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Numerical Study on Laser Cladding Process of Magnesium Alloys

机译：镁合金激光熔覆过程的数值研究

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摘要

In this paper, a three-dimensional simulation model for laser-cladding processes of magnesium alloys is proposed. The applied loading is a moving heat source that depends on process parameters such as power density, laser beam diameter and scanning speed. The effects of process parameters on the melt pool are quantitatively discussed by numerical analysis. In these parameters, Marangoni force is the most important in affecting the molten metal flow and the contour of the melt pool. Both the length and depth of the melt pool vary sharply with temperature dependence of surface tension dσ/dT when the absolute value of this temperature dependence is at lower value.
机译：本文提出了镁合金激光熔覆过程的三维仿真模型。施加的载荷是一个移动的热源，它取决于过程参数，例如功率密度，激光束直径和扫描速度。通过数值分析定量讨论了工艺参数对熔池的影响。在这些参数中，Marangoni力对于影响熔融金属的流量和熔池的轮廓最为重要。当该温度依赖性的绝对值较低时，熔池的长度和深度均随表面张力的温度依赖性dσ/ dT急剧变化。

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  • 来源
  • 会议地点 Sanya(CN)
  • 作者

    Qingming Chang; Changjun Chen; Xia Chen; Siqian Bao;

  • 作者单位

    Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education College of Materials and Metallurgy,Wuhan University of Science and Technology,Wuhan,China;

    Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education College of Materials and Metallurgy,Wuhan University of Science and Technology,Wuhan,China;

    Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education College of Materials and Metallurgy,Wuhan University of Science and Technology,Wuhan,China;

    Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education College of Materials and Metallurgy,Wuhan University of Science and Technology,Wuhan,China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
  • 关键词

    Laser cladding process; Marangoni force; Surface tension; Melt pool;

    机译：激光熔覆工艺；马氏力；表面张力；熔池;

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