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Volume 9 Issue 4
Aug.  2018
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LIU Xin, LI Qiangfeng, WANG Zhigang, ZHANG Yinghui, XIE Jianming, LIU Weining. Hot deformation behavior and constitutive equation of low alloy micro-carbon steel[J]. Nonferrous Metals Science and Engineering, 2018, 9(4): 53-59. DOI: 10.13264/j.cnki.ysjskx.2018.04.009
Citation: LIU Xin, LI Qiangfeng, WANG Zhigang, ZHANG Yinghui, XIE Jianming, LIU Weining. Hot deformation behavior and constitutive equation of low alloy micro-carbon steel[J]. Nonferrous Metals Science and Engineering, 2018, 9(4): 53-59. DOI: 10.13264/j.cnki.ysjskx.2018.04.009
shu

Hot deformation behavior and constitutive equation of low alloy micro-carbon steel

  • 1.

    School of Materials Science and Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China

  • 2.

    State Grid Corporation of China, AC construction branch, Beijing 100031, China

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  • Received Date: March 13, 2018
  • Published Date: August 30, 2018
    Graphical Abstract
    • Abstract
  • By applying Gleeble-3800 Thermal Simulation Tester, we study the thermal deformation behavior of micro-carbon steel at temperatures of 350℃, 400℃, 450℃, 500℃, 550℃, 600℃, 650℃, 700℃, 750℃ and under the conditions of 0.01 s-1, 0.1s-1, 1s-1. The temperature deformation constitutive equation is constructed by analyzing the characteristics of the deformed structure. The results show that the flow stress of micro-carbon steel increases with the rising strain in the initial stage of deformation, and gradually stabilizes after the peak. When the temperature is higher than 750℃, there will be obvious processing softening. With the Sellars-Tegart equation, the heat deformation activation energy Q of micro carbon steel was obtained by fitting the parameters of the model to 364.894 kJ/mol. A flow stress model is established.
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    • References (18)
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