Effect of tellurium on the deformation of sulfides in rolling process

Shen Ping; Wang Dong; Zhang Hao; Yang Qiankun; Ai Kenan; Zeng Zhiqi; Fu Jianxun

doi:10.7513/j.issn.1004-7638.2021.03.027

Volume 42 Issue 3

Jun. 2021

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Shen Ping, Wang Dong, Zhang Hao, Yang Qiankun, Ai Kenan, Zeng Zhiqi, Fu Jianxun. Effect of tellurium on the deformation of sulfides in rolling process[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 180-186. doi: 10.7513/j.issn.1004-7638.2021.03.027

Citation:

Shen Ping, Wang Dong, Zhang Hao, Yang Qiankun, Ai Kenan, Zeng Zhiqi, Fu Jianxun. Effect of tellurium on the deformation of sulfides in rolling process[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 180-186. doi: 10.7513/j.issn.1004-7638.2021.03.027

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Effect of tellurium on the deformation of sulfides in rolling process

doi: 10.7513/j.issn.1004-7638.2021.03.027

1.
Center for Advanced Solidification Technology (CAST), State Key Laboratory of Advanced Special Steel, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
2.
Angang Steel Co.,Ltd., Anshan 114000, Liaoning , China

Received Date: 2020-10-23
Publish Date: 2021-06-10

Abstract

Abstract

Modification of MnS inclusion by Te is one of the most efficient methods to improve the morphology and distribution of MnS inclusions. However, previous researches did not generate acceptable opinions on the deformation behaviors of MnS inclusions during the rolling process after adding Te. In the present study, the existing form of Te in the 38MnVS6 steel was detected by SEM-EDS. Gleeble-3500 was employed to simulate the rolling process. The hardness of MnS inclusions and steel matrix was measured and the statistics of inclusions were performed to analyze the effect of Te on the deformability of inclusions. The results show that Te initially dissolves in MnS inclusion after adding a small amount of Te. When the Te content reaches 130 ×10⁻⁶, MnTe starts to generate. After hot-pressing, the inclusions were deformed. With the increase of Te content, the aspect ratio of inclusions decreases from 2.3 to approximately 1.8 and gradually reaches a constant value. The hardness determination result indicates that the deformation resistance of inclusions is not caused by the increase of inclusion hardness, since the hardness ratio H_inclusion/H_matrix keeps relatively constant after adding different Te content. The statistics of inclusions prove that the inclusion with a small diameter shows low aspect ratio after hot-pressing. The addition of Te can reduce the size of inclusions, leading to less deformation of inclusions.
- 38MnVS6,
- Te,
- MnS inclusion,
- Gleeble

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References(15)

References

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