Effect of Intercritical Deformation on Microstructure and Mechanical Properties of Quenching and Partitioning Low Carbon Multiphase High-Strength Steel
Low carbon multiphase high strength steel is widely used in the automobile industry. In this work, the effect of intercritical deformation on the partitioning of alloying elements and the evolution of microstructure, as well as the effect of retained austenite stability on mechanical properties, wer...
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| Format: | Article |
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MDPI AG
2022-11-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/12/2010 |
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| author | Zhiqiang Yao Mingshan Zhang Yuan Zhang Hongbin Li Haiwei Xu Yaqiang Tian Liansheng Chen |
| author_facet | Zhiqiang Yao Mingshan Zhang Yuan Zhang Hongbin Li Haiwei Xu Yaqiang Tian Liansheng Chen |
| author_sort | Zhiqiang Yao |
| collection | DOAJ |
| description | Low carbon multiphase high strength steel is widely used in the automobile industry. In this work, the effect of intercritical deformation on the partitioning of alloying elements and the evolution of microstructure, as well as the effect of retained austenite stability on mechanical properties, were studied in a low carbon steel. The results demonstrate that the intercritical deformation enhances the C, Mn partition from ferrite to austenite during annealing at 770 ℃, and the volume fraction of the retained austenite increased from 8.8% to 12.3%. The DIQ&PB sample shows good balance between strength (1226.5 MPa) and ductility (24.4%), whose product of strength and elongation reached a larger value of 29926.6 MPa·% due to the intercritical deformation. This research provides theoretical guidance for the process design of automobile high-strength steels, considering the integration between rolling and heat cycles. |
| first_indexed | 2024-03-09T16:06:09Z |
| format | Article |
| id | doaj.art-6a53f301213a4cac965c4623546fda71 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T16:06:09Z |
| publishDate | 2022-11-01 |
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| series | Metals |
| spelling | doaj.art-6a53f301213a4cac965c4623546fda712023-11-24T16:39:19ZengMDPI AGMetals2075-47012022-11-011212201010.3390/met12122010Effect of Intercritical Deformation on Microstructure and Mechanical Properties of Quenching and Partitioning Low Carbon Multiphase High-Strength SteelZhiqiang Yao0Mingshan Zhang1Yuan Zhang2Hongbin Li3Haiwei Xu4Yaqiang Tian5Liansheng Chen6Key Laboratory of the Ministry of Education for Modern Metallurgy Technology, North China University of Science and Technology, Tangshan 063210, ChinaKey Laboratory of the Ministry of Education for Modern Metallurgy Technology, North China University of Science and Technology, Tangshan 063210, ChinaKey Laboratory of the Ministry of Education for Modern Metallurgy Technology, North China University of Science and Technology, Tangshan 063210, ChinaKey Laboratory of the Ministry of Education for Modern Metallurgy Technology, North China University of Science and Technology, Tangshan 063210, ChinaTechnology Center, Shougang Jingtang United Iron & Steel Co., Ltd., Tangshan 063200, ChinaKey Laboratory of the Ministry of Education for Modern Metallurgy Technology, North China University of Science and Technology, Tangshan 063210, ChinaKey Laboratory of the Ministry of Education for Modern Metallurgy Technology, North China University of Science and Technology, Tangshan 063210, ChinaLow carbon multiphase high strength steel is widely used in the automobile industry. In this work, the effect of intercritical deformation on the partitioning of alloying elements and the evolution of microstructure, as well as the effect of retained austenite stability on mechanical properties, were studied in a low carbon steel. The results demonstrate that the intercritical deformation enhances the C, Mn partition from ferrite to austenite during annealing at 770 ℃, and the volume fraction of the retained austenite increased from 8.8% to 12.3%. The DIQ&PB sample shows good balance between strength (1226.5 MPa) and ductility (24.4%), whose product of strength and elongation reached a larger value of 29926.6 MPa·% due to the intercritical deformation. This research provides theoretical guidance for the process design of automobile high-strength steels, considering the integration between rolling and heat cycles.https://www.mdpi.com/2075-4701/12/12/2010multiphase steelintercritical deformationquenching and partitioningretained austeniteTRIP effect |
| spellingShingle | Zhiqiang Yao Mingshan Zhang Yuan Zhang Hongbin Li Haiwei Xu Yaqiang Tian Liansheng Chen Effect of Intercritical Deformation on Microstructure and Mechanical Properties of Quenching and Partitioning Low Carbon Multiphase High-Strength Steel Metals multiphase steel intercritical deformation quenching and partitioning retained austenite TRIP effect |
| title | Effect of Intercritical Deformation on Microstructure and Mechanical Properties of Quenching and Partitioning Low Carbon Multiphase High-Strength Steel |
| title_full | Effect of Intercritical Deformation on Microstructure and Mechanical Properties of Quenching and Partitioning Low Carbon Multiphase High-Strength Steel |
| title_fullStr | Effect of Intercritical Deformation on Microstructure and Mechanical Properties of Quenching and Partitioning Low Carbon Multiphase High-Strength Steel |
| title_full_unstemmed | Effect of Intercritical Deformation on Microstructure and Mechanical Properties of Quenching and Partitioning Low Carbon Multiphase High-Strength Steel |
| title_short | Effect of Intercritical Deformation on Microstructure and Mechanical Properties of Quenching and Partitioning Low Carbon Multiphase High-Strength Steel |
| title_sort | effect of intercritical deformation on microstructure and mechanical properties of quenching and partitioning low carbon multiphase high strength steel |
| topic | multiphase steel intercritical deformation quenching and partitioning retained austenite TRIP effect |
| url | https://www.mdpi.com/2075-4701/12/12/2010 |
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