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Effective Surface Nano-Crystallization of Ni(2)FeCoMo(0.5)V(0.2) Medium Entropy Alloy by Rotationally Accelerated Shot Peening (RASP)
The surface nano-crystallization of Ni(2)FeCoMo(0.5)V(0.2) medium-entropy alloy was realized by rotationally accelerated shot peening (RASP). The average grain size at the surface layer is ~37 nm, and the nano-grained layer is as thin as ~20 μm. Transmission electron microscopy analysis revealed tha...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7597164/ https://www.ncbi.nlm.nih.gov/pubmed/33286843 http://dx.doi.org/10.3390/e22101074 |
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author | Liang, Ningning Wang, Xiang Cao, Yang Li, Yusheng Zhu, Yuntian Zhao, Yonghao |
author_facet | Liang, Ningning Wang, Xiang Cao, Yang Li, Yusheng Zhu, Yuntian Zhao, Yonghao |
author_sort | Liang, Ningning |
collection | PubMed |
description | The surface nano-crystallization of Ni(2)FeCoMo(0.5)V(0.2) medium-entropy alloy was realized by rotationally accelerated shot peening (RASP). The average grain size at the surface layer is ~37 nm, and the nano-grained layer is as thin as ~20 μm. Transmission electron microscopy analysis revealed that deformation twinning and dislocation activities are responsible for the effective grain refinement of the high-entropy alloy. In order to reveal the effectiveness of surface nano-crystallization on the Ni(2)FeCoMo(0.5)V(0.2) medium-entropy alloy, a common model material, Ni, is used as a reference. Under the same shot peening condition, the surface layer of Ni could only be refined to an average grain size of ~234 nm. An ultrafine grained surface layer is less effective in absorbing strain energy than a nano-grain layer. Thus, grain refinement could be realized at a depth up to 70 μm in the Ni sample. |
format | Online Article Text |
id | pubmed-7597164 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-75971642020-11-09 Effective Surface Nano-Crystallization of Ni(2)FeCoMo(0.5)V(0.2) Medium Entropy Alloy by Rotationally Accelerated Shot Peening (RASP) Liang, Ningning Wang, Xiang Cao, Yang Li, Yusheng Zhu, Yuntian Zhao, Yonghao Entropy (Basel) Article The surface nano-crystallization of Ni(2)FeCoMo(0.5)V(0.2) medium-entropy alloy was realized by rotationally accelerated shot peening (RASP). The average grain size at the surface layer is ~37 nm, and the nano-grained layer is as thin as ~20 μm. Transmission electron microscopy analysis revealed that deformation twinning and dislocation activities are responsible for the effective grain refinement of the high-entropy alloy. In order to reveal the effectiveness of surface nano-crystallization on the Ni(2)FeCoMo(0.5)V(0.2) medium-entropy alloy, a common model material, Ni, is used as a reference. Under the same shot peening condition, the surface layer of Ni could only be refined to an average grain size of ~234 nm. An ultrafine grained surface layer is less effective in absorbing strain energy than a nano-grain layer. Thus, grain refinement could be realized at a depth up to 70 μm in the Ni sample. MDPI 2020-09-24 /pmc/articles/PMC7597164/ /pubmed/33286843 http://dx.doi.org/10.3390/e22101074 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Liang, Ningning Wang, Xiang Cao, Yang Li, Yusheng Zhu, Yuntian Zhao, Yonghao Effective Surface Nano-Crystallization of Ni(2)FeCoMo(0.5)V(0.2) Medium Entropy Alloy by Rotationally Accelerated Shot Peening (RASP) |
title | Effective Surface Nano-Crystallization of Ni(2)FeCoMo(0.5)V(0.2) Medium Entropy Alloy by Rotationally Accelerated Shot Peening (RASP) |
title_full | Effective Surface Nano-Crystallization of Ni(2)FeCoMo(0.5)V(0.2) Medium Entropy Alloy by Rotationally Accelerated Shot Peening (RASP) |
title_fullStr | Effective Surface Nano-Crystallization of Ni(2)FeCoMo(0.5)V(0.2) Medium Entropy Alloy by Rotationally Accelerated Shot Peening (RASP) |
title_full_unstemmed | Effective Surface Nano-Crystallization of Ni(2)FeCoMo(0.5)V(0.2) Medium Entropy Alloy by Rotationally Accelerated Shot Peening (RASP) |
title_short | Effective Surface Nano-Crystallization of Ni(2)FeCoMo(0.5)V(0.2) Medium Entropy Alloy by Rotationally Accelerated Shot Peening (RASP) |
title_sort | effective surface nano-crystallization of ni(2)fecomo(0.5)v(0.2) medium entropy alloy by rotationally accelerated shot peening (rasp) |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7597164/ https://www.ncbi.nlm.nih.gov/pubmed/33286843 http://dx.doi.org/10.3390/e22101074 |
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