Abstract
Abundant thermodynamic data of pure substances were incorporated in the coupled thermodynamic model of inclusion precipitation and solute micro-segregation during the solidification of heat-resistant steel containing rare earth elements. The liquid inclusions Ce2x Al2y Si1−x−y O z (0 < x < 1, 0 < y < x and z = 1 − x − y) were first introduced to ensure the model more accurately. And the computational method for generation Gibbs free energy of liquid inclusions in molten steel was given. The accuracy of accomplished model was validated through plant trials, lab-scale experiments, and the data published in the literature. The comparisons of results calculated by FactSage with the model were also discussed. Finally, the stable area of liquid inclusions was predicted and the liquid inclusions with larger size were found in the preliminary experiments.
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Acknowledgments
This work was finally supported by the National Natural Science Foundation of China (51374059 and 51304042), the Fundamental Research Funds for the Central Universities (N130402020), and Scientific Research Foundation for Scholars in Yangtze Normal University.
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Manuscript submitted May 15, 2016
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Li, Y., Liu, C., Zhang, T. et al. Liquid Inclusions in Heat-Resistant Steel Containing Rare Earth Elements. Metall Mater Trans B 48, 956–965 (2017). https://doi.org/10.1007/s11663-016-0873-9
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DOI: https://doi.org/10.1007/s11663-016-0873-9