Uncovering wear mechanism of a Fe2Ni2CrAl multi-principal elements alloy

Fe2Ni2CrAl multi-principal elements alloy (MPEA) has been regarded as promising candidate for engineering application due to its desirable combination of strength and plasticity. In this work, the microstructure, hardness and wear resistance of Fe2Ni2CrAl MPEA were systematically investigated. This...

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Main Authors: Qiao, Ling, Ramanujan, Raju V., Zhu, Jingchuan
Other Authors: School of Materials Science and Engineering
Format: Article
Language:English
Published: 2023
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Online Access:https://hdl.handle.net/10356/168981
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1689812023-06-26T03:07:46Z Uncovering wear mechanism of a Fe2Ni2CrAl multi-principal elements alloy Qiao, Ling Ramanujan, Raju V. Zhu, Jingchuan School of Materials Science and Engineering Engineering::Materials Dual Phase Structures Microstructure Hardness Fe2Ni2CrAl multi-principal elements alloy (MPEA) has been regarded as promising candidate for engineering application due to its desirable combination of strength and plasticity. In this work, the microstructure, hardness and wear resistance of Fe2Ni2CrAl MPEA were systematically investigated. This alloy has a dual-phase structure, comprised of the FCC and BCC/+B2 phase. The average nanohardness is 4.59 GPa, and the average elastic modulus is 199.4 GPa. By performing reciprocating ball-on-flat friction tests, the Fe2Ni2CrAl MPEA shows good wear resistance, with a wear rate of 8.72 × 10−5 mm3/(Nm) and average friction coefficient of ~ 0.54. The wear mechanisms are a mixture of adhesive, abrasive and oxidation wear, accompanied by cracks and delamination. Molecular dynamics (MD) was utilized to study the wear behavior at nanoscale. The surface suffers severer deformation during the first slide. Then, the reciprocating friction contributes to the surface strain hardening in the later slide. The large displacement and shear strain region were concentrated below the rigid ball, and the atomic damage was identified. Fewer dislocations are produced during reciprocating friction, accompanied with the reduced atomic shear strain and lattice deterioration. The Shockley-type dislocation plays a dominant role in the whole nano-wear process. This work explored the friction behavior in depth and provided a deep insight into wear mechanisms for Fe2Ni2CrAl MPEAs. Agency for Science, Technology and Research (A*STAR) This work is supported by AME Programmatic Fund by the Agency for Science, Technology and Research, Singapore under Grants No. A1898b0043 and A18B1b0061 and the China Scholarship Council. 2023-06-26T03:07:46Z 2023-06-26T03:07:46Z 2023 Journal Article Qiao, L., Ramanujan, R. V. & Zhu, J. (2023). Uncovering wear mechanism of a Fe2Ni2CrAl multi-principal elements alloy. Journal of Materials Science, 58(6), 2660-2675. https://dx.doi.org/10.1007/s10853-023-08193-0 0022-2461 https://hdl.handle.net/10356/168981 10.1007/s10853-023-08193-0 2-s2.0-85147176043 6 58 2660 2675 en A1898b0043 A18B1b0061 Journal of Materials Science © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2023.
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
Dual Phase Structures
Microstructure Hardness
spellingShingle Engineering::Materials
Dual Phase Structures
Microstructure Hardness
Qiao, Ling
Ramanujan, Raju V.
Zhu, Jingchuan
Uncovering wear mechanism of a Fe2Ni2CrAl multi-principal elements alloy
description Fe2Ni2CrAl multi-principal elements alloy (MPEA) has been regarded as promising candidate for engineering application due to its desirable combination of strength and plasticity. In this work, the microstructure, hardness and wear resistance of Fe2Ni2CrAl MPEA were systematically investigated. This alloy has a dual-phase structure, comprised of the FCC and BCC/+B2 phase. The average nanohardness is 4.59 GPa, and the average elastic modulus is 199.4 GPa. By performing reciprocating ball-on-flat friction tests, the Fe2Ni2CrAl MPEA shows good wear resistance, with a wear rate of 8.72 × 10−5 mm3/(Nm) and average friction coefficient of ~ 0.54. The wear mechanisms are a mixture of adhesive, abrasive and oxidation wear, accompanied by cracks and delamination. Molecular dynamics (MD) was utilized to study the wear behavior at nanoscale. The surface suffers severer deformation during the first slide. Then, the reciprocating friction contributes to the surface strain hardening in the later slide. The large displacement and shear strain region were concentrated below the rigid ball, and the atomic damage was identified. Fewer dislocations are produced during reciprocating friction, accompanied with the reduced atomic shear strain and lattice deterioration. The Shockley-type dislocation plays a dominant role in the whole nano-wear process. This work explored the friction behavior in depth and provided a deep insight into wear mechanisms for Fe2Ni2CrAl MPEAs.
author2 School of Materials Science and Engineering
author_facet School of Materials Science and Engineering
Qiao, Ling
Ramanujan, Raju V.
Zhu, Jingchuan
format Article
author Qiao, Ling
Ramanujan, Raju V.
Zhu, Jingchuan
author_sort Qiao, Ling
title Uncovering wear mechanism of a Fe2Ni2CrAl multi-principal elements alloy
title_short Uncovering wear mechanism of a Fe2Ni2CrAl multi-principal elements alloy
title_full Uncovering wear mechanism of a Fe2Ni2CrAl multi-principal elements alloy
title_fullStr Uncovering wear mechanism of a Fe2Ni2CrAl multi-principal elements alloy
title_full_unstemmed Uncovering wear mechanism of a Fe2Ni2CrAl multi-principal elements alloy
title_sort uncovering wear mechanism of a fe2ni2cral multi-principal elements alloy
publishDate 2023
url https://hdl.handle.net/10356/168981
_version_ 1772828849005920256