Abstract
To optimize the comprehensive mechanical performance of the rolled piece in three-roll skew rolling (TRSR), a more exquisite and uniform microstructure of the rolled piece must be obtained. In this paper, the evolution laws of the microstructure are obtained by exploring the forming process of TRSR hollow axles. First, the optimum process parameters for the microstructure of the rolled piece are obtained by orthogonal testing. Second, taking the hollow axle of LZ50 steel as the research object and combined with the results of the orthogonal test, a thermal-force-microstructure coupled finite element model of the TRSR hollow axle is established by adopting SIMUFACT software. Third, a total of nine points are selected along the axial and radial directions of the rolled piece as observation points to research the variation laws of the average grain size at different positions with time. Fourth, the evolution and distribution laws of the average grain size and recrystallization volume fraction during the TRSR of hollow axles are researched. Finally, combined with the TRSR experiment, the variations in microstructure in the experiment are consistent with the simulation results, which verifies the reliability of the model.
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Funding
The project is supported by the National Natural Science Foundation of China (Grant No. 51975301), Ningbo Scientific and Technology Plan Project (Grant No. 2020Z110)
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Conceptualization, J.T. W. and X.D. S.; Modeling and simulation, J.T. W. and S. Z.; Data analysis, J.T. W and Y.X. X; Data interpretation, J.T. W and S.X. L.; Experiment, J.T. W, Z. P and J. B.; Writing—original draft preparation, J.T. W; Writing—review and editing, X.D. S. All authors read and approved the final manuscript.
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Wang, J., Shu, X., Zhang, S. et al. Research on microstructure evolution of the three-roll skew rolling hollow axle. Int J Adv Manuf Technol 118, 837–847 (2022). https://doi.org/10.1007/s00170-021-07991-7
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DOI: https://doi.org/10.1007/s00170-021-07991-7