Mechanical properties, microstructure and thermal stability of a nanocrystalline CoCrFeMnNi high-entropy alloy after severe plastic deformation

Schuh, B.; Mendez-Martin, F.; Völker, B.; George, E. P.; Clemens, H.; Pippan, R.; Hohenwarter, A.

doi:10.1016/j.actamat.2015.06.025

Title: Mechanical properties, microstructure and thermal stability of a nanocrystalline CoCrFeMnNi high-entropy alloy after severe plastic deformation

Journal Article · Tue Sep 01 00:00:00 EDT 2015 · Acta Materialia

DOI:https://doi.org/10.1016/j.actamat.2015.06.025· OSTI ID:1251844

Schuh, B.; Mendez-Martin, F.; Völker, B.; George, E. P.; Clemens, H.; Pippan, R.; Hohenwarter, A.

An equiatomic CoCrFeMnNi high-entropy alloy (HEA), produced by arc melting and drop casting, was subjected to severe plastic deformation (SPD) using high-pressure torsion. This process induced substantial grain refinement in the coarse-grained casting leading to a grain size of approximately 50 nm. As a result, strength increased significantly to 1950 MPa, and hardness to similar to 520 MV. Analyses using transmission electron microscopy (TEM) and 3-dimensional atom probe tomography (3D-APT) showed that, after SPD, the alloy remained a true single-phase solid solution down to the atomic scale. Subsequent investigations characterized the evolution of mechanical properties and microstructure of this nanocrystalline HEA upon annealing. Isochronal (for 1 h) and isothermal heat treatments were performed followed by microhardness and tensile tests. The isochronal anneals led to a marked hardness increase with a maximum hardness of similar to 630 HV at about 450 degrees C before softening set in at higher temperatures. The isothermal anneals, performed at this peak hardness temperature, revealed an additional hardness rise to a maximum of about 910 MV after 100 h. To clarify this unexpected annealing response, comprehensive microstructural analyses were performed using TEM and 3D-APT. New nano-scale phases were observed to form in the originally single-phase HEA. After times as short as 5 min at 450 degrees C, a NiMn phase and Cr-rich phase formed. With increasing annealing time, their volume fractions increased and a third phase, FeCo, also formed. It appears that the surfeit of grain boundaries in the nanocrystalline HEA offer many fast diffusion pathways and nucleation sites to facilitate this phase decomposition. The hardness increase, especially for the longer annealing times, can be attributed to these nano-scaled phases embedded in the HEA matrix. The present results give new valuable insights into the phase stability of single-phase high-entropy alloys as well as the mechanisms controlling the mechanical properties of nanostructured multiphase composites. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd.

View Journal Article

Cite

Export

Save

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

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

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1251844

Alternate ID(s):: OSTI ID: 1336587

Journal Information:: Acta Materialia, Journal Name: Acta Materialia Vol. 96 Journal Issue: C; ISSN 1359-6454

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 743 works

Citation information provided by
Web of Science

Cited By (64)

