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The interface microstructure evolution and mechanical properties of S32168/Q345R composite plate under different rolling parameters.

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Title: The interface microstructure evolution and mechanical properties of S32168/Q345R composite plate under different rolling parameters.
Authors: Yang, Ruiqing1,2 (AUTHOR), Jiang, Lianyun1,2 (AUTHOR) jiangly2015@126.com, Fang, Jiahui1,2 (AUTHOR), Zhang, Yu1,2 (AUTHOR), Yang, Shuguo3 (AUTHOR) jiangly2015@126.com
Source: Metallurgical Research & Technology. 2026, Vol. 123 Issue 3, p1-15. 15p.
Subjects: Interfacial bonding, Interface structures, Deformations (Mechanics), Kirkendall effect, Mechanical behavior of materials, Recrystallization (Metallurgy), Pressure vessels, Composite plates
Abstract: The interface bonding strength of S32168/Q345R is affected by different process parameters as a composite plate of a pressure vessel. Previous research has focused on the influence of rolling parameters in governing both grain structure optimization and element diffusion on bonding strength but has not deeply explored the nonlinear relationship between rolling speed and interface bonding performance and the coupling effect of temperature and deformation heat on bonding properties. In this work, S32168/Q345R composite plates were prepared by hot rolling with different rolling speeds and reductions, and the microscopic experiments and mechanical properties of the composite plates after rolling were tested. The experimental results indicate that the bonding strength ranges from 390.9 to 548.6 MPa, which is much higher than the 210 MPa required by the international pressure vessel plate. This study shows that different rolling parameters act on the dynamic recrystallization and the heat diffusion affected by the deformation heat and deformation time so as to realize the microstructure optimization and performance optimization. In addition, the evolution of the interface microstructure is dominated by carbon migration: carbon loss on the Q345R side forms a ferrite decarburization layer, and Cr23C6 and TiC2 carbides are formed on the S32168 side. This research elucidates the mechanisms by which various rolling parameters govern bonding strength and explores the formation process of carbonized inclusions and decarburization layer thickness and the influence on the interface bonding strength. [ABSTRACT FROM AUTHOR]
Copyright of Metallurgical Research & Technology is the property of EDP Sciences 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.)
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  Data: The interface microstructure evolution and mechanical properties of S32168/Q345R composite plate under different rolling parameters.
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  Data: <searchLink fieldCode="AR" term="%22Yang%2C+Ruiqing%22">Yang, Ruiqing</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jiang%2C+Lianyun%22">Jiang, Lianyun</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> jiangly2015@126.com</i><br /><searchLink fieldCode="AR" term="%22Fang%2C+Jiahui%22">Fang, Jiahui</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Yu%22">Zhang, Yu</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Shuguo%22">Yang, Shuguo</searchLink><relatesTo>3</relatesTo> (AUTHOR)<i> jiangly2015@126.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Metallurgical+Research+%26+Technology%22">Metallurgical Research & Technology</searchLink>. 2026, Vol. 123 Issue 3, p1-15. 15p.
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  Data: <searchLink fieldCode="DE" term="%22Interfacial+bonding%22">Interfacial bonding</searchLink><br /><searchLink fieldCode="DE" term="%22Interface+structures%22">Interface structures</searchLink><br /><searchLink fieldCode="DE" term="%22Deformations+%28Mechanics%29%22">Deformations (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Kirkendall+effect%22">Kirkendall effect</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+behavior+of+materials%22">Mechanical behavior of materials</searchLink><br /><searchLink fieldCode="DE" term="%22Recrystallization+%28Metallurgy%29%22">Recrystallization (Metallurgy)</searchLink><br /><searchLink fieldCode="DE" term="%22Pressure+vessels%22">Pressure vessels</searchLink><br /><searchLink fieldCode="DE" term="%22Composite+plates%22">Composite plates</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: The interface bonding strength of S32168/Q345R is affected by different process parameters as a composite plate of a pressure vessel. Previous research has focused on the influence of rolling parameters in governing both grain structure optimization and element diffusion on bonding strength but has not deeply explored the nonlinear relationship between rolling speed and interface bonding performance and the coupling effect of temperature and deformation heat on bonding properties. In this work, S32168/Q345R composite plates were prepared by hot rolling with different rolling speeds and reductions, and the microscopic experiments and mechanical properties of the composite plates after rolling were tested. The experimental results indicate that the bonding strength ranges from 390.9 to 548.6 MPa, which is much higher than the 210 MPa required by the international pressure vessel plate. This study shows that different rolling parameters act on the dynamic recrystallization and the heat diffusion affected by the deformation heat and deformation time so as to realize the microstructure optimization and performance optimization. In addition, the evolution of the interface microstructure is dominated by carbon migration: carbon loss on the Q345R side forms a ferrite decarburization layer, and Cr23C6 and TiC2 carbides are formed on the S32168 side. This research elucidates the mechanisms by which various rolling parameters govern bonding strength and explores the formation process of carbonized inclusions and decarburization layer thickness and the influence on the interface bonding strength. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Metallurgical Research & Technology is the property of EDP Sciences 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:
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    Identifiers:
      – Type: doi
        Value: 10.1051/metal/2026036
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 15
        StartPage: 1
    Subjects:
      – SubjectFull: Interfacial bonding
        Type: general
      – SubjectFull: Interface structures
        Type: general
      – SubjectFull: Deformations (Mechanics)
        Type: general
      – SubjectFull: Kirkendall effect
        Type: general
      – SubjectFull: Mechanical behavior of materials
        Type: general
      – SubjectFull: Recrystallization (Metallurgy)
        Type: general
      – SubjectFull: Pressure vessels
        Type: general
      – SubjectFull: Composite plates
        Type: general
    Titles:
      – TitleFull: The interface microstructure evolution and mechanical properties of S32168/Q345R composite plate under different rolling parameters.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Yang, Ruiqing
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            NameFull: Jiang, Lianyun
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            NameFull: Fang, Jiahui
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            NameFull: Zhang, Yu
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            NameFull: Yang, Shuguo
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            – D: 01
              M: 05
              Text: 2026
              Type: published
              Y: 2026
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              Value: 123
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            – TitleFull: Metallurgical Research & Technology
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