Structural transformations in Al85Ni7Fe4La4 alloy under carbon ion irradiation

Abstract

The amorphous structure of aluminum alloy doped with transition (Fe, Ni) and rare earth (La) metals crystallizes with the formation of a multiphase nanocrystalline composite under irradiation with fast 38-MeV ¹²C⁺³ ions at a fluence of Φ = 5 × 10¹⁶ particles/cm². The microhardness of the irradiated amorphous–nanocrystalline composite is higher than that of the unirradiated amorphous alloy. No phase transformations are observed in the polycrystalline state. The morphology of phases slightly changes owing to partial dissolution and coagulation of intermetallic compounds.