Temperature Dependence of the Mechanical Properties of Equiatomic Solid Solution Alloys with FCC Crystal Structures

Wu, Zhenggang; Bei, Hongbin; Pharr, George M.; George, Easo P.

doi:10.1016/j.actamat.2014.08.026

Title: Temperature Dependence of the Mechanical Properties of Equiatomic Solid Solution Alloys with FCC Crystal Structures

Journal Article · Fri Oct 03 00:00:00 EDT 2014 · Acta Materialia

DOI:https://doi.org/10.1016/j.actamat.2014.08.026· OSTI ID:1162079

Wu, Zhenggang ^[1]; Bei, Hongbin ^[2]; Pharr, George M. ^[3]; George, Easo P. ^[3]

Univ. of Tennessee, Knoxville, TN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

We found that compared to decades-old theories of strengthening in dilute solid solutions, the mechanical behavior of concentrated solid solutions is relatively poorly understood. A special subset of these materials includes alloys in which the constituent elements are present in equal atomic proportions, including the high-entropy alloys of recent interest. A unique characteristic of equiatomic alloys is the absence of “solvent” and “solute” atoms, resulting in a breakdown of the textbook picture of dislocations moving through a solvent lattice and encountering discrete solute obstacles. Likewise, to clarify the mechanical behavior of this interesting new class of materials, we investigate here a family of equiatomic binary, ternary and quaternary alloys based on the elements Fe, Ni, Co, Cr and Mn that were previously shown to be single-phase face-centered cubic (fcc) solid solutions. The alloys were arc-melted, drop-cast, homogenized, cold-rolled and recrystallized to produce equiaxed microstructures with comparable grain sizes. Tensile tests were performed at an engineering strain rate of 10^-3 s^-1 at temperatures in the range 77–673 K. Unalloyed fcc Ni was processed similarly and tested for comparison. The flow stresses depend to varying degrees on temperature, with some (e.g. NiCoCr, NiCoCrMn and FeNiCoCr) exhibiting yield and ultimate strengths that increase strongly with decreasing temperature, while others (e.g. NiCo and Ni) exhibit very weak temperature dependencies. Moreover, to better understand this behavior, the temperature dependencies of the yield strength and strain hardening were analyzed separately. Lattice friction appears to be the predominant component of the temperature-dependent yield stress, possibly because the Peierls barrier height decreases with increasing temperature due to a thermally induced increase of dislocation width. In the early stages of plastic flow (5–13% strain, depending on material), the temperature dependence of strain hardening is due mainly to the temperature dependence of the shear modulus. In all the equiatomic alloys, ductility and strength increase with decreasing temperature down to 77 K. Keywords

