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<p>The microscopic residual stress in bearing ring was systematically analyzed. Nanoindentation test results and dimensionless analysis was used to precisely obtain deformation constitutive relationship for martensite, residual austenite, and tempered martensite. The Voronoi method was combined with the Monte Carlo algorithm to build a mesoscale model. Macroscopic residual stresses after heat treatment were applied as the load of mesoscale model to obtain the microscopic residual stress. The shape and distribution of primary carbides significantly affect the distribution of microscopic residual stress. The difference of deformation capacity between carbides and the matrix leads to local microscopic stress concentration at phase interface.</p> Graphical Abstract

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Mesoscopic Modeling and Simulation of Microscopic Residual Stress for 8Cr4Mo4V Steel Bearing Ring After Heat Treatment

  • 期刊论文

  • 发表日期：

    2025年6月26日

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  • Tao Xia,
  • Ziqian Chen,
  • Tianpeng Song,
  • Puchang Cui,
  • Yong Liu,
  • Jingchuan Zhu

摘要

The microscopic residual stress in bearing ring was systematically analyzed. Nanoindentation test results and dimensionless analysis was used to precisely obtain deformation constitutive relationship for martensite, residual austenite, and tempered martensite. The Voronoi method was combined with the Monte Carlo algorithm to build a mesoscale model. Macroscopic residual stresses after heat treatment were applied as the load of mesoscale model to obtain the microscopic residual stress. The shape and distribution of primary carbides significantly affect the distribution of microscopic residual stress. The difference of deformation capacity between carbides and the matrix leads to local microscopic stress concentration at phase interface.

Graphical Abstract