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Effect of O,S and Ce Contents on Ce2O3 and Ce2O2S Inclusions in U71MnG Steel AITranslate

WANG Min; LIU Xiang-jun; YANG Chang-qiao; YANG Ji-chun
School of Materials and Metallurgy,Inner Mongolia University of Science and Technology;School of Materials and Metallurgy,Inner Mongolia University of Science and Technology;School of Materials and Metallurgy,Inner Mongolia University of Science and Technology;School of Materials and Metallurgy,Inner Mongolia University of Science and Technology
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Publisher: Editorial Office of Rare Metals and Cemented Carbides
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Abstract AITranslate

In our country,the large-scale production of rare earth steel has not been achieved mainly due to insufficient understanding of the interaction between rare earth and impurity elements such as O and S in steel.Considering the lack of quantitative analysis of the effect of Ce,O,and S contents on rare earth inclusions in steel,FactSage 7.1 software was used to investigate the interaction between different contents of O,S,and Ce in U71MnG steel,as well as their effects on the precipitation of Ce2O2S and Ce2O3 inclusions.Thermodynamic calculation results show that in the composition system of U71MnG steel,the precipitation of Ce2O3 increases at first and then decreases with the increasing Ce content,and reaches the peak at the ratio of mO/mCeof approximately 1/7.4.The formation of Ce2O2S requires the joint action of O,S,and Ce,and the precipitation of Ce2O2S reaches the peak at the ratio of mO+S/mCeof approximately 1/3.7.SEM images of steel inclusions and statistical results of the number of inclusion particles show that the number of Ce2O3 and Ce2O2S inclusions in the test steel with a Ce content of 0.024%is higher than that in the test steel with a Ce content of 0.016%.And the laws of inclusion precipitation in steel are consistent with thermodynamically calculated results.

KeyWords AITranslate

rare earth inclusion thermodynamics steel Ce2O2S Ce2O3

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Basic Information:

DOI：

Chinese Library Classification Number:TG142.1[金属学及工艺—金属材料]

Citation Information:

In our country,the large-scale production of rare earth steel has not been achieved mainly due to insufficient understanding of the interaction between rare earth and impurity elements such as O and S in steel.Considering the lack of quantitative analysis of the effect of Ce,O,and S contents on rare earth inclusions in steel,FactSage 7.1 software was used to investigate the interaction between different contents of O,S,and Ce in U71MnG steel,as well as their effects on the precipitation of Ce2O2S and Ce2O3 inclusions.Thermodynamic calculation results show that in the composition system of U71MnG steel,the precipitation of Ce2O3 increases at first and then decreases with the increasing Ce content,and reaches the peak at the ratio of mO/mCeof approximately 1/7.4.The formation of Ce2O2S requires the joint action of O,S,and Ce,and the precipitation of Ce2O2S reaches the peak at the ratio of mO+S/mCeof approximately 1/3.7.SEM images of steel inclusions and statistical results of the number of inclusion particles show that the number of Ce2O3 and Ce2O2S inclusions in the test steel with a Ce content of 0.024%is higher than that in the test steel with a Ce content of 0.016%.And the laws of inclusion precipitation in steel are consistent with thermodynamically calculated results.

quote

GB/T 7714-2015 [1] WANG Min, LIU Xiang-jun, YANG Chang-qiao, et al. Effect of O,S and Ce Contents on Ce2O3 and Ce2O2S Inclusions in U71MnG Steel[J]. Rare Metals and Cemented Carbides, 2024(2): 45-49.
MLA [1] WANG Min, et al., "Effect of O,S and Ce Contents on Ce2O3 and Ce2O2S Inclusions in U71MnG Steel." Rare Metals and Cemented Carbides, no. 2, 2024, pp. 45-49.
APA [1] WANG Min, LIU Xiang-jun, YANG Chang-qiao, & YANG Ji-chun. (2024). Effect of O,S and Ce Contents on Ce2O3 and Ce2O2S Inclusions in U71MnG Steel. Rare Metals and Cemented Carbides(2), 45-49.
IEEE [1] WANG Min, LIU Xiang-jun, YANG Chang-qiao, and YANG Ji-chun, "Effect of O,S and Ce Contents on Ce2O3 and Ce2O2S Inclusions in U71MnG Steel," Rare Metals and Cemented Carbides, no. 2, pp. 45-49, 2024. keywords: {rare earth inclusion;thermodynamics;steel;CeOS;CeO}