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1162079

Journal Information:: Acta Materialia, Vol. 81; ISSN 1359-6454

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 1125 works

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Enhanced void swelling in NiCoFeCrPd high-entropy alloy by indentation-induced dislocations Lu, Chenyang; Yang, Taini; Jin, Ke Materials Research Letters, Vol. 6, Issue 10 https://doi.org/10.1080/21663831.2018.1504136	journal	August 2018
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Microstructure and Mechanical Properties of Gas Tungsten Arc Welded High Manganese Steel Sheet Park, Geon-Woo; Jo, Haeju; Park, Minha Metals, Vol. 9, Issue 11 https://doi.org/10.3390/met9111167	journal	October 2019
Phase Transition of As-Milled and Annealed CrCuFeMnNi High-Entropy Alloy Powder Zhao, Rui-Feng; Ren, Bo; Zhang, Guo-Peng Nano, Vol. 13, Issue 09 https://doi.org/10.1142/s179329201850100x	journal	September 2018
Prediction of the Composition and Hardness of High-Entropy Alloys by Machine Learning Chang, Yao-Jen; Jui, Chia-Yung; Lee, Wen-Jay JOM, Vol. 71, Issue 10 https://doi.org/10.1007/s11837-019-03704-4	journal	July 2019
Dynamically reinforced heterogeneous grain structure prolongs ductility in a medium-entropy alloy with gigapascal yield strength Yang, Muxin; Yan, Dingshun; Yuan, Fuping Proceedings of the National Academy of Sciences, Vol. 115, Issue 28 https://doi.org/10.1073/pnas.1807817115	journal	June 2018
Influence of Annealing on Microstructure and Mechanical Properties of a Nanocrystalline CrCoNi Medium-Entropy Alloy Schuh, Benjamin; Völker, Bernhard; Todt, Juraj Materials, Vol. 11, Issue 5 https://doi.org/10.3390/ma11050662	journal	April 2018
Delayed damage accumulation by athermal suppression of defect production in concentrated solid solution alloys Velişa, G.; Wendler, E.; Zhao, S. Materials Research Letters, Vol. 6, Issue 2 https://doi.org/10.1080/21663831.2017.1410863	journal	December 2017
A high-entropy alloy with hierarchical nanoprecipitates and ultrahigh strength Fu, Zhiqiang; Jiang, Lin; Wardini, Jenna L. Science Advances, Vol. 4, Issue 10 https://doi.org/10.1126/sciadv.aat8712	journal	October 2018
Peierls barrier characteristic and anomalous strain hardening provoked by dynamic-strain-aging strengthening in a body-centered-cubic high-entropy alloy Chen, S. Y.; Wang, L.; Li, W. D. Materials Research Letters, Vol. 7, Issue 12 https://doi.org/10.1080/21663831.2019.1658233	journal	August 2019
Tailoring the physical properties of Ni-based single-phase equiatomic alloys by modifying the chemical complexity Jin, K.; Sales, B. C.; Stocks, G. M. Scientific Reports, Vol. 6, Issue 1 https://doi.org/10.1038/srep20159	journal	February 2016
Creep resistance and strain-rate sensitivity of a CoCrFeNiAl _0.3 high-entropy alloy by nanoindentation Ma, S. G. Materials Research Express, Vol. 6, Issue 12 https://doi.org/10.1088/2053-1591/ab52c7	journal	November 2019
Microstructure and Mechanical Properties of High-Entropy Alloy Co20Cr26Fe20Mn20Ni14 Processed by High-Pressure Torsion at 77 K and 300 K Moon, Jongun; Qi, Yuanshen; Tabachnikova, Elena Scientific Reports, Vol. 8, Issue 1 https://doi.org/10.1038/s41598-018-29446-y	journal	July 2018
Nanomechanical behavior and structural stability of a nanocrystalline CoCrFeNiMn high-entropy alloy processed by high-pressure torsion Lee, Dong-Hyun; Choi, In-Chul; Seok, Moo-Young Journal of Materials Research, Vol. 30, Issue 18 https://doi.org/10.1557/jmr.2015.239	journal	August 2015
Grain boundary decohesion by nanoclustering Ni and Cr separately in CrMnFeCoNi high-entropy alloys Ming, Kaisheng; Li, Linlin; Li, Zhiming Science Advances, Vol. 5, Issue 12 https://doi.org/10.1126/sciadv.aay0639	journal	December 2019
