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Updated: May 31, 2026
06:55
Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
Published on: August 5, 2016
Pattern formation during diffusional transformations in the presence of triple junctions and elastic effects.
E A Brener1, G Boussinot, C Hüter
1Institut für Festkörperphysik Forschungszentrum Jülich, Jülich, Germany.
Summary
Alloy dendritic melting scenarios reveal faster propagation speeds due to grain boundaries or strains. Partial melting, with coupled melting and solidifying fronts, is most efficient, driven by diffusion in thin liquid layers.
Area of Science:
- Materials Science
- Solidification Science
Background:
- Conventional dendritic growth is well-understood.
- Melting processes in alloys present unique challenges and phenomena.
Purpose of the Study:
- To compare different scenarios for dendritic melting in alloys.
- To investigate the factors influencing front propagation velocity during melting.
Main Methods:
- Analysis of front propagation velocity in various melting scenarios.
- Phase field simulations for melting in peritectic and eutectic systems.
- Green's function methods and phase field approach for elastic effects.
Main Results:
- Higher propagation speeds observed with grain boundaries or coherence strains.
- Partial melting with coupled fronts is the most favorable scenario, governed by diffusion.
- Triple junction rotation observed in simulations.
- Elastic effects significantly alter selection principles, enabling free dendritic growth.
Conclusions:
- Dendritic melting dynamics are complex and influenced by factors beyond conventional growth.
- Partial melting and elastic effects are key to understanding rapid and unique solidification patterns.
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