Materials Reports  2020, Vol. 34 Issue (Z1): 436-439 |
| METALS AND METAL MATRIX COMPOSITES |
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| Heterogeneous Nucleation Analysis and Grain Refinement of Second Phase VC inHRB500E Steel |
| CHEN Longhai1,2, LI Changrong1,2, LI Zhiying1,2, LI Zhengsong3, LIU Zhanlin3
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1 College of Materials and Metallurgy, Guizhou University, Guiyang 550025, China;
2 Guizhou Province Key Laboratory for Metallurgical Engineering and Process Energy Saving, Guiyang 550025, China;
3 Shougang Shuicheng Iron and Steel (Group) Co., Ltd., Liupanshui 553000, China |
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Abstract Vanadium carbide acts as the nucleation base phase of ferrite or austenite in molten steel during solidification, which promotes the heteroge-neous nucleation of molten steel and refines the grain size of solidified structure. Based on the two-dimensional mismatch theory, the promotion of vanadium carbide compounds on the non-uniform nucleation ability of molten steel was calculated. The solid solution of vanadium carbide at different temperatures was calculated by thermodynamics. The refinement effect of vanadium carbide compounds on the solidification structure of molten steel was verified by scanning electron microscope (SEM) analysis.
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Published: 01 July 2020
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| Fund:This work was financially supported by the National Natural Science Foundation of China (51864013) and Guizhou Science and Technlogy Cooperation Plan Project ([2018]5781). |
| About author:: Longhai Chen, master, research direction: new metallurgical technology and new theory, published a paper, the second prize of the National Undergraduate Metallurgical Science and technology competition ; Changrong Li, Professor (Level 2) of Guizhou University and Master's supervisor, has taught in College of Materials and Metallurgy, Guizhou University from December 2005. More than 40 papers have been published in academic journals at home and abroad. The main research directions of the team include: new me-tallurgical processes and theories ; functional materials ; development of new automotive steels ; presiding over one project of the National Natural Science Foundation of China, one project of the planning category of the Guizhou Provincial Science and Technology Department, two key industrial projects of the Guizhou Provincial Science and Technology Department, and the Guizhou Provincial Science and Technology Department. There are 1 key social deve-lopment projects and 3 important horizontal projects. He won the first prize of Guizhou Science and Technology Progress Award, the first prize winner, the School of Metallurgy and Ecology of Beijing University of Science and Technology awarded by the Central Organization Department, and the visiting scholar of “Light of the West” of the Central Organization Department. |
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