Magnetically-driven phase transformation strengthening in high entropy alloys Niu, Changning; LaRosa, Carlyn R.; Miao, Jiashi Nature Communications, Vol. 9, Issue 1 https://doi.org/10.1038/s41467-018-03846-0	journal	April 2018
Exceptional damage-tolerance of a medium-entropy alloy CrCoNi at cryogenic temperatures Gludovatz, Bernd; Hohenwarter, Anton; Thurston, Keli V. S. arXiv https://doi.org/10.48550/arxiv.1602.01155	text	January 2016
Influence of compositional complexity on interdiffusion in Ni-containing concentrated solid-solution alloys Jin, Ke; Zhang, Chuan; Zhang, Fan Materials Research Letters, Vol. 6, Issue 5 https://doi.org/10.1080/21663831.2018.1446466	journal	March 2018
Microstructure transition and mechanical property variation of Al _0.6 CoCrFeNi high-entropy alloys prepared under different cooling rates Ma, Lili; Cao, Tangqing; Wang, Jianing Materials Research Express, Vol. 6, Issue 10 https://doi.org/10.1088/2053-1591/ab3ef3	journal	September 2019
High-Pressure Induced Phase Transitions in High-Entropy Alloys: A Review Zhang, Fei; Lou, Hongbo; Cheng, Benyuan Entropy, Vol. 21, Issue 3 https://doi.org/10.3390/e21030239	journal	March 2019
Hidden Mn magnetic-moment disorder and its influence on the physical properties of medium-entropy NiCoMn solid solution alloys Mu, Sai; Yin, J.; Samolyuk, G. D. Physical Review Materials, Vol. 3, Issue 1 https://doi.org/10.1103/physrevmaterials.3.014411	journal	January 2019
Novel Co-rich high entropy alloys with superior tensile properties Wei, Daixiu; Li, Xiaoqing; Heng, Weicheng Materials Research Letters, Vol. 7, Issue 2 https://doi.org/10.1080/21663831.2018.1553803	journal	December 2018
Phase composition and microhardness of the as-cast and long-time annealed Co _x Ni _2−x CrFeTi multi-component alloys Lu, Jian; Wu, Changjun; Zeng, Jiaofeng Materials Research Express, Vol. 6, Issue 5 https://doi.org/10.1088/2053-1591/ab0398	journal	February 2019
Processing, Microstructure and Mechanical Properties of the CrMnFeCoNi High-Entropy Alloy Gludovatz, Bernd; George, Easo P.; Ritchie, Robert O. JOM, Vol. 67, Issue 10 https://doi.org/10.1007/s11837-015-1589-z	journal	August 2015
Tailoring heterogeneities in high-entropy alloys to promote strength–ductility synergy Ma, Evan; Wu, Xiaolei Nature Communications, Vol. 10, Issue 1 https://doi.org/10.1038/s41467-019-13311-1	journal	December 2019
Thermo-mechanical response of single-phase face-centered-cubic Al _x CoCrFeNi high-entropy alloy microcrystals Jiao, Quan; Sim, Gi-Dong; Komarasamy, Mageshwari Materials Research Letters, Vol. 6, Issue 5 https://doi.org/10.1080/21663831.2018.1446468	journal	March 2018
A simplified model connecting lattice distortion with friction stress of Nb-based equiatomic high-entropy alloys Zhao, Y. Y.; Lei, Z. F.; Lu, Z. P. Materials Research Letters, Vol. 7, Issue 8 https://doi.org/10.1080/21663831.2019.1610105	journal	April 2019
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Dislocation mechanisms and 3D twin architectures generate exceptional strength-ductility-toughness combination in CrCoNi medium-entropy alloy Zhang, Zijiao; Sheng, Hongwei; Wang, Zhangjie Nature Communications, Vol. 8, Issue 1 https://doi.org/10.1038/ncomms14390	journal	February 2017
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A new constitutive relation for simulating plastic flow involving continuous-shear or shear-localisation during metal cutting Gurusamy, Murali Mohan; Rao, Balkrishna C. Philosophical Magazine, Vol. 100, Issue 4 https://doi.org/10.1080/14786435.2019.1696023	journal	December 2019
Influence of Annealing on Microstructure and Mechanical Properties of a Nanocrystalline CrCoNi Medium-Entropy Alloy Schuh, Benjamin; Völker, Bernhard; Todt, Juraj Deutsches Elektronen-Synchrotron, DESY, Hamburg https://doi.org/10.3204/pubdb-2018-01848	text	January 2018
