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TONG Zhiyuan, GONG Xuhui. Physical Constitutive Model of Tensile Plastic Strain for 10CrNi8MoV Steel[J]. Development and Application of Materials, 2022, 37(5): 11-15.
Citation: TONG Zhiyuan, GONG Xuhui. Physical Constitutive Model of Tensile Plastic Strain for 10CrNi8MoV Steel[J]. Development and Application of Materials, 2022, 37(5): 11-15.
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Physical Constitutive Model of Tensile Plastic Strain for 10CrNi8MoV Steel

  • Luoyang Ship Material Research Institute, Luoyang 471023, China

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  • Received Date: December 20, 2021
  • Available Online: November 11, 2022
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    • Abstract
  • The tensile stress-strain curves of 10CrNi8MoV steel are obtained by controlling the temperature and the strain rate. The flow stress is decomposed into thermal activation stress and non-thermal activation stress according to dislocation dynamics, and the influence of viscous resistance is ignored. Based on the analysis of plastic deformation process, a dislocation spacing evolution function is introduced into Kocks thermal activation equation, and the change of non-thermal activation stress is described by linear strengthening model, so the physical constitutive model of 10CrNi8MoV steel is established. The model can well describe the plastic deformation behavior of 10CrNi8MoV steel in the condition of low strain rate and wide temperature range.
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    • References (12)
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