Phase Decomposition of a Single-Phase AlTiVNb High-Entropy Alloy after Severe Plastic Deformation and Annealing : Phase Decomposition of a Single-Phase AlTiVNb High-Entropy Alloy Schuh, Benjamin; Völker, Bernhard; Maier-Kiener, Verena Advanced Engineering Materials, Vol. 19, Issue 4 https://doi.org/10.1002/adem.201600674	journal	January 2017
Radioactive isotopes reveal a non sluggish kinetics of grain boundary diffusion in high entropy alloys Vaidya, M.; Pradeep, K. G.; Murty, B. S. Scientific Reports, Vol. 7, Issue 1 https://doi.org/10.1038/s41598-017-12551-9	journal	September 2017
From High-Manganese Steels to Advanced High-Entropy Alloys Haase, Christian; Barrales-Mora, Luis Antonio Metals, Vol. 9, Issue 7 https://doi.org/10.3390/met9070726	journal	June 2019
Phenomenological Investigations on Diffusion Kinetics in Multicomponent Metallic Melts Chen, Wei Min; Yang, Xiong; Zhang, Li Jun Diffusion Foundations, Vol. 15 https://doi.org/10.4028/www.scientific.net/df.15.23	journal	February 2018
High-Entropy Alloys: Potential Candidates for High-Temperature Applications - An Overview Praveen, Sathiyamoorthi; Kim, Hyoung Seop Advanced Engineering Materials, Vol. 20, Issue 1 https://doi.org/10.1002/adem.201700645	journal	October 2017
Taguchi Optimization on the Initial Thickness and Pre-aging of Nano-/Ultrafine-Grained Al-0.2 wt.%Sc Alloy Produced by ARB Yousefieh, Mohammad; Tamizifar, Morteza; Boutorabi, Seyed Mohammad Ali Journal of Materials Engineering and Performance, Vol. 25, Issue 10 https://doi.org/10.1007/s11665-016-2273-3	journal	August 2016
Superplastic-like flow in a fine-grained equiatomic CoCrFeMnNi high-entropy alloy Reddy, S. R.; Bapari, S.; Bhattacharjee, P. P. Materials Research Letters, Vol. 5, Issue 6 https://doi.org/10.1080/21663831.2017.1305460	journal	March 2017
Radioactive isotopes reveal a non sluggish kinetics of grain boundary diffusion in high entropy alloys Vaidya, M.; Pradeep, Konda Gokuldoss; Murty, B. S. RWTH Aachen University https://doi.org/10.18154/rwth-2018-00704	text	January 2017
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
Microstructure and Mechanical Properties Evolution of the Al, C-Containing CoCrFeNiMn-Type High-Entropy Alloy during Cold Rolling Klimova, Margarita; Stepanov, Nikita; Shaysultanov, Dmitry Materials, Vol. 11, Issue 1 https://doi.org/10.3390/ma11010053	journal	December 2017
The Effect of Electronic Structure on the Phases Present in High Entropy Alloys Leong, Zhaoyuan; Wróbel, Jan S.; Dudarev, Sergei L. Scientific Reports, Vol. 7, Issue 1 https://doi.org/10.1038/srep39803	journal	January 2017
Strong grain-size effect on deformation twinning of an Al _0.1 CoCrFeNi high-entropy alloy Wu, S. W.; Wang, G.; Yi, J. Materials Research Letters, Vol. 5, Issue 4 https://doi.org/10.1080/21663831.2016.1257514	journal	November 2016
Nano- and Micro-Mechanical Properties of Ultrafine-Grained Materials Processed by Severe Plastic Deformation Techniques : Nano- and Micro-Mechanical Properties of UFG materials after SPD Kawasaki, Megumi; Ahn, Byungmin; Kumar, Praveen Advanced Engineering Materials, Vol. 19, Issue 1 https://doi.org/10.1002/adem.201600578	journal	October 2016
Effect of Initial Grain Size on Deformation Mechanism during High‐Pressure Torsion in V ₁₀ Cr ₁₅ Mn ₅ Fe ₃₅ Co ₁₀ Ni ₂₅ High‐Entropy Alloy Asghari-Rad, Peyman; Sathiyamoorthi, Praveen; Bae, Jae Wung Advanced Engineering Materials, Vol. 22, Issue 1 https://doi.org/10.1002/adem.201900587	journal	August 2019
A Survey of Nanoindentation Studies on HPT‐Processed Materials Choi, In-Chul; Jang, Jae-il Advanced Engineering Materials, Vol. 22, Issue 1 https://doi.org/10.1002/adem.201900648	journal	August 2019
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
Discovery of a Multinary Noble Metal-Free Oxygen Reduction Catalyst Löffler, Tobias; Meyer, Hajo; Savan, Alan Advanced Energy Materials, Vol. 8, Issue 34 https://doi.org/10.1002/aenm.201802269	journal	October 2018
Effect of carbon content and annealing on structure and hardness of CrFe2NiMnV0.25 high-entropy alloys processed by high-pressure torsion Shahmir, Hamed; Tabachnikova, Elena; Podolskiy, Aleksey Journal of Materials Science, Vol. 53, Issue 16 https://doi.org/10.1007/s10853-018-2456-4	journal	May 2018
Oxidation Behavior of the CrMnFeCoNi High-Entropy Alloy Laplanche, G.; Volkert, U. F.; Eggeler, G. Oxidation of Metals, Vol. 85, Issue 5-6 https://doi.org/10.1007/s11085-016-9616-1	journal	March 2016
Microstructure Evolution in a New Refractory High-Entropy Alloy W-Mo-Cr-Ti-Al Gorr, Bronislava; Azim, Maria; Christ, Hans-Juergen Metallurgical and Materials Transactions A, Vol. 47, Issue 2 https://doi.org/10.1007/s11661-015-3246-0	journal	November 2015
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
