Hot Deformation Behavior and Processing Maps of 26CrMo7S Steel Used in Oil Exploration
The hot deformation behavior and flow stress characteristics of experimental 26CrMo7S steel were analyzed using a thermal simulator under a range of conditions, including a strain rate range of 0.01~10 s<sup>−1</sup>, a temperature range of 850~1250 °C, and a maximum deformation amount o...
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MDPI AG
2023-11-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/21/7056 |
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| author | Hemiao Jiang Hongying Li Dianyuan Huang Yinghui Zhao Jiwen Liu Qing Gao Hang He Ximao Liu |
| author_facet | Hemiao Jiang Hongying Li Dianyuan Huang Yinghui Zhao Jiwen Liu Qing Gao Hang He Ximao Liu |
| author_sort | Hemiao Jiang |
| collection | DOAJ |
| description | The hot deformation behavior and flow stress characteristics of experimental 26CrMo7S steel were analyzed using a thermal simulator under a range of conditions, including a strain rate range of 0.01~10 s<sup>−1</sup>, a temperature range of 850~1250 °C, and a maximum deformation amount of 70%. The Arrhenius constitutive model was built for the corresponding conditions, and the model’s accuracy was verified through error analysis. Additionally, hot processing maps were constructed to analyze the processing zone of the steel under different hot deformation conditions. Finally, the microstructure of the processing zones was observed and verified using the electron backscattered diffraction (EBSD). The results indicate that the interaction of work hardening and dynamic softening influences the hot deformation behavior of 26CrMo7S steel. The Arrhenius constitutive equation with a value of the correlation coefficient (<i>r</i> = 0.99523) accurately predicts the flow behavior of 26CrMo7S steel under different strains. The optimal processing zone obtained with the hot processing maps is within a deformation range of 1010~1190 °C and a strain rate range of 0.01~10<sup>−1.5</sup> s<sup>−1</sup>, and the obtained microstructure is in good agreement with the analysis results. |
| first_indexed | 2024-03-11T11:25:20Z |
| format | Article |
| id | doaj.art-60a965bd1edf4bff84040956390d611b |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T11:25:20Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-60a965bd1edf4bff84040956390d611b2023-11-10T15:07:46ZengMDPI AGMaterials1996-19442023-11-011621705610.3390/ma16217056Hot Deformation Behavior and Processing Maps of 26CrMo7S Steel Used in Oil ExplorationHemiao Jiang0Hongying Li1Dianyuan Huang2Yinghui Zhao3Jiwen Liu4Qing Gao5Hang He6Ximao Liu7School of Materials Science and Engineering, Central South University, Changsha 410083, ChinaSchool of Materials Science and Engineering, Central South University, Changsha 410083, ChinaHengyang Valin Steel Pipe Co., Ltd., Hengyang 421001, ChinaHengyang Valin Steel Pipe Co., Ltd., Hengyang 421001, ChinaXiangtan Iron & Steel Co., Ltd. of Hunan Valin, Xiangtan 411101, ChinaXiangtan Iron & Steel Co., Ltd. of Hunan Valin, Xiangtan 411101, ChinaHengyang Valin Steel Pipe Co., Ltd., Hengyang 421001, ChinaXiangtan Iron & Steel Co., Ltd. of Hunan Valin, Xiangtan 411101, ChinaThe hot deformation behavior and flow stress characteristics of experimental 26CrMo7S steel were analyzed using a thermal simulator under a range of conditions, including a strain rate range of 0.01~10 s<sup>−1</sup>, a temperature range of 850~1250 °C, and a maximum deformation amount of 70%. The Arrhenius constitutive model was built for the corresponding conditions, and the model’s accuracy was verified through error analysis. Additionally, hot processing maps were constructed to analyze the processing zone of the steel under different hot deformation conditions. Finally, the microstructure of the processing zones was observed and verified using the electron backscattered diffraction (EBSD). The results indicate that the interaction of work hardening and dynamic softening influences the hot deformation behavior of 26CrMo7S steel. The Arrhenius constitutive equation with a value of the correlation coefficient (<i>r</i> = 0.99523) accurately predicts the flow behavior of 26CrMo7S steel under different strains. The optimal processing zone obtained with the hot processing maps is within a deformation range of 1010~1190 °C and a strain rate range of 0.01~10<sup>−1.5</sup> s<sup>−1</sup>, and the obtained microstructure is in good agreement with the analysis results.https://www.mdpi.com/1996-1944/16/21/7056hot deformationconstitutive equationdynamic recoverydynamic recrystallizationhot processing map |
| spellingShingle | Hemiao Jiang Hongying Li Dianyuan Huang Yinghui Zhao Jiwen Liu Qing Gao Hang He Ximao Liu Hot Deformation Behavior and Processing Maps of 26CrMo7S Steel Used in Oil Exploration Materials hot deformation constitutive equation dynamic recovery dynamic recrystallization hot processing map |
| title | Hot Deformation Behavior and Processing Maps of 26CrMo7S Steel Used in Oil Exploration |
| title_full | Hot Deformation Behavior and Processing Maps of 26CrMo7S Steel Used in Oil Exploration |
| title_fullStr | Hot Deformation Behavior and Processing Maps of 26CrMo7S Steel Used in Oil Exploration |
| title_full_unstemmed | Hot Deformation Behavior and Processing Maps of 26CrMo7S Steel Used in Oil Exploration |
| title_short | Hot Deformation Behavior and Processing Maps of 26CrMo7S Steel Used in Oil Exploration |
| title_sort | hot deformation behavior and processing maps of 26crmo7s steel used in oil exploration |
| topic | hot deformation constitutive equation dynamic recovery dynamic recrystallization hot processing map |
| url | https://www.mdpi.com/1996-1944/16/21/7056 |
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