Role of interfacial energy and liquid diffusivities on pattern formation during thin-film three-phase eutectic growth

نویسندگان

چکیده

In this paper, we investigate three-phase eutectic growth during thin-film directional solidification of a model symmetric ternary alloy. contrast to two-phase eutectics that have only single possibility, ${\alpha}{\beta}{\alpha}{\beta}$..., as the pattern, infinite possibilities exist. Here, explore possible existence pattern selection influenced by change in solid-solid interfacial energies and diffusivities. We begin study estimating undercooling vs. spacing variation for simplest configurations lengths 3 4, where phase-field simulations are utilized quantify influence energy component Subsequently, extended consisting multiple periods ${\alpha}{\beta}{\delta}$... well ${\alpha}{\beta}{\delta}{\beta}$... carried out assessing stability long-wavelength perturbations spacing. Thereafter, competition among patterns is investigated through coupled type [${\alpha}{\beta}{\delta}]_m[{\alpha}{\beta}{\delta}{\beta}]_n$, (m,n) being respective number periods. Finally, studied initializing with random initial classifying emerging based on phase sequences. The principal finding that, while there no strong selection, between diffusivities, find latter strongly morphology.

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ژورنال

عنوان ژورنال: Journal of Materials Science

سال: 2021

ISSN: ['1573-4803', '0022-2461']

DOI: https://doi.org/10.1007/s10853-021-06434-8