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Joining mechanism and modeling of vacuum-free semi-solid stirring joining

机译:无真空半固态搅拌连接的连接机理与建模

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摘要

A new process of vacuum-free semi-solid stirring joining on SiCp/A356 composites was investigated. The experimental setup and mathematical model of fixed-point stirring experiment were developed to study the influence of stirrer rotating upon the distribution of flow field and mechanical effect during semi-solid stirring joining. Numerical simulation and experimental results showed that the stirrer rotates to drive semi-solid filler alloy convection, so that a greater alternating pressure and wall shear stress were generated at the brazing interface, which increased the extrusion effect and broken effect to the surface oxide film on the brazing side, and further, removed the oxide film and increased the bonding rate of the brazing interface.
机译:研究了SiCp / A356复合材料无真空半固态搅拌连接的新工艺。建立了定点搅拌实验的实验装置和数学模型,以研究搅拌器旋转对半固态搅拌连接过程中流场分布和力学效应的影响。数值模拟和实验结果表明,搅拌器旋转以驱动半固态填充合金对流,从而在钎焊界面处产生更大的交变压力和壁切应力,从而增加了挤压作用和对表面氧化膜的破坏作用。钎焊面,进一步去除氧化膜,提高钎焊界面的结合率。

著录项

  • 来源
    《Applied Mathematical Modelling》 |2015年第6期|1665-1673|共9页
  • 作者单位

    School of Material Science and Engineering, Chongqing University of Technology, Chongqing 400054, People's Republic of China,Chongqing Municipal Engineering Research Center of Institutions of Higher Education for Special Welding Materials and Technology, Chongqing 400054, People's Republic of China;

    School of Material Science and Engineering, Chongqing University of Technology, Chongqing 400054, People's Republic of China,Chongqing Municipal Engineering Research Center of Institutions of Higher Education for Special Welding Materials and Technology, Chongqing 400054, People's Republic of China;

    School of Material Science and Engineering, Chongqing University of Technology, Chongqing 400054, People's Republic of China;

    School of Material Science and Engineering, Chongqing University of Technology, Chongqing 400054, People's Republic of China;

    School of Material Science and Engineering, Chongqing University of Technology, Chongqing 400054, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Semi-solid; Brazing; Stirring; Composites; Numerical simulation;

    机译:半固体;钎焊;搅拌;复合材料;数值模拟;

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