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Characterization and Modelling of High Temperature Flow Behaviour of V Modified 2.25Cr-1Mo Heat Resistant Steel Plate

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Abstract

In order to study the high temperature flow behaviour of the V modified 2.25Cr-1Mo steel plate to guide the industrial rolling practice, the hot compression tests were carried out at the temperatures from 900 °C to 1150 °C and the strain rates from 0.01 s−1 to 1 s−1 on Thermecmastor-Z equipment. Based on the experimental data of the hot compression tests, a kind of Arrhenius-type constitutive equation was developed. The equation can accurately show the relationship between the flow stress and the deformation temperature, the strain and the strain rate. The measured true stress-true strain curves exhibit two kinds of flow stress curves. Moreover, the forming mechanisms of these two types curves were explained by softening, wok hardening theory as well as metallographic and hardness experimental results. The accuracy of the developed Arrheniustype constitutive equation was identified by three kinds of statistic parameters and also by comparison of the measured and predicted data. The reasonable value of the three types of statistic parameters and the good agreement between the experimental and predicted data can confirm the validity of the developed Arrheniustype constitutive equation for V modified 2.25Cr-1Mo heat resistant steel plate.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Northeastern University, Shenyang, 110819, China

    Zili Liu  (刘自立) & Chunming Liu  (刘春明)

  2. Central Research Institute (R&D Center), Baoshan Iron & Steel Co. Ltd., Shanghai, 201900, China

    Zili Liu  (刘自立), Jianhua Ding & Hanqian Zhang

Authors
  1. Zili Liu  (刘自立)
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  2. Chunming Liu  (刘春明)
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  3. Jianhua Ding
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  4. Hanqian Zhang
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Corresponding author

Correspondence to Chunming Liu  (刘春明).

Additional information

Funded by the New Product Research Program (No.X18ECQ0A00) of Baoshan Iron & Steel Co. Ltd

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Liu, Z., Liu, C., Ding, J. et al. Characterization and Modelling of High Temperature Flow Behaviour of V Modified 2.25Cr-1Mo Heat Resistant Steel Plate. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 35, 192–199 (2020). https://doi.org/10.1007/s11595-020-2243-3

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  • DOI: https://doi.org/10.1007/s11595-020-2243-3

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