Microstructural Evolution of Shear Localization in High-Speed Cutting of CoCrFeMnNi High-Entropy Alloy
Shear localization is one of the most important failure mechanisms subjected to high-strain-rate deformation and has significant effects on the process, plastic deformation, and catastrophic failure of a material. Shear localization was observed in serrated chips produced during the high-speed cutti...
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MDPI AG
2023-03-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/13/4/647 |
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| author | Ming-Yao Su Wei-Han Zhang Yuan-Yuan Tan Yan Chen Hai-Ying Wang Lan-Hong Dai |
| author_facet | Ming-Yao Su Wei-Han Zhang Yuan-Yuan Tan Yan Chen Hai-Ying Wang Lan-Hong Dai |
| author_sort | Ming-Yao Su |
| collection | DOAJ |
| description | Shear localization is one of the most important failure mechanisms subjected to high-strain-rate deformation and has significant effects on the process, plastic deformation, and catastrophic failure of a material. Shear localization was observed in serrated chips produced during the high-speed cutting of the CoCrFeMnNi high-entropy alloy. Electron backscatter diffraction was performed to systematically investigate microstructural evolution during shear banding. The elongation and subdivision of the narrow grains were observed in the areas adjacent to the shear band. The microstructure inside the shear band was found to be composed of equiaxed ultrafine grains. The results reveal that grain subdivision and dynamic recrystallization might have significant roles in the microstructural evolution of shear bands. These results offer key insights into our understanding of shear localization and high-speed machining behavior for high entropy alloys. |
| first_indexed | 2024-03-11T04:45:00Z |
| format | Article |
| id | doaj.art-c0167fd8fb7040848d5ac9723ee8708f |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-11T04:45:00Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-c0167fd8fb7040848d5ac9723ee8708f2023-11-17T20:25:38ZengMDPI AGMetals2075-47012023-03-0113464710.3390/met13040647Microstructural Evolution of Shear Localization in High-Speed Cutting of CoCrFeMnNi High-Entropy AlloyMing-Yao Su0Wei-Han Zhang1Yuan-Yuan Tan2Yan Chen3Hai-Ying Wang4Lan-Hong Dai5State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaState Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, ChinaShear localization is one of the most important failure mechanisms subjected to high-strain-rate deformation and has significant effects on the process, plastic deformation, and catastrophic failure of a material. Shear localization was observed in serrated chips produced during the high-speed cutting of the CoCrFeMnNi high-entropy alloy. Electron backscatter diffraction was performed to systematically investigate microstructural evolution during shear banding. The elongation and subdivision of the narrow grains were observed in the areas adjacent to the shear band. The microstructure inside the shear band was found to be composed of equiaxed ultrafine grains. The results reveal that grain subdivision and dynamic recrystallization might have significant roles in the microstructural evolution of shear bands. These results offer key insights into our understanding of shear localization and high-speed machining behavior for high entropy alloys.https://www.mdpi.com/2075-4701/13/4/647high-entropy alloyhigh-speed cuttingshear bandsdynamic recrystallization |
| spellingShingle | Ming-Yao Su Wei-Han Zhang Yuan-Yuan Tan Yan Chen Hai-Ying Wang Lan-Hong Dai Microstructural Evolution of Shear Localization in High-Speed Cutting of CoCrFeMnNi High-Entropy Alloy Metals high-entropy alloy high-speed cutting shear bands dynamic recrystallization |
| title | Microstructural Evolution of Shear Localization in High-Speed Cutting of CoCrFeMnNi High-Entropy Alloy |
| title_full | Microstructural Evolution of Shear Localization in High-Speed Cutting of CoCrFeMnNi High-Entropy Alloy |
| title_fullStr | Microstructural Evolution of Shear Localization in High-Speed Cutting of CoCrFeMnNi High-Entropy Alloy |
| title_full_unstemmed | Microstructural Evolution of Shear Localization in High-Speed Cutting of CoCrFeMnNi High-Entropy Alloy |
| title_short | Microstructural Evolution of Shear Localization in High-Speed Cutting of CoCrFeMnNi High-Entropy Alloy |
| title_sort | microstructural evolution of shear localization in high speed cutting of cocrfemnni high entropy alloy |
| topic | high-entropy alloy high-speed cutting shear bands dynamic recrystallization |
| url | https://www.mdpi.com/2075-4701/13/4/647 |
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