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首页> 外文期刊>Thermophysics and Aeromechanics >Modelling of multi-vortex convection of fine alloying components in the molten pool under the laser radiation
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Modelling of multi-vortex convection of fine alloying components in the molten pool under the laser radiation

机译:激光辐射下熔池中细合金成分的多旋流对流建模

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摘要

The work is devoted to the mathematical modelling and numerical solution of the problems of conjugate micro-convection, which arises under the laser radiation action in the metal melt with surface-active refractory disperse components added for the modification, hardening, and doping of the treated surface. A multi-vortex structure of the melt flow has been obtained, the number of vortices in which depends on the surface tension variation, on the temperature and power of laser radiation. Special attention is paid to the numerical modelling of the behavior in the melt of the substrate of disperse admixture consisting of the tungsten carbide particles. The role of microconvection in the distribution of powder particles in the surface layer of the substrate after its cooling is shown.
机译:该工作致力于共轭微对流问题的数学建模和数值求解,该共轭微对流问题是在金属熔体中的激光辐射作用下产生的,表面活性的耐火分散组分的加入是为了改性,硬化和掺杂处理过的表面。已经获得了熔体流的多涡旋结构,其中涡旋的数量取决于表面张力的变化,取决于激光辐射的温度和功率。特别注意由碳化钨颗粒组成的分散混合物在基材熔体中的行为的数值模拟。示出了微对流在冷却之后在基底的表面层中粉末颗粒的分布中的作用。

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