Transactions of Materials and Heat Treatment

Title：Forming and microstructure evolution of 30CrMoA thin wall cylinders

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ClassificationCode：TG376

year,vol(issue):pagenumber：2019,44(8):71-79

Abstract：

The thermal compression experiment was conducted by Gleeble-3800, the constitutive equation was calculated and the dynamic recrystallization model of 30CrMoA was established. The extruding and thinning drawing of 30CrMoA thin wall cylinders were optimized by the finite element analysis software, and the comparison of simulation and experiment was carried out. The results show that the smallest grain size of extrusion can be obtained when the deformation temperature is 1100 ℃ and the extrusion speed is 150 mm·s-1, and the optimum grain size of thining drawing parts is obtained when the deformation temperature is 970 ℃ and the extrusion speed is 50 mm·s-1. The consistency of simulation and experiment results indicate that the microstructure evolution of 30CrMoA can be predicted by the above constitutive equation and dynamic recrystallization model, which provides a basis for further research on the forming and microstructure evolution of 30CrMoA parts under thermal deformation.

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作者简介：徐蒙蒙（1995-），男，硕士 E-mail：2515649222@qq.com 通讯作者：李洪波（1963-），男，博士，教授 E-mail：lhb@ysu.edu.cn

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