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Updated: Oct 8, 2025
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Published on: February 4, 2021
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Rapid eutectic growth: from rod growth to diffusionless solidification
Peter K Galenko1,2, Junfeng Xu1,3
1Otto Schott Institute of Materials Research, Friedrich-Schiller-Universität Jena, 07743, Germany.
Summary
Rapid solidification of eutectic systems forms metastable phases due to diffusionless growth. This study models atomic diffusion in rod eutectics, simplifying calculations for crystal growth velocity.
Area of Science:
- Materials Science
- Physical Chemistry
- Solidification Science
Background:
- Rapid solidification of eutectic systems often results in metastable solid phases.
- This phenomenon is attributed to diffusionless (chemically partitionless) solidification at high crystal growth velocities, suppressing normal eutectic decomposition.
Purpose of the Study:
- To develop a model for diffusionless growth analyzing atomic diffusion in rod eutectic systems.
- To derive a simplified calculation method for Bessel function-related equations in rod eutectic growth.
Main Methods:
- Development of a mathematical model for diffusionless growth.
- Analysis of atomic diffusion within rod eutectic couples.
- Derivation of a simplified calculation method for Bessel function equations.
Main Results:
- A model for diffusionless growth and atomic diffusion in rod eutectics was established.
- A simplified calculation method for Bessel function equations in eutectic growth was obtained.
- The method is applicable to various rod eutectic growth models.
Conclusions:
- Diffusionless growth is key to metastable phase formation in rapidly solidified eutectics.
- The developed model and simplified calculation method enhance the understanding and prediction of eutectic solidification.
- This work contributes to the study of transport phenomena in complex systems.
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