Abstract
By use of melt-spinning rapid solidification process, it has been demonstrated that a single perovskite carbide phase (Fe 3AlC x , k) can be produced for an experimental Fe 3AlC (Fe-14 wt% Al-4 wt% C) alloy, which initially possessed a complex ingot structure. It was also found that the melt-spun alloy contained a very uniform microstructure consisting of extremely fine grains. In addition, the antiphase domains of the κ-carbide phase were observed to be retained interior of each grain, indicating that the alloy would solidify into a disordered fee austenite phase, followed by an Al-L'l 2 ordering transformation to form the κ-carbide phase, during the rapid solidification process.
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