<p>In this paper, a pulse current assisted compression test platform is built to investigate the effects of temperature, strain rate, and current density on flow stress. Based on the Johnson-Cook model and considering the physical mechanism of the electroplastic effect, the constitutive equation for Inconel718 under pulsed current is constructed. By compiling the user subroutine Vumat and importing it into Abaqus for simulation, and comparing it with the electric pulse assisted turning experiment, the influence of electroplastic parameters (0–100 A) on chip morphology and cutting force is explored. The research results are expected to provide technical guidance for expanding the application field of Inconel718.</p>

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Establishment of electroplastic constitutive equation and study of deformation mechanism during cutting Inconel718

  • ZhaoPeng Hao,
  • Yongshou Xu,
  • YiHang Fan,
  • Dongliang Zhu

摘要

In this paper, a pulse current assisted compression test platform is built to investigate the effects of temperature, strain rate, and current density on flow stress. Based on the Johnson-Cook model and considering the physical mechanism of the electroplastic effect, the constitutive equation for Inconel718 under pulsed current is constructed. By compiling the user subroutine Vumat and importing it into Abaqus for simulation, and comparing it with the electric pulse assisted turning experiment, the influence of electroplastic parameters (0–100 A) on chip morphology and cutting force is explored. The research results are expected to provide technical guidance for expanding the application field of Inconel718.