TC11表面激光熔覆MCrAlY涂层温度场模拟及参数优化  

Temperature field simulation and parameters optimization of MCrAlY coating on TC11 surface by laser cladding

作　　者：沈清[1] 王宏宇[1] 金镜[1] 吴志奎[1] 程满[1] 

机构地区：[1]江苏大学机械工程学院,江苏镇江212013

出　　处：《兵器材料科学与工程》2014年第1期73-77,共5页Ordnance Material Science and Engineering

基　　金：中国博士后科学基金项目(2011M501172);江苏省自然科学基金项目(BK2011479);江苏省博士后科学基金项目(1102114C);江苏省精密与微细制造重点实验室开放基金项目(KFA11250-04);江苏省光子制造科学与技术重点实验室开放基金(GZ201203)

摘　　要：采用ADPL参数化语言,综合考虑热源模型、材料热物性参数、相变潜热、边界条件等因素,建立了连续移动高斯热源作用下TC11表面激光熔覆MCrAlY涂层三维瞬态温度场数值模型。实验结果测量值与模拟计算值的对比表明,建立的温度场数值模型具有很好的可靠性。同时,在分析涂层品质的基础上,基于该模型对TC11表面激光熔覆MCrAlY涂层的激光工艺参数进行了预报及优化,得出较优的激光工艺参数为:激光功率1 200 W、光斑直径2 mm、扫描速度400mm/min。A numerical model established for analysis of three-dimensional transient temperature field of MCrA1Y coating by laser cladding on TCll surface under moving gauss distributing heat source was built with APDL parametric design language in consideration of heat source model, thermal-physical properties of materials, latent heat, boundary conditions. It indicates that the established numerical model of temperature field has good reliability by comparing the measured values of experimental results and numerical simulation values. The prediction and optimization of laser processing parameters of MCrA1Y coating by laser cladding on TC11 surface were obtained based on the analysis of coating quality. The optimal laser process parameters were obtained ： the laser powder 1 200 W, the spot diameter 2 mm, the scanning speed 400 mm/min.

关 键 词：TC11合金 激光熔覆 MCRALY涂层 温度场模拟 工艺参数优化 

分 类 号：TB34[一般工业技术—材料科学与工程] TG115.25[金属学及工艺—物理冶金]