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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Temperature and composition profile during double-track laser cladding of H13 tool steel
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Temperature and composition profile during double-track laser cladding of H13 tool steel

机译：H13工具钢双道激光熔覆过程中的温度和成分分布

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Multi-track laser cladding is now applied commercially in a range of industries such as automotive, mining and aerospace due to its diversified potential for material processing. The knowledge of temperature, velocity and composition distribution history is essential for a better understanding of the process and subsequent microstructure evolution and properties. Numerical simulation not only helps to understand the complex physical phenomena and underlying principles involved in this process, but it can also be used in the process prediction and system control. The double-track coaxial laser cladding with H13 tool steel powder injection is simulated using a comprehensive three-dimensional model, based on the mass, momentum, energy conservation and solute transport equation. Some important physical phenomena, such as heat transfer, phase changes, mass addition and fluid flow, are taken into account in the calculation. The physical properties for a mixture of solid and liquid phase are defined by treating it as a continuum media. The velocity of the laser beam during the transition between two tracks is considered. The evolution of temperature and composition of different monitoring locations is simulated.
机译：由于多道激光熔覆材料加工的多样化潜力，目前已广泛应用于汽车，采矿和航空航天等行业。温度，速度和成分分布历史的知识对于更好地理解该过程以及随后的微结构演变和特性至关重要。数值模拟不仅有助于理解此过程涉及的复杂物理现象和基本原理，而且还可以用于过程预测和系统控制中。基于质量，动量，能量守恒和溶质运移方程，采用综合三维模型对H13工具钢粉末注射双道同轴激光熔覆进行了模拟。计算中考虑了一些重要的物理现象，例如传热，相变，质量增加和流体流动。固相和液相混合物的物理性质通过将其视为连续介质来定义。考虑了两个轨道之间过渡期间的激光束速度。模拟了不同监测地点的温度和组成的演变。

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