Metallurgical and Materials Transactions A

, Volume 50, Issue 2, pp 573–580 | Cite as

Effect of Strain Rate on the Bainitic Transformation in Fe-C-Mn-Si Medium-Carbon Bainitic Steels

  • Guanghui Chen
  • Guang XuEmail author
  • Hatem S. Zurob
  • Haijiang Hu
  • Xiangliang Wan


The effect of strain rate on the kinetics of the bainitic transformation in a Fe-C-Mn-Si medium-carbon bainitic steel was investigated by dilatometry, metallography, and X-ray diffraction. The results indicate that the bainitic transformation is affected by the strain rate. The bainitic transformation is significantly promoted by deformation at a low strain rate of 0.01 s−1, and the amount of bainite increases further when the strain rate increases to 0.1 s−1. However, as the strain rate increases further to 1.0 and 5.0 s−1, the extent to which deformation promotes the bainitic transformation decreases, and the amount of bainitic transformation is smaller than that at low strain rates. The amount of bainite tends to be constant with increasing strain rate from 1.0 to 5.0 s−1. In addition, the volume fraction of retained austenite shows the same trend as the amount of bainite, indicating that chemical stabilization plays a key role in determining the amount of retained austenite. Moreover, the strain rate has no significant effect on the bainite morphology.



The authors gratefully acknowledge the financial supports from the National Natural Science Foundation of China (NSFC) (Nos. 51874216 and 51704217) and the Major Projects of Technology Innovation of Hubei Province (No. 2017AAA116).


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Copyright information

© The Minerals, Metals & Materials Society and ASM International 2018

Authors and Affiliations

  • Guanghui Chen
    • 1
  • Guang Xu
    • 1
  • Hatem S. Zurob
    • 2
  • Haijiang Hu
    • 1
  • Xiangliang Wan
    • 1
  1. 1.The State Key Laboratory of Refractories and Metallurgy, Hubei Collaborative Innovation Center for Advanced SteelsWuhan University of Science and TechnologyWuhanChina
  2. 2.Department of Materials Science and EngineeringMcMaster UniversityHamiltonCanada

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