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Materials Science and Technology Volume 39, 2023 - Issue 6
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Research Article

Effect of electropulsing intensity on nucleation of TiN in 321 stainless steel

Dongjian Huanga School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan, People’s Republic of ChinaView further author information
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Zhenghai Zhua School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan, People’s Republic of ChinaCorrespondence[email protected]
ORCID Iconhttps://orcid.org/0000-0002-8696-1894View further author information
ORCID Icon,
Xiang Zhenga School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan, People’s Republic of ChinaView further author information
,
Zixuan Xiaoa School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan, People’s Republic of ChinaView further author information
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Lijun Xiaob National Engineering Research Center of Continuous Casting Technology, Central Iron and Steel Research Institute, Beijing, People’s Republic of ChinaView further author information
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Chengcheng Yanga School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan, People’s Republic of ChinaView further author information
&
Tengfei Zhaoa School of Metallurgical Engineering, Anhui University of Technology, Ma’anshan, People’s Republic of ChinaView further author information
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Pages 736-743 | Received 08 Jul 2022, Accepted 17 Oct 2022, Published online: 06 Nov 2022
 
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ABSTRACT

In the process of titanium microalloyed steel continuous casting, tiny TiN can refine solidification structures, while thick TiN will affect casting. In this paper, the experimental results showed that electropulsing could refine the size of TiN precipitates and improve the nucleation rate of the TiN precipitates. The larger electropulsing intensity resulted in a better effect. The modelling results showed that electropulsing could reduce the nucleation barrier of TiN in the molten steel and the two-phase region. In addition, the larger the electropulsing intensity and the higher the temperature, the better the promotion effect is. This research is of great significance for solving the problem of nozzle clogging and solidification microstructure refinement of titanium microalloyed steel.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported financially by the National Natural Science Foundation of China [Nos. 51974003].

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