Enhanced strength and ductility of a tungsten-doped CoCrNi medium-entropy alloy Wu, Zhenggang; Guo, Wei; Jin, Ke Journal of Materials Research, Vol. 33, Issue 19 https://doi.org/10.1557/jmr.2018.247	journal	July 2018
Anomalous Evolution of Strength and Microstructure of High‐Entropy Alloy CoCrFeNiMn after High‐Pressure Torsion at 300 and 77 K Podolskiy, Aleksey V.; Shapovalov, Yuriy O.; Tabachnikova, Elena D. Advanced Engineering Materials, Vol. 22, Issue 1 https://doi.org/10.1002/adem.201900752	journal	August 2019
Effects of Tungsten-Carbide Particle Addition on Friction-Stir-Processed Fe50(CoCrMnNi)50 Medium-Entropy Alloy Nugroho, Janu Ageng; Jodi, Dennis Edgard; Park, Nokeun JOM, Vol. 71, Issue 10 https://doi.org/10.1007/s11837-019-03719-x	journal	August 2019
Multicomponent intermetallic nanoparticles and superb mechanical behaviors of complex alloys Yang, T.; Zhao, Y. L.; Tong, Y. Science, Vol. 362, Issue 6417 https://doi.org/10.1126/science.aas8815	journal	November 2018
Slurry Erosion Behavior of AlxCoCrFeNiTi0.5 High-Entropy Alloy Coatings Fabricated by Laser Cladding Zhao, Jianhua; Ma, Aibin; Ji, Xiulin Metals, Vol. 8, Issue 2 https://doi.org/10.3390/met8020126	journal	February 2018
On the mechanical response and microstructure evolution of NiCoCr single crystalline medium entropy alloys Uzer, Benay; Picak, S.; Liu, J. Materials Research Letters, Vol. 6, Issue 8 https://doi.org/10.1080/21663831.2018.1478331	journal	June 2018
Intermediate-Temperature Creep Deformation and Microstructural Evolution of an Equiatomic FCC-Structured CoCrFeNiMn High-Entropy Alloy Cao, Chengming; Fu, Jianxin; Tong, Tongwei Entropy, Vol. 20, Issue 12 https://doi.org/10.3390/e20120960	journal	December 2018
Solute-strengthening in elastically anisotropic fcc alloys Nag, Shankha; Varvenne, Céline; Curtin, William A. Modelling and Simulation in Materials Science and Engineering, Vol. 28, Issue 2 https://doi.org/10.1088/1361-651x/ab60e0	journal	January 2020
Effect of Atomic Size Difference on the Microstructure and Mechanical Properties of High-Entropy Alloys Wu, Chan-Sheng; Tsai, Ping-Hsiu; Kuo, Chia-Ming Entropy, Vol. 20, Issue 12 https://doi.org/10.3390/e20120967	journal	December 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
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Combining experiments and modeling to explore the solid solution strengthening of high and medium entropy alloys Bracq, G.; Laurent-Brocq, M.; Varvenne, C. Acta Materialia, Vol. 177 https://doi.org/10.1016/j.actamat.2019.06.050	journal	September 2019
Yield strength and misfit volumes of NiCoCr and implications for short-range-order Yin, Binglun; Yoshida, Shuhei; Tsuji, Nobuhiro Nature Communications, Vol. 11, Issue 1 https://doi.org/10.1038/s41467-020-16083-1	journal	May 2020
Hierarchical Eutectoid Nano-lamellar Decomposition in an Al0.3CoFeNi Complex Concentrated Alloy Dasari, Sriswaroop; Gwalani, Bharat; Jagetia, Abhinav Scientific Reports, Vol. 10, Issue 1 https://doi.org/10.1038/s41598-020-61538-6	journal	March 2020
The Stability and Elasticity in Ta-Ti-V Medium-Entropy Alloys Using First-Principles Calculations Hu, Wenqiang; Pan, Min; Huang, Zheng Frontiers in Materials, Vol. 8 https://doi.org/10.3389/fmats.2021.651435	journal	May 2021
Machine Learning and Data Analytics for Design and Manufacturing of High-Entropy Materials Exhibiting Mechanical or Fatigue Properties of Interest Steingrimsson, Baldur; Fan, Xuesong; Kulkarni, Anand arXiv https://doi.org/10.48550/arxiv.2012.07583	text	January 2020
Mechanical behavior of high-entropy alloys: A review Shang, Yuanyuan; Brechtl, Jamieson; Psitidda, Claudio arXiv https://doi.org/10.48550/arxiv.2102.09055	preprint	January 2021
Incorporation of Si atoms into CrCoNiFe high-entropy alloy: a DFT study Aravindh, S. Assa; Kistanov, Andrey A.; Alatalo, Matti arXiv https://doi.org/10.48550/arxiv.2103.07322	text	January 2021

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