Metadynamic Recrystallization in the Isothermal Double Compression of CP800 Steel.
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| Title: | Metadynamic Recrystallization in the Isothermal Double Compression of CP800 Steel. |
|---|---|
| Authors: | Yang, Xiaoyu1,2 (AUTHOR), Mi, Zhenli1,2 (AUTHOR) mizl@nercar.ustb.edu.cn, Mu, Wangzhong1,2 (AUTHOR) wangzhong.mu@ltu.se |
| Source: | Materials (1996-1944). Apr2025, Vol. 18 Issue 7, p1549. 13p. |
| Subjects: | Isothermal compression, Grain refinement, Recrystallization (Metallurgy), Manufacturing processes, Grain size |
| Abstract: | The global drive toward decarbonization has spurred industry interest in the compact steel production (CSP) process for manufacturing automotive steel sheets. Understanding the hot deformation behavior, particularly the metadynamic softening mechanism occurring between passes, is essential for evaluating process feasibility under CSP process. This study investigates the metadynamic softening behavior of CP800 steel intended for CSP applications, utilizing isothermal double compression tests performed at the deformation temperatures of 1173, 1273, and 1373 K, strain rates of 0.1,1, and 5.0 s−1, and the interpass times of 1, 10, and 20 s. The softening behavior was assessed through the deformation flow stress–strain curves under varying conditions, and a kinetic equation of metadynamic recrystallization was proposed and validated against experimental data. Additionally, the effect of initial austenite grain sizes of 42 μm and 92 μm on metadynamic recrystallization were analyzed. Results indicate that the final rolling pass temperature should exceed 1173 K to prevent mixed grain structures. Although grain refinement induced by the metadynamic recrystallization in CP800 steel was found to be independent of initial grain size, the final grain size itself remained sensitive to the initial grain dimensions. Adopting lower holding temperature and shorter holding durations prior to rolling is advisable for energy-efficient CSP, provided compositional homogeneity and suitable deformation temperatures are maintained. These insights contribute valuable guidance for optimization CSP process in the production of CP800 steel. [ABSTRACT FROM AUTHOR] |
| Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 184439941 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Metadynamic Recrystallization in the Isothermal Double Compression of CP800 Steel. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Yang%2C+Xiaoyu%22">Yang, Xiaoyu</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mi%2C+Zhenli%22">Mi, Zhenli</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> mizl@nercar.ustb.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Mu%2C+Wangzhong%22">Mu, Wangzhong</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> wangzhong.mu@ltu.se</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Materials+%281996-1944%29%22">Materials (1996-1944)</searchLink>. Apr2025, Vol. 18 Issue 7, p1549. 13p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Isothermal+compression%22">Isothermal compression</searchLink><br /><searchLink fieldCode="DE" term="%22Grain+refinement%22">Grain refinement</searchLink><br /><searchLink fieldCode="DE" term="%22Recrystallization+%28Metallurgy%29%22">Recrystallization (Metallurgy)</searchLink><br /><searchLink fieldCode="DE" term="%22Manufacturing+processes%22">Manufacturing processes</searchLink><br /><searchLink fieldCode="DE" term="%22Grain+size%22">Grain size</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The global drive toward decarbonization has spurred industry interest in the compact steel production (CSP) process for manufacturing automotive steel sheets. Understanding the hot deformation behavior, particularly the metadynamic softening mechanism occurring between passes, is essential for evaluating process feasibility under CSP process. This study investigates the metadynamic softening behavior of CP800 steel intended for CSP applications, utilizing isothermal double compression tests performed at the deformation temperatures of 1173, 1273, and 1373 K, strain rates of 0.1,1, and 5.0 s−1, and the interpass times of 1, 10, and 20 s. The softening behavior was assessed through the deformation flow stress–strain curves under varying conditions, and a kinetic equation of metadynamic recrystallization was proposed and validated against experimental data. Additionally, the effect of initial austenite grain sizes of 42 μm and 92 μm on metadynamic recrystallization were analyzed. Results indicate that the final rolling pass temperature should exceed 1173 K to prevent mixed grain structures. Although grain refinement induced by the metadynamic recrystallization in CP800 steel was found to be independent of initial grain size, the final grain size itself remained sensitive to the initial grain dimensions. Adopting lower holding temperature and shorter holding durations prior to rolling is advisable for energy-efficient CSP, provided compositional homogeneity and suitable deformation temperatures are maintained. These insights contribute valuable guidance for optimization CSP process in the production of CP800 steel. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Materials (1996-1944) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/ma18071549 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 13 StartPage: 1549 Subjects: – SubjectFull: Isothermal compression Type: general – SubjectFull: Grain refinement Type: general – SubjectFull: Recrystallization (Metallurgy) Type: general – SubjectFull: Manufacturing processes Type: general – SubjectFull: Grain size Type: general Titles: – TitleFull: Metadynamic Recrystallization in the Isothermal Double Compression of CP800 Steel. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Yang, Xiaoyu – PersonEntity: Name: NameFull: Mi, Zhenli – PersonEntity: Name: NameFull: Mu, Wangzhong IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 04 Text: Apr2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 19961944 Numbering: – Type: volume Value: 18 – Type: issue Value: 7 Titles: – TitleFull: Materials (1996-1944) Type: main |
| ResultId | 1 |
