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In situ diffraction studies of the phase selection in undercooled Ti–Fe–Si–O melts by O. Heinen; D. Holland-Moritz; D.M. Herlach; K.F. Kelton is a Engineering article available to read on EtoBox.

What is In situ diffraction studies of the phase selection in undercooled Ti–Fe–Si–O melts about?

A time-resolved in situ determination of the phase formation sequence in undercooled Ti-Fe-Si-O melts was performed using the combination of electromagnetic levitation and energy-dispersive X-ray diffraction of synchrotron radiation. Ti-Fe-Si-O alloys are known to form a large variety of stable and metastable phases, including quasicrystals and approximant phases. Different solidification pathways are found as a function of undercooling, with the primary nucleation of the 1/1 crystal approximant phase from the liquid occurring at the largest undercoolings. The results on phase selection are discussed with respect to the influence of the short-range order in the undercooled liquid on the nucleation behavior of solid phases.

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Author

O. Heinen; D. Holland-Moritz; D.M. Herlach; K.F. Kelton

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-0248)

Published

2006

Language

EN

Field

Engineering (Physical Sciences)