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<p>High-purity aluminum is widely used in the electronics industry, optics, aerospace, and packaging fields because of its excellent properties. To obtain high-purity aluminum ingots, the segregation method offers advantages such as low energy consumption and environmental friendliness. This study focuses on high-purity aluminum and investigates the segregation phenomenon induced by impurity partitioning during its solidification process. A combination of numerical simulation and experimental tests is employed to analyze the effect of impurity segregation on the properties of high-purity aluminum. Utilizing the high-purity aluminum solidification model established in this work, the influence of various process parameters on impurity segregation is examined. From the perspectives of optimizing the production process and enhancing purification efficiency, the optimal process parameters for the solidification process are determined. For the experimental equipment and raw materials employed in this research, when the process parameters are initial melt temperature of 1000°C, pulling speed of 0.001&#xa0;m/s, and stirring speed of 4&#xa0;rad/s, high-purity aluminum materials with uniform composition distribution, high purification efficiency, and regular grain structure can be obtained, thereby enabling the fabrication of high-performance high-purity aluminum ingots.</p>

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Investigation of Impurity Segregation Behavior During the High-Purity Aluminum Solidification Process

  • 期刊论文

  • 发表日期：

    2026年3月11日

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  • Shutao Wen,
  • Xiaofeng Hu,
  • Junzhi Hu,
  • Jinyang Cui,
  • Xin Xu,
  • Xiaojian Wang

摘要

High-purity aluminum is widely used in the electronics industry, optics, aerospace, and packaging fields because of its excellent properties. To obtain high-purity aluminum ingots, the segregation method offers advantages such as low energy consumption and environmental friendliness. This study focuses on high-purity aluminum and investigates the segregation phenomenon induced by impurity partitioning during its solidification process. A combination of numerical simulation and experimental tests is employed to analyze the effect of impurity segregation on the properties of high-purity aluminum. Utilizing the high-purity aluminum solidification model established in this work, the influence of various process parameters on impurity segregation is examined. From the perspectives of optimizing the production process and enhancing purification efficiency, the optimal process parameters for the solidification process are determined. For the experimental equipment and raw materials employed in this research, when the process parameters are initial melt temperature of 1000°C, pulling speed of 0.001 m/s, and stirring speed of 4 rad/s, high-purity aluminum materials with uniform composition distribution, high purification efficiency, and regular grain structure can be obtained, thereby enabling the fabrication of high-performance high-purity aluminum ingots.