Surface Morphology and Subsurface Microstructure Evolution When Form Grinding 20Cr2Ni4A Alloys
20Cr2Ni4A alloy is widely used in the manufacturing of heavy-duty gears, although limited information about its machinability during the form-grinding process has been reported. In this work, form-grinding trials on transmission gears of 20Cr2Ni4A alloy under various parameters were conducted. Surfa...
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| Format: | Article |
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MDPI AG
2023-01-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/1/425 |
| _version_ | 1797625338936688640 |
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| author | Xiaodong Zhang Xiaoyang Jiang Maojun Li Pan Gong |
| author_facet | Xiaodong Zhang Xiaoyang Jiang Maojun Li Pan Gong |
| author_sort | Xiaodong Zhang |
| collection | DOAJ |
| description | 20Cr2Ni4A alloy is widely used in the manufacturing of heavy-duty gears, although limited information about its machinability during the form-grinding process has been reported. In this work, form-grinding trials on transmission gears of 20Cr2Ni4A alloy under various parameters were conducted. Surface morphology of the gear tooth, surface roughness distribution and microstructure evolution of the machined surface layer were comprehensively studied, and the influence of grinding parameters on grinding performance was investigated. The formation mechanisms of surface/subsurface defects during the form-grinding process, including plastic flow, deep grooves, successive crushing zone, adhesive chips and cavities, were analyzed. Results showed that the change in contact conditions between the grinding wheel and tooth surface led to the decrease in the surface roughness from tooth tip to root. Mechanical force and grinding heat promoted the deformation and refinement of the microstructure within the machined surface layer. With the increase in cutting depth and feed speed, the deformation ratio of the microstructure increased, which was also consistent with the variation trend in the form-grinding temperature. |
| first_indexed | 2024-03-11T09:55:09Z |
| format | Article |
| id | doaj.art-87d1e58b397a4bbf950766289e6d4622 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T09:55:09Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-87d1e58b397a4bbf950766289e6d46222023-11-16T15:51:31ZengMDPI AGMaterials1996-19442023-01-0116142510.3390/ma16010425Surface Morphology and Subsurface Microstructure Evolution When Form Grinding 20Cr2Ni4A AlloysXiaodong Zhang0Xiaoyang Jiang1Maojun Li2Pan Gong3State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha 410082, ChinaState Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha 410082, ChinaState Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha 410082, ChinaState Key Laboratory of Materials Processing and Die & Mold Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China20Cr2Ni4A alloy is widely used in the manufacturing of heavy-duty gears, although limited information about its machinability during the form-grinding process has been reported. In this work, form-grinding trials on transmission gears of 20Cr2Ni4A alloy under various parameters were conducted. Surface morphology of the gear tooth, surface roughness distribution and microstructure evolution of the machined surface layer were comprehensively studied, and the influence of grinding parameters on grinding performance was investigated. The formation mechanisms of surface/subsurface defects during the form-grinding process, including plastic flow, deep grooves, successive crushing zone, adhesive chips and cavities, were analyzed. Results showed that the change in contact conditions between the grinding wheel and tooth surface led to the decrease in the surface roughness from tooth tip to root. Mechanical force and grinding heat promoted the deformation and refinement of the microstructure within the machined surface layer. With the increase in cutting depth and feed speed, the deformation ratio of the microstructure increased, which was also consistent with the variation trend in the form-grinding temperature.https://www.mdpi.com/1996-1944/16/1/425microstructure evolutionsurface morphologyform grindinggrinding defects |
| spellingShingle | Xiaodong Zhang Xiaoyang Jiang Maojun Li Pan Gong Surface Morphology and Subsurface Microstructure Evolution When Form Grinding 20Cr2Ni4A Alloys Materials microstructure evolution surface morphology form grinding grinding defects |
| title | Surface Morphology and Subsurface Microstructure Evolution When Form Grinding 20Cr2Ni4A Alloys |
| title_full | Surface Morphology and Subsurface Microstructure Evolution When Form Grinding 20Cr2Ni4A Alloys |
| title_fullStr | Surface Morphology and Subsurface Microstructure Evolution When Form Grinding 20Cr2Ni4A Alloys |
| title_full_unstemmed | Surface Morphology and Subsurface Microstructure Evolution When Form Grinding 20Cr2Ni4A Alloys |
| title_short | Surface Morphology and Subsurface Microstructure Evolution When Form Grinding 20Cr2Ni4A Alloys |
| title_sort | surface morphology and subsurface microstructure evolution when form grinding 20cr2ni4a alloys |
| topic | microstructure evolution surface morphology form grinding grinding defects |
| url | https://www.mdpi.com/1996-1944/16/1/425 |
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