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Investigation of morphology selection for CBr4-C2Cl6 alloy in three dimensions with multi-phase field method

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  • Multiscale Modeling & Simulation of Materials
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Abstract

With the multi-phase field model, the unidirectional solidification with constant velocity growth and variable velocity growth of the CBr4-C2Cl6 eutectic alloy is simulated in three dimensions. The simulated results with constant velocity growth show that with the increase of pulling velocity, the morphology of the CBr4-C2Cl6 alloy evolves in the sequence of lamellar merging →lamellar-rod transition→stable lamellar growth→oscillating growth→lamellar branching. A morphology selection map is established with different pulling velocities, which is confirmed to be correct by the velocity change process. It is shown that all of the morphology transitions, the average interface growth velocity and average interface undercooling show a hysteresis effect against the instant of velocity change. The relationship between the interface average undercooling and interface average growth velocity is consistent with the theoretical value.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Tongji University, Shanghai, 201804, China

    YuJuan Yang & Biao Yan

  2. Shanghai Key Lab of Development and Application for Metal Functional Materials, Tongji University, Shanghai, 201804, China

    YuJuan Yang & Biao Yan

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  1. YuJuan Yang
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  2. Biao Yan
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Correspondence to Biao Yan.

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Yang, Y., Yan, B. Investigation of morphology selection for CBr4-C2Cl6 alloy in three dimensions with multi-phase field method. Sci. China Phys. Mech. Astron. 54, 866–871 (2011). https://doi.org/10.1007/s11433-011-4326-9

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  • DOI: https://doi.org/10.1007/s11433-011-4326-9

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