Kinetics and microstructure evolution of dynamic recrystallization of medium-Mn steel during hot working
The dynamic recrystallization (DRX) behavior and microstructure evolution of medium-Mn (0.15C–10Mn) steel were investigated through isothermal hot compression tests. The flow stress–strain curves and microstructure analysis, in wide ranges of temperatures (900–1150 °C) and strain rates (10−3 - 1 s−1...
| Main Authors: | , , , , , , , |
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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 |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423003733 |
| _version_ | 1797858763689951232 |
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| author | Xiaoyun Sun Banglun Wang Yuanpei Duan Qi Liu Xiang Xu Sheng Wang Xianfeng Yang Xue Feng |
| author_facet | Xiaoyun Sun Banglun Wang Yuanpei Duan Qi Liu Xiang Xu Sheng Wang Xianfeng Yang Xue Feng |
| author_sort | Xiaoyun Sun |
| collection | DOAJ |
| description | The dynamic recrystallization (DRX) behavior and microstructure evolution of medium-Mn (0.15C–10Mn) steel were investigated through isothermal hot compression tests. The flow stress–strain curves and microstructure analysis, in wide ranges of temperatures (900–1150 °C) and strain rates (10−3 - 1 s−1), were employed to establish constitutive equations and a grain size evolution model. Since the material constants were calculated based on polynomial function of strains, strain compensation was introduced into constitutive analysis. Comparison and verification showed that the constitutive equation had a high predictive ability. The correlation coefficient and average absolute relative error were 0.99 and 4.46%, respectively, which confirm the accuracy and guidance of the model. Metallographic observation was used to implement the grain size evolution analysis of the medium-Mn steel. Microstructure evolution was characterized with a gradual increase in average recrystallized grain size and an obvious expansion in the range of grain size distribution with both deformation temperature and strain rate, which were attributed to the competition between nucleation and grain boundary migration. Besides, a grain size evolution model was established to analyze the microstructure evolution. |
| first_indexed | 2024-04-09T21:18:39Z |
| format | Article |
| id | doaj.art-a67a6379d7ce4e97a0b8b8800fc6a5ae |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-09T21:18:39Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-a67a6379d7ce4e97a0b8b8800fc6a5ae2023-03-28T06:48:43ZengElsevierJournal of Materials Research and Technology2238-78542023-03-012356315643Kinetics and microstructure evolution of dynamic recrystallization of medium-Mn steel during hot workingXiaoyun Sun0Banglun Wang1Yuanpei Duan2Qi Liu3Xiang Xu4Sheng Wang5Xianfeng Yang6Xue Feng7School of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, Anhui, China; Corresponding author.School of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, Anhui, China; Corresponding author.School of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, Anhui, ChinaSchool of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, Anhui, ChinaAnhui Sanlu Industrial Co., Ltd. Wuhu 241300, Anhui, ChinaSchool of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, Anhui, ChinaSchool of Materials Science and Engineering, Anhui Polytechnic University, Wuhu 241000, Anhui, ChinaSchool of Materials Science and Engineering, Northeastern University, Shenyang 110819, Liaoning, ChinaThe dynamic recrystallization (DRX) behavior and microstructure evolution of medium-Mn (0.15C–10Mn) steel were investigated through isothermal hot compression tests. The flow stress–strain curves and microstructure analysis, in wide ranges of temperatures (900–1150 °C) and strain rates (10−3 - 1 s−1), were employed to establish constitutive equations and a grain size evolution model. Since the material constants were calculated based on polynomial function of strains, strain compensation was introduced into constitutive analysis. Comparison and verification showed that the constitutive equation had a high predictive ability. The correlation coefficient and average absolute relative error were 0.99 and 4.46%, respectively, which confirm the accuracy and guidance of the model. Metallographic observation was used to implement the grain size evolution analysis of the medium-Mn steel. Microstructure evolution was characterized with a gradual increase in average recrystallized grain size and an obvious expansion in the range of grain size distribution with both deformation temperature and strain rate, which were attributed to the competition between nucleation and grain boundary migration. Besides, a grain size evolution model was established to analyze the microstructure evolution.http://www.sciencedirect.com/science/article/pii/S2238785423003733Medium-Mn steelDynamic recrystallizationMicrostructure evolutionHot compression |
| spellingShingle | Xiaoyun Sun Banglun Wang Yuanpei Duan Qi Liu Xiang Xu Sheng Wang Xianfeng Yang Xue Feng Kinetics and microstructure evolution of dynamic recrystallization of medium-Mn steel during hot working Journal of Materials Research and Technology Medium-Mn steel Dynamic recrystallization Microstructure evolution Hot compression |
| title | Kinetics and microstructure evolution of dynamic recrystallization of medium-Mn steel during hot working |
| title_full | Kinetics and microstructure evolution of dynamic recrystallization of medium-Mn steel during hot working |
| title_fullStr | Kinetics and microstructure evolution of dynamic recrystallization of medium-Mn steel during hot working |
| title_full_unstemmed | Kinetics and microstructure evolution of dynamic recrystallization of medium-Mn steel during hot working |
| title_short | Kinetics and microstructure evolution of dynamic recrystallization of medium-Mn steel during hot working |
| title_sort | kinetics and microstructure evolution of dynamic recrystallization of medium mn steel during hot working |
| topic | Medium-Mn steel Dynamic recrystallization Microstructure evolution Hot compression |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423003733 |
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