Characterization of Rapidly Solidified Al65Cu20Fe15 Alloy in Form of Powder or Ribbon |
| L. Lityńska-Dobrzyńskaa, J. Dutkiewicza, K. Stan-Głowińskaa, L. Dembinskib, C. Coddetb and P. Ochinc
aInstitute of Metallurgy and Materials Science, Polish Academy of Sciences, W.S. Reymonta 25, 30-059 Kraków, Poland bUniversité de Technologie de Belfort-Montbeliard, Site de Sevenans, 90010, Belfort, France cInstitut de Chimie et des Matériaux Paris Est, CNRS-Université Paris XII, 2-8 rue Henri Dunant, 94320 Thiais, France |
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| The Al65Cu20Fe15 alloy has been prepared by conventional casting to the mould and by melt spinning or atomisation techniques. The melt spun ribbon was in the form: of fragmented, brittle flakes, atomized powder has spherical shape with average size 17.2 μm. It was found that icosahedral I-phase was the main phase in all types of prepared samples. In the conventionally cast alloy the following phases have been identified additionally: λ-Al13Fe4, τ-AlCu(Fe) and η2-AlCu. In the melt-spun ribbon the formation of η2 is avoided, while in the atomised powder the I-phase coexists with small amount of copper rich τ-phase. In the cast ingot the I-phase form as a product of peritectic reaction λ + L, while in the ribbon and in the powder quasicrystal solidified from the undercooled melt as primary phase and next metastable cubic τ-AlCu(Fe) was formed at the interdendritic areas. Single I-phase grains of the sizes about 1 μm are observed in the ribbon close to the wheel side. |
DOI: 10.12693/APhysPolA.126.512 PACS numbers: 81.05.Bx, 81.30.-t, 61.44.Br, 61.05.cp, 61.05.jm |