Effect of pulsed magnetic field on retained austenite of quenched 8Cr4Mo4V steel under cryogenic condition
High-intensity pulsed magnetic field was applied to modify the microstructure and mechanical propertis of quenched 8Cr4Mo4V bearing steel under the cryogenic environment. The microstructual transformation in 8Cr4Mo4V bearing steel was investigated by X-ray diffraction (XRD), Vibrating sample magneto...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423003435 |
| _version_ | 1797858738373132288 |
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| author | Zheng Li Kejian Li Chengkai Qian Dexin Wang Wen Ji Yao Wu Zhipeng Cai Qu Liu |
| author_facet | Zheng Li Kejian Li Chengkai Qian Dexin Wang Wen Ji Yao Wu Zhipeng Cai Qu Liu |
| author_sort | Zheng Li |
| collection | DOAJ |
| description | High-intensity pulsed magnetic field was applied to modify the microstructure and mechanical propertis of quenched 8Cr4Mo4V bearing steel under the cryogenic environment. The microstructual transformation in 8Cr4Mo4V bearing steel was investigated by X-ray diffraction (XRD), Vibrating sample magnetometer (VSM) and Electron Backscatter Diffraction (EBSD) and so on. The results revealed that individual deep cryogenic treatment (DCT) promote the transformation from retained austenite (RA) in quenched steel to martensite. However, this phase transformation will be inhibited by coupling high-intensity magnetic field with deep cryogenic treatment (MDCT). For instance, the relative reduction of RA content in DCT samples was 10 ± 2%, while that in MDCT samples was 3 ± 3%. Furthermore, the modified Williamson-Hall method was utilized to estimate the dislocation characteristics based on XRD profile analysis. It exhibited that the proportion of edge dislocation significantly decrease from 61.8% to 43.7% by DCT, while this type of dislocation remains almost unchanged after MDCT. Moreover, the microhardness of quenched 8Cr4Mo4V steel became more uniform after MDCT than that of DCT. It can be indicated that the martensite transformation is blocked and carbon cluster is dissolved under the condition of coupling pulsed magnetic field treatment. |
| first_indexed | 2024-04-09T21:18:14Z |
| format | Article |
| id | doaj.art-3b348b622f4d40608209788cf35c333d |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-09T21:18:14Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-3b348b622f4d40608209788cf35c333d2023-03-28T06:48:19ZengElsevierJournal of Materials Research and Technology2238-78542023-03-012350045015Effect of pulsed magnetic field on retained austenite of quenched 8Cr4Mo4V steel under cryogenic conditionZheng Li0Kejian Li1Chengkai Qian2Dexin Wang3Wen Ji4Yao Wu5Zhipeng Cai6Qu Liu7Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China; Tianjin Research Institute for Advanced Equipment, Tsinghua University, Tianjin 300304, ChinaDepartment of Mechanical Engineering, Tsinghua University, Beijing 100084, ChinaDepartment of Mechanical Engineering, Tsinghua University, Beijing 100084, ChinaDepartment of Mechanical Engineering, Tsinghua University, Beijing 100084, ChinaTianjin Research Institute for Advanced Equipment, Tsinghua University, Tianjin 300304, ChinaTianjin Research Institute for Advanced Equipment, Tsinghua University, Tianjin 300304, ChinaDepartment of Mechanical Engineering, Tsinghua University, Beijing 100084, China; Tianjin Research Institute for Advanced Equipment, Tsinghua University, Tianjin 300304, China; State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, ChinaDepartment of Mechanical Engineering, Tsinghua University, Beijing 100084, China; Corresponding author. Department of Mechanical Engineering, Tsinghua University, Beijing, China.High-intensity pulsed magnetic field was applied to modify the microstructure and mechanical propertis of quenched 8Cr4Mo4V bearing steel under the cryogenic environment. The microstructual transformation in 8Cr4Mo4V bearing steel was investigated by X-ray diffraction (XRD), Vibrating sample magnetometer (VSM) and Electron Backscatter Diffraction (EBSD) and so on. The results revealed that individual deep cryogenic treatment (DCT) promote the transformation from retained austenite (RA) in quenched steel to martensite. However, this phase transformation will be inhibited by coupling high-intensity magnetic field with deep cryogenic treatment (MDCT). For instance, the relative reduction of RA content in DCT samples was 10 ± 2%, while that in MDCT samples was 3 ± 3%. Furthermore, the modified Williamson-Hall method was utilized to estimate the dislocation characteristics based on XRD profile analysis. It exhibited that the proportion of edge dislocation significantly decrease from 61.8% to 43.7% by DCT, while this type of dislocation remains almost unchanged after MDCT. Moreover, the microhardness of quenched 8Cr4Mo4V steel became more uniform after MDCT than that of DCT. It can be indicated that the martensite transformation is blocked and carbon cluster is dissolved under the condition of coupling pulsed magnetic field treatment.http://www.sciencedirect.com/science/article/pii/S2238785423003435Retained austenitePulsed magnetic fieldCryogenic treatmentDislocation characteristics |
| spellingShingle | Zheng Li Kejian Li Chengkai Qian Dexin Wang Wen Ji Yao Wu Zhipeng Cai Qu Liu Effect of pulsed magnetic field on retained austenite of quenched 8Cr4Mo4V steel under cryogenic condition Journal of Materials Research and Technology Retained austenite Pulsed magnetic field Cryogenic treatment Dislocation characteristics |
| title | Effect of pulsed magnetic field on retained austenite of quenched 8Cr4Mo4V steel under cryogenic condition |
| title_full | Effect of pulsed magnetic field on retained austenite of quenched 8Cr4Mo4V steel under cryogenic condition |
| title_fullStr | Effect of pulsed magnetic field on retained austenite of quenched 8Cr4Mo4V steel under cryogenic condition |
| title_full_unstemmed | Effect of pulsed magnetic field on retained austenite of quenched 8Cr4Mo4V steel under cryogenic condition |
| title_short | Effect of pulsed magnetic field on retained austenite of quenched 8Cr4Mo4V steel under cryogenic condition |
| title_sort | effect of pulsed magnetic field on retained austenite of quenched 8cr4mo4v steel under cryogenic condition |
| topic | Retained austenite Pulsed magnetic field Cryogenic treatment Dislocation characteristics |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423003435 |
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