Effect of hot working process on the grain size of 316LN austenitic stainless steels

Xu Haijian; Qiao Xin; Guo Cheng; Liu Liu; Yang Yuze; Sha Xiaochun

doi:10.7513/j.issn.1004-7638.2022.04.026

Volume 43 Issue 4

Sep. 2022

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Article Navigation > IRON STEEL VANADIUM TITANIUM > 2022 > 43(4): 173-177

Xu Haijian, Qiao Xin, Guo Cheng, Liu Liu, Yang Yuze, Sha Xiaochun. Effect of hot working process on the grain size of 316LN austenitic stainless steels[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(4): 173-177. doi: 10.7513/j.issn.1004-7638.2022.04.026

Citation:

Xu Haijian, Qiao Xin, Guo Cheng, Liu Liu, Yang Yuze, Sha Xiaochun. Effect of hot working process on the grain size of 316LN austenitic stainless steels[J]. IRON STEEL VANADIUM TITANIUM, 2022, 43(4): 173-177. doi: 10.7513/j.issn.1004-7638.2022.04.026

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Effect of hot working process on the grain size of 316LN austenitic stainless steels

doi: 10.7513/j.issn.1004-7638.2022.04.026

1.
Anshan Iron & Steel Co., Ltd., Anshan 114009, Liaoning, China
2.
Anshan Iron & Steel Construction Co., Ltd., Anshan 114009, Liaoning, China

Received Date: 2022-01-20
Publish Date: 2022-09-14

Abstract

Abstract

The grain morphologies in 316LN austenitic stainless steel were observed by Zaiss Imager metallographic microscope. The effects of deformation temperatures, deformation rates and solution temperatures on the grain size of 316LN steel were systematically studied. The experimental results show that the dynamic recrystallization (DRX) easily occurs with the increasing deformation temperatures and deformation rates, which is helpful for the grain refinement in 316LN steel. The orders of grain size at different position of forged sample from large to small after forging are the core, 1/4 diameter, and the surface. The grain size after deformation can reach about grade 6 when the deformation is 30% at 1 050 ℃. The solution treatment has a positive effect on the grain homogenization. According to the Jmat-Pro calculation and solution treatment results, too high temperature will cause the grains coarsening, while too low temperature can easily lead to precipitation of Cr₂N, which affects the plasticity and corrosion resistance of the steels. The solution treatment temperature should be controlled at 1 020~1 040 ℃.
- 316LN austenitic stainless steel,
- grain size,
- deformation temperature,
- solution temperature,
- deformation rate

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References(11)

References

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