Solidification Behavior and Phase Relation of Arc Melting La-Fe-Si Alloys

Abstract:

Solidification behavior and phase relation of LaFe13-xSix alloys was investigated using arc melting. Phase formation and structure in arc melted LaFe13-xSix alloys has been investigated by means of power X-ray diffraction analysis and scanning electron microscopy. The results have shown that La(Fe,Si)13 (1:13) phase is a peritectic phase and the solidification behavior and phase relations of LaFe13-xSix alloys are different with Si contents. Under arc melting condition, composition with low Si contents (x=0.5 to 1.5) consist mainly of α-(Fe,Si) phase the same as induction melting. Composition with high Si contents (x=2.0 to 3.0) consists mainly of 1:13 phase. The results were discussed with respect to the effect of cooling rate.

• Periodical: Advanced Materials Research (Volumes 602-604)
• Pages: 2130-2135
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.602-604.2130
• Online since: December 2012
• Authors: Zhong Qi Dong, Jin Chen, Jun Li Jia
• Keywords: LaFe_13-xSi_x, Phase Relation, Rare Earth (RE), Solidification, X-Ray Diffraction (XRD)

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