【摘 要】
：
Solidification behavior and phase relation of LaFe 13-xSix alloys was investigated using induction melting/arc melting.Phase formation and structure in induction/arc melted LaFel3-xSix alloys has been
【出 处】
：
2012 Postdoctoral Symposium of China on Materials Science &
论文部分内容阅读
Solidification behavior and phase relation of LaFe 13-xSix alloys was investigated using induction melting/arc melting.Phase formation and structure in induction/arc melted LaFel3-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 and cooling rate.Under near equilibrium solidification, 1∶13 phase is difficult to formed form the liquid.Composition with low Si contents (x=0.5 to 1.5) consist mainly α-(Fe,Si) phase, whereas those with x=2.0 and x=3.0 are occurred LaFe2Si2 (1∶2∶2) phase and the lamellar eutectic 1∶2∶2 phase plus Fe3 Si phase, respectively.The results were discussed with respect to the effect of cooling rate.
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