Research on microstructural evolution and dynamic recrystailization behavior of JB800 bainitic steel by FEM

Qingjun Chen, Yonglin Kang, Hao Yu, Chunmei Wang, Chengxiang Li

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    Qingjun Chen, Yonglin Kang, Hao Yu, Chunmei Wang, and Chengxiang Li, Research on microstructural evolution and dynamic recrystailization behavior of JB800 bainitic steel by FEM, J. Univ. Sci. Technol. Beijing , 15(2008), No. 3, pp.250-254. https://dx.doi.org/10.1016/S1005-8850(08)60047-X
    Qingjun Chen, Yonglin Kang, Hao Yu, Chunmei Wang, and Chengxiang Li, Research on microstructural evolution and dynamic recrystailization behavior of JB800 bainitic steel by FEM, J. Univ. Sci. Technol. Beijing , 15(2008), No. 3, pp.250-254. https://dx.doi.org/10.1016/S1005-8850(08)60047-X
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    Research on microstructural evolution and dynamic recrystailization behavior of JB800 bainitic steel by FEM

    • School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

    • Jinan Iron and Steel Co. Ltd., Jinan 250101, China

    基金项目: 

    This study was financially supported by the National Natural Science Foundation of China (No. 50334010)

      通信作者:

      Qingjun Chen E-mail: cqj308632.student@sina.com

    中文摘要

    Single pass compression tests were conducted on Gleeblel500 thermal simulator. The effect of different deformation parameters on the grain size of dynamically recrystallized austenite was analyzed. A mathematical model of dynamic recrystallization and a material database of JB800 steel, whose tensile strength is above 800 MPa, were set up. A subprogram was compiled using Fortran language and called by Marc finite element software. A thermal coupled elastoplastic finite element model was established to simulate the compression process. The grain size of recrystallized austenite obtained by different recrystallization models was simulated. The results show that the optimized dynamic recrystallization model of JB800 bainitic steel has a higher precision and yields good agreement with metallographic observations.

     

    Materials

    Research on microstructural evolution and dynamic recrystailization behavior of JB800 bainitic steel by FEM

    Author Affilications

      • School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

      • Jinan Iron and Steel Co. Ltd., Jinan 250101, China

    • Funds: 

      This study was financially supported by the National Natural Science Foundation of China (No. 50334010)

    • Received: 09 May 2007;
    Single pass compression tests were conducted on Gleeblel500 thermal simulator. The effect of different deformation parameters on the grain size of dynamically recrystallized austenite was analyzed. A mathematical model of dynamic recrystallization and a material database of JB800 steel, whose tensile strength is above 800 MPa, were set up. A subprogram was compiled using Fortran language and called by Marc finite element software. A thermal coupled elastoplastic finite element model was established to simulate the compression process. The grain size of recrystallized austenite obtained by different recrystallization models was simulated. The results show that the optimized dynamic recrystallization model of JB800 bainitic steel has a higher precision and yields good agreement with metallographic observations.

     

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