Abstract
A few problems are still remained in a single bulk β-FeSi2 formation from liquid phase. As the first step of a single bulk β-FeSi2 formation from a solid reaction between highly oriented two phases, unidirectional solidification method was applied to the FeSi2 composition alloy. The growth rates were changed from 1.7μm/s to 5.4μm/s. The typical rod type eutectic was formed and the matrix was α phase and the rod was ε phase. The size of the phase increased with decrease of the growth rate. The matrix phase was a single crystal below 3.4μm/s and its orientation was <100>. All of phase were alligned to <100> independent of growth rate.
