Issue |
Metall. Res. Technol.
Volume 121, Number 5, 2024
|
|
---|---|---|
Article Number | 508 | |
Number of page(s) | 9 | |
DOI | https://doi.org/10.1051/metal/2024061 | |
Published online | 04 October 2024 |
Original Article
Numerical understanding of MnS precipitation influence on solute micro-segregation during solidification
1
Center for Advanced Solidification Technology (CAST) of School of Materials Science and Engineering Shanghai University, and State Key Laboratory of Advanced Special Steel, Shanghai 200444, PR China
2
BAOWU JFE Special Steel Co., Ltd, Shaoguan 512000, PR China
* e-mail: fujianxun@shu.edu.cn
Received:
6
March
2024
Accepted:
14
July
2024
To illuminate the effects of MnS precipitation on solute micro-segregation, a coupled model of micro-segregation and MnS precipitation was built by the finite-difference method (FDM). Sulfur-bearing steel system with contents of S at 0–0.1 wt.% and C at 0–0.8 wt.% was used to analyze the influence of MnS precipitation on solidification behavior. The results show that MnS precipitation begin to affect solidus temperature and zero strength temperature (ZST) when the content of S and C reaches 0.001 wt.% and 0.085%, respectively. The micro-segregation of Mn and S are suppressed by MnS precipitation. The micro-segregation ratio of sulfur drops from 45.80 to 20.30, from 2.29 to 1.90 for manganese. At the same time, MnS precipitation makes the solidification finish about 10 °C in advance, resulting in the intensified micro-segregation of C, Si, and P. Besides, MnS precipitation also affectes the inter-dendritic distribution of solutes during solidification.
Key words: MnS precipitation / sulfur-bearing steel / micro-segregation / numerical analysis
© EDP Sciences, 2024
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.