The effect of the cooling rate and the Si contents on solidification behavior and phase relation of La-Fe-Si compounds
Solidification behavior and phase relation of LaFe13-xSix alloys was investigated using induction melting/arc melting.Phase formation and structure in induction/arc melted LaFe 13-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 LaFe 13-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 Fe3Si phase,respectively.The results were discussed with respect to the effect of cooling rate.
Rare earth LaFe 13-xSix solidification X-ray diffraction the phase relation
Dong Zhongqi Li Junsuo Chen Jin
College of Materials Science and Engineering, Taiyuan University of technology, Taiyuan 030024, Chin College of Materials Science and Engineering, Taiyuan University of technology, Taiyuan 030024, Chin Hebei College of Industry and Technology, Shijiazhuang 050091 , China
国际会议
上海
英文
82-82
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）