Orientation relationship of eutectoid FeAl and FeAl2

Scherf, A.; Kauffmann, A.; Kauffmann-Weiss, S.; Scherer, T.; Li, X.; Stein, F.; Heilmaier, M.

doi:10.1107/S1600576716000911

Journal of Applied Crystallography Journal of Applied
Crystallography

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Figure 7
Schematic drawings of the crystallographic model based on the determined orientation relationship and interface of FeAl and FeAl₂. A possible orientation relationship of Fe₅Al₈ is also proposed. (a) [111]_Fe₅Al₈ of the high-temperature ∊ phase, $[[1 {\overline 1}0]_{{\rm FeAl}_2}^{\rm Chumak}]$ of FeAl₂ and [111 ]_FeAl are pointing out-of-plane. The interface planes of FeAl₂ and FeAl are $[(114)_{{\rm FeAl}_2}^{\rm Chumak}\,||\, ({\overline 1}01)_{\rm FeAl}]$ . (b) Atomic sites within the interface planes $[({\overline 1}01)_{\rm FeAl}]$ and $[(114)}_{{\rm FeAl}_2}^{\rm Chumak}]$ . Semi-transparent sites are off the interface plane of the particular phases. The drawings are based on VESTA (Momma & Izumi, 2011

) graphics using crystallographic data at 1373 K (Fe₅Al₈) and 1353 K (FeAl₂ and FeAl). The translations between the phases are anticipated or arbitrary. For characterization of the viewing directions, the normal vectors of the lattice planes are used and symbolized by N $[(\ldots)]$ .

JOURNAL OF
APPLIED
CRYSTALLOGRAPHY

ISSN: 1600-5767

Volume 49| Part 2| April 2016| Pages 442-449

https://doi.org/10.1107/S1600576716000911

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