Microstructure and mechanical properties of friction stir welded and laser welded high entropy alloy CrMnFeCoNi Jo, Min-Gu; Kim, Han-Jin; Kang, Minjung Metals and Materials International, Vol. 24, Issue 1 https://doi.org/10.1007/s12540-017-7248-x	journal	January 2018
High Temperature Mechanical Properties and Microstructures of Thermally Stabilized Fe-Based Alloys Synthesized by Mechanical Alloying Followed by Hot Extrusion Kotan, Hasan; Darling, Kris A.; Luckenbaugh, Tom Metals and Materials International https://doi.org/10.1007/s12540-019-00567-x	journal	December 2019
Insight on Viscoelasticiy of Ti16.7 Zr16.7 Hf16.7 Cu16.7 Ni16.7 Be16.7 High Entropy Bulk Metallic Glass Qiao, Ji-chao; Pelletier, Jean-marc; Li, Ning Journal of Iron and Steel Research International, Vol. 23, Issue 1 https://doi.org/10.1016/s1006-706x(16)30005-x	journal	January 2016
Nanoscale origins of the damage tolerance of the high-entropy alloy CrMnFeCoNi Zhang, ZiJiao; Mao, M. M.; Wang, Jiangwei Nature Communications, Vol. 6, Issue 1 https://doi.org/10.1038/ncomms10143	journal	December 2015
Exceptional damage-tolerance of a medium-entropy alloy CrCoNi at cryogenic temperatures Gludovatz, Bernd; Hohenwarter, Anton; Thurston, Keli V. S. Nature Communications, Vol. 7, Issue 1 https://doi.org/10.1038/ncomms10602	journal	February 2016
Polymorphism in a high-entropy alloy Zhang, Fei; Wu, Yuan; Lou, Hongbo Nature Communications, Vol. 8, Issue 1 https://doi.org/10.1038/ncomms15687	journal	June 2017
Enhanced strength–ductility synergy in ultrafine-grained eutectic high-entropy alloys by inheriting microstructural lamellae Shi, Peijian; Ren, Weili; Zheng, Tianxiang Nature Communications, Vol. 10, Issue 1 https://doi.org/10.1038/s41467-019-08460-2	journal	January 2019
Mechanical Enhancement of Core-Shell Microlattices through High-Entropy Alloy Coating Surjadi, James Utama; Gao, Libo; Cao, Ke Scientific Reports, Vol. 8, Issue 1 https://doi.org/10.1038/s41598-018-23857-7	journal	April 2018
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
High-entropy alloy strengthened by in situ formation of entropy-stabilized nano-dispersoids Gwalani, Bharat; Pohan, Rizaldy M.; Lee, Junho Scientific Reports, Vol. 8, Issue 1 https://doi.org/10.1038/s41598-018-32552-6	journal	September 2018
Effect of FeCoNiCrCu0.5 High-entropy-alloy Substrate on Sn Grain Size in Sn-3.0Ag-0.5Cu Solder Shen, Yu-An; Lin, Chun-Ming; Li, Jiahui Scientific Reports, Vol. 9, Issue 1 https://doi.org/10.1038/s41598-019-40268-4	journal	March 2019
Nanostructuring with Structural-Compositional Dual Heterogeneities Enhances Strength-Ductility Synergy in Eutectic High Entropy Alloy Reddy, S. R.; Yoshida, S.; Bhattacharjee, T. Scientific Reports, Vol. 9, Issue 1 https://doi.org/10.1038/s41598-019-47983-y	journal	August 2019
On the evolving nature of c/a ratio in a hexagonal close-packed epsilon martensite phase in transformative high entropy alloys Sinha, Subhasis; Nene, Saurabh S.; Frank, Michael Scientific Reports, Vol. 9, Issue 1 https://doi.org/10.1038/s41598-019-49904-5	journal	September 2019
Element Effects on High-Entropy Alloy Vacancy and Heterogeneous Lattice Distortion Subjected to Quasi-equilibrium Heating Huang, E-Wen; Chou, Hung-Sheng; Tu, K. N. Scientific Reports, Vol. 9, Issue 1 https://doi.org/10.1038/s41598-019-51297-4	journal	October 2019
Size effect, critical resolved shear stress, stacking fault energy, and solid solution strengthening in the CrMnFeCoNi high-entropy alloy Okamoto, Norihiko L.; Fujimoto, Shu; Kambara, Yuki Scientific Reports, Vol. 6, Issue 1 https://doi.org/10.1038/srep35863	journal	October 2016
A new mechanism for improving electromagnetic properties based on tunable crystallographic structures of FeCoNiSi _x Al _0.4 high entropy alloy powders Zhang, Bin; Duan, Yuping; Cui, Yulong RSC Advances, Vol. 8, Issue 27 https://doi.org/10.1039/c8ra01762j	journal	January 2018
Unusual plastic deformation behavior of nanotwinned Cu/high entropy alloy FeCoCrNi nanolaminates Zhao, Y. F.; Zhang, J. Y.; Wang, Y. Q. Nanoscale, Vol. 11, Issue 23 https://doi.org/10.1039/c9nr00836e	journal	January 2019
A versatile approach to vacuum injection casting for materials research and development Xu, Donghua; Xu, Yifan Review of Scientific Instruments, Vol. 88, Issue 3 https://doi.org/10.1063/1.4977484	journal	March 2017
Inducing strong magnetism in Cr ₂₀ Mn ₂₀ Fe ₂₀ Co ₂₀ Ni ₂₀ high-entropy alloys by exploiting its anti-Invar property Acet, M. AIP Advances, Vol. 9, Issue 9 https://doi.org/10.1063/1.5120251	journal	September 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
Solute segregation effect on grain boundary migration and Hall–Petch relationship in CrMnFeCoNi high-entropy alloy Liu, G.; Lu, D. H.; Liu, X. W. Materials Science and Technology https://doi.org/10.1080/02670836.2019.1570679	journal	January 2019
High-entropy alloys: a critical assessment of their founding principles and future prospects Pickering, E. J.; Jones, N. G. International Materials Reviews, Vol. 61, Issue 3 https://doi.org/10.1080/09506608.2016.1180020	journal	April 2016
