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Dendritic competitionDendritic growth competition in solidifying metal alloys is a key component in the formation of the microstructure of metal parts that dictates their material properties. Many 2D studies of dendritic competition have been performed, but these represent a largely idealised representation of the behaviour observed in experiments, overlooking the complexities of the full range of 3D orientations3D orientations and the impact these geometric changes have on the interactionInteraction of grains at a dendritic level. To explore this effect in more detail a parametric numerical modelling study using a Cellular Automata dendritic solidificationSolidification code has been performed to examine the competition of bi-crystalBi crystals systems at an industrially relevant scale. For this solidifying system, this study will vary the 3D orientations3D orientations of the competing bi-crystalsBi crystals, test different thermal conditions, and assess the impact of fluid flowFluid flow. Where possible reference to observed experimental results will be presented to support the results obtained using the modelling.

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Three-Dimensional Effects in the Dendritic Growth Competition of Bi-crystals

  • 会议论文

  • 发表日期：

    2025年

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  • P. Soar,
  • I. Krastins,
  • P. Brown,
  • O. Draper,
  • N. Green,
  • A. Kao

摘要

Dendritic competitionDendritic growth competition in solidifying metal alloys is a key component in the formation of the microstructure of metal parts that dictates their material properties. Many 2D studies of dendritic competition have been performed, but these represent a largely idealised representation of the behaviour observed in experiments, overlooking the complexities of the full range of 3D orientations3D orientations and the impact these geometric changes have on the interactionInteraction of grains at a dendritic level. To explore this effect in more detail a parametric numerical modelling study using a Cellular Automata dendritic solidificationSolidification code has been performed to examine the competition of bi-crystalBi crystals systems at an industrially relevant scale. For this solidifying system, this study will vary the 3D orientations3D orientations of the competing bi-crystalsBi crystals, test different thermal conditions, and assess the impact of fluid flowFluid flow. Where possible reference to observed experimental results will be presented to support the results obtained using the modelling.