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Characterization of complex planar faults in FeAl(B) alloys

Abstract : Complex planar faults were observed by diffraction contrast transmission electron microscopy in a B2 FeAl based alloy containing Ni and B. The comparison of experimental images to simulated ones revealed the detailed structure of these faults that lie on {001} planes with both in-plane and out-of-plane components of the displacement vector. It was deduced that these defects form by segregation of (B-Al vacancies) complexes on a<100> dislocations, leading to various defect structures depending on the screw or edge character of the dislocation.
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Bernard Viguier, Mayerling Martinez, Jacques Lacaze. Characterization of complex planar faults in FeAl(B) alloys. Intermetallics, Elsevier, 2017, 83, pp.64-69. ⟨10.1016/j.intermet.2016.12.005⟩. ⟨hal-02091044⟩

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