Twenty years of the CoCrFeNiMn high-entropy alloy: achieving exceptional mechanical properties through microstructure engineering
Twenty years of the CoCrFeNiMn high-entropy alloy: achieving exceptional mechanical properties through microstructure engineering
The CoCrFeNiMn multicomponent is one of the most widely and best studied of all high-entropy alloys (HEAs) since its exceptional properties suggest potential uses as a structural material in many industrial applications. In practice, a good balance between strength and ductility is one of the most important challenges in developing alloys in modern materials science and engineering. There have been many attempts to overcome the strength-ductility trade-off in the CoCrFeNiMn alloy due to its relatively low strength. These attempts include adding a minor sixth element, such as oxide or carbide particles, and also developing thermomechanical processing for grain refinement or precipitation to produce a tailored microstructure with optimum mechanical properties. This review describes the deformation mechanisms and the microstructural evolutions in this alloy during plastic deformation under different conditions of temperature, strain and strain rate where these are important for the processing and manufacturing of the alloy. In addition, this study provides a perspective on the behavior of the alloy under high temperature exposure and also under cyclic loading which is generally the most important factor in industrial applications. This understanding demonstrates that there is a very large potential for the future enhancement and optimization of this and other comparable HEAs.
CoCrFeNiMn, High-entropy alloy, Mechanical properties, Microstructure engineering, Thermomechanical treatment
3362-3423
Shahmir, Hamed
9d330616-d35d-4db0-96e8-26195ae1c511
Sajad Mehranpour, Mohammad
ef690c1f-b2b0-4440-a987-f76d41019f9a
Amir Arsalan Shams, Seyed
8065359a-284f-47ce-80dd-3707909c973d
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
17 February 2023
Shahmir, Hamed
9d330616-d35d-4db0-96e8-26195ae1c511
Sajad Mehranpour, Mohammad
ef690c1f-b2b0-4440-a987-f76d41019f9a
Amir Arsalan Shams, Seyed
8065359a-284f-47ce-80dd-3707909c973d
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Shahmir, Hamed, Sajad Mehranpour, Mohammad, Amir Arsalan Shams, Seyed and Langdon, Terence G.
(2023)
Twenty years of the CoCrFeNiMn high-entropy alloy: achieving exceptional mechanical properties through microstructure engineering.
Journal of Materials Research and Technology, 23, .
(doi:10.1016/j.jmrt.2023.01.181).
Abstract
The CoCrFeNiMn multicomponent is one of the most widely and best studied of all high-entropy alloys (HEAs) since its exceptional properties suggest potential uses as a structural material in many industrial applications. In practice, a good balance between strength and ductility is one of the most important challenges in developing alloys in modern materials science and engineering. There have been many attempts to overcome the strength-ductility trade-off in the CoCrFeNiMn alloy due to its relatively low strength. These attempts include adding a minor sixth element, such as oxide or carbide particles, and also developing thermomechanical processing for grain refinement or precipitation to produce a tailored microstructure with optimum mechanical properties. This review describes the deformation mechanisms and the microstructural evolutions in this alloy during plastic deformation under different conditions of temperature, strain and strain rate where these are important for the processing and manufacturing of the alloy. In addition, this study provides a perspective on the behavior of the alloy under high temperature exposure and also under cyclic loading which is generally the most important factor in industrial applications. This understanding demonstrates that there is a very large potential for the future enhancement and optimization of this and other comparable HEAs.
Text
1-s2.0-S2238785423001746-main
- Version of Record
More information
Accepted/In Press date: 24 January 2023
e-pub ahead of print date: 1 February 2023
Published date: 17 February 2023
Additional Information:
Funding Information:
This work was supported by the National Elites Foundation of the Islamic Republic of Iran and in part by the European Research Council under Grant Agreement No. 267464-SPDMETALS (HS and TGL).
Dr. Hamed Shahmir graduated from School of Materials Science and Engineering, University of Tehran in 2015. After graduation, he started working in University of Southampton in UK as a Research Fellow (2015–2017) and then succeeded to get support from National Elites Foundation of Islamic Republic of Iran for accomplishing research as a Research Fellow in University of Tehran (2017–2019). Afterwards, he had a position as a Research Associate in University of Sheffield, UK (2019-2020). After that, he returned to Iran and started his career as Assistance Professor in Department of Materials Engineering of Tarbiat Modares University. His experiences on material processing combined with strong background in physical metallurgy, phase transformations and deformation mechanisms at ambient and high temperatures, place him in a very strong position to work on microstructure engineering in metallic materials.
Publisher Copyright:
© 2023 The Author(s)
Keywords:
CoCrFeNiMn, High-entropy alloy, Mechanical properties, Microstructure engineering, Thermomechanical treatment
Identifiers
Local EPrints ID: 482345
URI: http://eprints.soton.ac.uk/id/eprint/482345
ISSN: 2238-7854
PURE UUID: d451cfc6-a20e-4d60-8fc1-014d962d602c
Catalogue record
Date deposited: 27 Sep 2023 16:38
Last modified: 18 Mar 2024 02:56
Export record
Altmetrics
Contributors
Author:
Hamed Shahmir
Author:
Mohammad Sajad Mehranpour
Author:
Seyed Amir Arsalan Shams
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
