Abstract
Stable structures of Fe-Si-Al ternary alloys and Fe-Si and Fe-Al binary alloys containing up to about 40 at% solute atoms were investigated by means of transmission electron microscopy. The following results were obtained. Two types of phase separation, B2+DO3 andα + DO3 were observed in the alloys whose compositions lie in a narrow band connecting Fe-10 to 14 at% Si with Fe-20 to 25 at % Al and also in the neighbourhood of a Fe-30 at%Al-3 at% Si alloy. Such compositions of the alloys are located in the phase boundary of B2 and DO3 single phases orα and DO3 single phases. The phase separation in the Fe-Si-Al and Fe-Si alloys produce the 〈100〉 modulated structure which differs from the morphology formed by the phase separation of the Fe-Al system.
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Miyazaki, T., Kozakai, T. & Tsuzuki, T. Phase decompositions of Fe-Si-Al ordered alloys. J Mater Sci 21, 2557–2564 (1986). https://doi.org/10.1007/BF01114307
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DOI: https://doi.org/10.1007/BF01114307