ACTA

Formation of the Icosahedral Al-Cu-Fe Phase by Solid State Reaction

D.A. Shulyatev^a, A.S. Nigmatulin^a, M.A. Chernikov^a, M.V. Klyueva^a, D.S. Shaitura^b and E.A. Golovkova^b
^aNational University of Science and Technology "MISIS", Leninskiy prospect, 4, Moscow 119049, Russia
^bNational Research Centre "Kurchatov Institute", pl. Akademika Kurchatova 1, Moscow 123182, Russia

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Al-Cu-Fe alloys with a nominal composition of Al₆₃Cu₂₄Fe₁₃, Al₆₂Cu_25.5Fe_12.5 and Al₆₅Cu₂₀Fe₁₅ have been fabricated by solid-state reaction at 550, 650, and 750°C. The synthesized alloys mainly consist of icosahedral Al₆₅Cu₂₀Fe₁₅, body-centered cubic β-AlFe(Cu) and monoclinic λ-Al₁₃Fe₄ phases. After synthesis under optimal conditions the fraction of the icosahedral phase was 100, 80, and 85 weight per cent in Al₆₃Cu₂₄Fe₁₃, Al₆₂Cu_25.5Fe_12.5, and Al₆₅Cu₂₀Fe₁₅, respectively.

DOI: 10.12693/APhysPolA.126.581
PACS numbers: 61.44.Br, 81.05.Bx, 81.20.Ev