Grain Refinement by Intragranular Nucleation in Si-Mn Steel Modified by the Fe-V-Nb-RE(Ce) Inoculants

Tie Bao Wang; Chun Xiang Cui; Kuo Jia

doi:10.4028/www.scientific.net/AMR.538-541.2260

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 538-541Grain Refinement by Intragranular Nucleation in...

Grain Refinement by Intragranular Nucleation in Si-Mn Steel Modified by the Fe-V-Nb-RE(Ce) Inoculants

Abstract:

The Fe-V-Nb-RE(Ce) alloy was rapidly solidified with melt-spin method, and the nano-sized ribbon was gained with the rolling wheel speed of 45m/s.The microstructure and the grain size of the Fe-V-Nb-RE(Ce) inoculants were performed by SEM and XRD respectively. Subsequently the microstructure of the steel modified by the Fe-V-Nb-Re(Ce) inoculants was also studied. The results show that the average grain size of the nano-scale Fe-V-Nb-RE(Ce) inoculants obtained is 26.1nm and a large mounts of nucleation sites in the steel exist in the form of (V, Nb)C and FeCeSi which effectively increases the nucleation rate and bring about the refinement of austenite grains.

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Periodical:

Advanced Materials Research (Volumes 538-541)

Pages:

2260-2263

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.538-541.2260

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Online since:

June 2012

Authors:

Tie Bao Wang, Chun Xiang Cui, Kuo Jia

Keywords:

Grain Refinement, Microstructure, Nucleation Sites, Si-Mn Steel

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