo, Shu RWTH Aachen University https://doi.org/10.18154/rwth-2020-04183	text	January 2019
Design and tensile properties of a bcc Ti-rich high-entropy alloy with transformation-induced plasticity Lilensten, Lola; Couzinié, Jean-Philippe; Bourgon, Julie Materials Research Letters, Vol. 5, Issue 2 https://doi.org/10.1080/21663831.2016.1221861	journal	August 2016
Selective laser melting enabling the hierarchically heterogeneous microstructure and excellent mechanical properties in an interstitial solute strengthened high entropy alloy Zhu, Z. G.; An, X. H.; Lu, W. J. Taylor & Francis https://doi.org/10.6084/m9.figshare.9247094.v1	text	January 2019
Extraordinary tensile properties of titanium alloy with heterogeneous phase-distribution based on hetero-deformation induced hardening Cao, Yuankui; Zhang, Weidong; Liu, Bin Taylor & Francis https://doi.org/10.6084/m9.figshare.12129144.v1	text	January 2020
Design and tensile properties of a bcc Ti-rich high-entropy alloy with transformation-induced plasticity Lilensten, Lola; Couzinié, Jean-Philippe; Bourgon, Julie Taylor & Francis https://doi.org/10.6084/m9.figshare.3799005	text	January 2016
Crystallographically degenerate B2 precipitation in a plastically deformed fcc-based complex concentrated alloy Choudhuri, Deep; Shukla, Shivakant; Green, Whitley B. Taylor & Francis https://doi.org/10.6084/m9.figshare.5822160.v1	text	January 2018
Selective laser melting enabling the hierarchically heterogeneous microstructure and excellent mechanical properties in an interstitial solute strengthened high entropy alloy Zhu, Z. G.; An, X. H.; Lu, W. J. Taylor & Francis https://doi.org/10.6084/m9.figshare.9247094	text	January 2019

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Title: A precipitation-hardened high-entropy alloy with outstanding tensile properties

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