Abstract
The alloy system Ti–Fe(–O, –Si) shows a great variety of stable and metastable solid phases including structurally complex phases such as quasicrystals and approximant phases. In this work the change in phase selection during solidification as a function of composition on going from the binary Ti 72.3 Fe 27.7 over the ternary Ti 69.4 Fe 26.6 O 4.0 to the quaternary Ti 65.4 Fe 25.0 Si 5.7 O 3.9 alloy (numbers indicate at.%) is investigated. The liquid samples are processed and analyzed in situ using a combination of the electromagnetic levitation technique and energy-dispersive diffraction of synchrotron radiation. This allows us to directly determine the crystal structures of the solid phases formed during solidification.
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