3D geometric phase analysis and its application in 3D microscopic morphology measurement Zhu, Ronghua; Shi, Wenxiong; Cao, Quankun Measurement Science and Technology, Vol. 29, Issue 4 https://doi.org/10.1088/1361-6501/aaa5e5	journal	February 2018
Hardening and thermal stability of a nanocrystalline CoCrFeNiMnTi _0.1 high-entropy alloy processed by high-pressure torsion Shahmir, H.; Nili-Ahmadabadi, M.; Shafie, A. IOP Conference Series: Materials Science and Engineering, Vol. 194 https://doi.org/10.1088/1757-899x/194/1/012017	journal	May 2017
Effect of medium temperature precipitation phase and Mn element diffusion mechanism on high temperature oxidation process of repair and remanufacture CoCrFeMnNi high-entropy alloy cladding Ye, Fuxing; Jiao, Zhipeng; Yang, Yu Materials Research Express, Vol. 6, Issue 5 https://doi.org/10.1088/2053-1591/ab01be	journal	February 2019
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
Preparation of FeCoNiCrMn High Entropy Alloy by Electrochemical Reduction of Solid Oxides in Molten Salt and Its Corrosion Behavior in Aqueous Solution Wang, Bin; Huang, Jian; Fan, Jinhang Journal of The Electrochemical Society, Vol. 164, Issue 14 https://doi.org/10.1149/2.1521714jes	journal	January 2017
Size effects on plasticity in high-entropy alloys Basu, Indranil; Ocelík, Václav; De Hosson, Jeff Th. M. Journal of Materials Research, Vol. 33, Issue 19 https://doi.org/10.1557/jmr.2018.282	journal	August 2018
Metastability in high-entropy alloys: A review Wei, Shaolou; He, Feng; Tasan, Cemal Cem Journal of Materials Research, Vol. 33, Issue 19 https://doi.org/10.1557/jmr.2018.306	journal	September 2018
Investigation on annealing strengthening effect of laser cladding Fe5Cr5Co5SiTiNbMoW high-entropy alloy coating Guo, Yaxiong; Liu, Qibin; Shang, Xiaojuan Journal of Materials Research, Vol. 33, Issue 19 https://doi.org/10.1557/jmr.2018.330	journal	September 2018
Deformation behavior of nanocrystalline and ultrafine-grained CoCrCuFeNi high-entropy alloys Nam, Seungjin; Hwang, Jun Yeon; Jeon, Jonggyu Journal of Materials Research, Vol. 34, Issue 5 https://doi.org/10.1557/jmr.2018.477	journal	January 2019
A comparative study on the evolution of microstructure and hardness during monotonic and cyclic high pressure torsion of CoCuFeMnNi high entropy alloy Sonkusare, Reshma; Khandelwal, Nimish; Ghosh, Pradipta Journal of Materials Research, Vol. 34, Issue 5 https://doi.org/10.1557/jmr.2018.479	journal	February 2019
Synthesis and characterization of hexanary Ti–Zr–V–Cr–Ni–Fe high-entropy Laves phase Mishra, Shashank Shekhar; Mukhopadhyay, Semanti; Yadav, Thakur Prasad Journal of Materials Research, Vol. 34, Issue 5 https://doi.org/10.1557/jmr.2018.502	journal	February 2019
High-entropy alloys by mechanical alloying: A review Vaidya, Mayur; Muralikrishna, Garlapati Mohan; Murty, Budaraju Srinivasa Journal of Materials Research, Vol. 34, Issue 5 https://doi.org/10.1557/jmr.2019.37	journal	March 2019
Impact of Chemical Fluctuations on Stacking Fault Energies of CrCoNi and CrMnFeCoNi High Entropy Alloys from First Principles Ikeda, Yuji; Körmann, Fritz; Tanaka, Isao Entropy, Vol. 20, Issue 9 https://doi.org/10.3390/e20090655	journal	August 2018
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
Effects of Al Addition on Microstructures and Mechanical Properties of CoCrFeMnNiAlx High Entropy Alloy Films Hsu, Ya-Chu; Li, Chia-Lin; Hsueh, Chun-Hway Entropy, Vol. 22, Issue 1 https://doi.org/10.3390/e22010002	journal	December 2019
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
Evolution of Microstructure and Mechanical Properties of a CoCrFeMnNi High-Entropy Alloy during High-Pressure Torsion at Room and Cryogenic Temperatures Zherebtsov, Sergey; Stepanov, Nikita; Ivanisenko, Yulia Metals, Vol. 8, Issue 2 https://doi.org/10.3390/met8020123	journal	February 2018
Applications of High-Pressure Technology for High-Entropy Alloys: A Review Dong, Wanqing; Zhou, Zheng; Zhang, Mengdi Metals, Vol. 9, Issue 8 https://doi.org/10.3390/met9080867	journal	August 2019
Fatigue Behaviour and Crack Initiation in CoCrFeNiMn High-Entropy Alloy Processed by Powder Metallurgy Chlup, Zdeněk; Fintová, Stanislava; Hadraba, Hynek Metals, Vol. 9, Issue 10 https://doi.org/10.3390/met9101110	journal	October 2019
Synthesis of Spherical V-Nb-Mo-Ta-W High-Entropy Alloy Powder Using Hydrogen Embrittlement and Spheroidization by Thermal Plasma Lee, Won-Hyuk; Park, Ki Beom; Yi, Kyung-Woo Metals, Vol. 9, Issue 12 https://doi.org/10.3390/met9121296	journal	December 2019
A Mystery of "Sluggish Diffusion" in High-Entropy Alloys: The Truth or a Myth? Divinski, Sergiy V.; Pokoev, Alexander V.; Esakkiraja, Neelamegan Diffusion Foundations, Vol. 17 https://doi.org/10.4028/www.scientific.net/df.17.69	journal	July 2018

