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首页> 外文会议>EPD congress;TMS annual meeting exhibition >NUMERICAL ANALYSIS OF THERMO-MECHANICAL BEHAVIOR OF LASER CLADDING PROCESS
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NUMERICAL ANALYSIS OF THERMO-MECHANICAL BEHAVIOR OF LASER CLADDING PROCESS

机译：激光熔覆过程热力学行为的数值分析

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摘要

The laser cladding is an important surface treatment for enhancing resistance against corrosion, abrasion, and wear. The focus of the present study is to develop a three dimensional finite element model to analyze the temperature history and thermal stress evolution during multi-pass laser cladding process on H13-H13 tool steel sample. A sequentially coupled thermal-stress analysis methodology was adopted in this study. The thermal model was firstly established to investigate the temperature history of the laser cladding process. Then the temperature history was used as input to mechanical model to calculate the thermal stress evolution during the process and the residual stress after the sample completely cooled down to room temperature. The influences of process parameters including the scanning speed and scanning strategies on temperature history, thermal stress evolution, and residual stress were investigated in details.
机译：激光包层是一种重要的表面处理，用于增强抗腐蚀，磨损和磨损的抗性。本研究的焦点是开发三维有限元模型，分析H13-H13工具钢样品的多通激光熔覆过程中的温度历史和热应力演化。本研究采用序贯耦合的热应力分析方法。首先建立了热模型，以研究激光熔覆过程的温度历史。然后将温度历史用作机械模型的输入，以计算过程中的热应力演变和样品完全冷却至室温后的残余应力。研究了包括扫描速度和扫描策略在温度历史，热应力演化和残余应力上的过程参数的影响是详细的。

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