TC4钛合金激光熔覆CoNiCrAlY温度场数值模拟  

Numerical Simulation on Temperature Field of Laser Cladding CoNiCrAlY on TC4 Titanium Alloy

作　　者：王世清[1] 赵启喆 邢博 金峰 WANG Shiqing;ZHAO Qizhe;XING Bo;JIN Feng(College of Material Science and Engineering,Xi'an Shiyou University,Xian 710065,China;School of Materials Science and Engineering,Northwestern Polytechnical University,Xi'an 710072,China)

机构地区：[1]西安石油大学材料科学与工程学院,陕西西安710065 [2]西北工业大学材料学院,陕西西安710072

出　　处：《热加工工艺》2023年第2期79-82,共4页Hot Working Technology

基　　金：国家自然科学基金资助项目(51975469);新型钎焊材料与技术国家重点实验室开放课题项目(SKLABFMT-2019-04);西安石油大学研究生创新与实践能力培养项目(YCS19113066)。

摘　　要：用软件模拟在TC4基体激光熔覆CoNiCrAlY合金粉末温度场分布情况,得到了不同功率及不同扫描速度下的温度分布云图和同一节点温度热循环曲线、温度变化速率曲线,并计算出模拟所得熔池宏观形貌几何尺寸。结果表明:激光行进方向前方的温度梯度更密集,温度的变化速度更快,理论上在功率P=1000 W、进给速度v=5 mm/s、光斑直径d=φ3 mm时模拟过程可获得良好的冶金结合。The temperature field distribution of CoNiCrAlY alloy powder coated on TC4 matrix by laser cladding was simulated by software. The temperature distribution nephogram, thermal cycle curve and temperature change rate curve in the same node were obtained under different power and scanning speed, and the macroscopic morphology and geometry size of the simulated molten pool were calculated. The results show that the temperature gradient in front of the laser travel direction becomes denser and the temperature changes faster. Theoretically, the excellent metallurgical bonding can be obtained when power of P=1000 W, feeding rate of v=5 mm/s and spot diameter of d=φ3 mm.

关 键 词：激光熔覆 数值模拟 温度场 钛合金 

分 类 号：TG174.4[金属学及工艺—金属表面处理]