Similar Records

Nanostructured Oxide-Dispersion-Strengthened CoCrFeMnNi High-Entropy Alloys with High Thermal Stability

Journal Article · Fri Jun 25 00:00:00 EDT 2021 · Advanced Engineering Materials · OSTI ID:1251844

Zhang, Xiang; Wang, Fei; Yan, Xueliang; +3 more

Effect of Strain Rate on the Tensile Behavior of CoCrFeNi and CoCrFeMnNi High-Entropy Alloys

Journal Article · Mon Jul 15 00:00:00 EDT 2019 · Journal of Materials Engineering and Performance · OSTI ID:1251844

Shabani, Mitra; Indeck, Joseph; Hazeli, Kavan; +1 more

The effect of carbon on the microstructures, mechanical properties, and deformation mechanisms of thermo-mechanically treated Fe_40.4Ni_11.3Mn_34.8Al_7.5Cr₆ high entropy alloys

Journal Article · Wed Mar 01 00:00:00 EST 2017 · Acta Materialia · OSTI ID:1251844

Wang, Zhangwei; Baker, Ian; Guo, Wei; +1 more

Related Subjects

36 MATERIALS SCIENCE
High-entropy alloys
Severe plastic deformation
Compositionally complex alloys
3 dimensional atom probe tomography
Microstructure
HIGH-PRESSURE TORSION
NANOSTRUCTURED MATERIALS
GRAIN-REFINEMENT
PHASE-STABILITY
ELASTIC-MODULI
STRENGTH
METALS
MN

Title: Mechanical properties, microstructure and thermal stability of a nanocrystalline CoCrFeMnNi high-entropy alloy after severe plastic deformation

Citation Formats

Cited By (64)

Similar Records

Related Subjects