TC4钛合金激光熔覆高熵合金的温度场数值模拟.pdfVIP

《热加工工艺》2023年4月第52卷第8期

TC4钛合金激光熔的温度场数值模拟

王世清，史冰园，金峰2

(1.西安石油大学材料科学与工程学院，陕西西安710065;2.西北工业大学材料科学与工程学院，陕西西安

710072)

摘要：采用软件模拟在TC4基体上激光熔覆AICo.CrFeNiTiB高熵合金粉末温度场分布情况，得到了恒定熔覆

速率不同熔覆功率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，计算出模拟所得熔池宏观形貌

几何尺寸，并完成了实验验证。结果表明：其他条件不变时，激光熔覆功率由1000W增至1300W时，熔覆最高温度从

1892.6℃增至2278.1℃，实验熔池宽度由3.36mm增加到3.84mm，增加了14.28%；基材熔化深度由0.65mm增加到

1.01mm，增加了55.38%。在功率P=1300W、进给速度V=5mm/s时，得到了最佳熔池形状。

关键词：激光熔覆；温度场；高熵合金；数值模拟

D0I:10.14158/j.cnki.1001-3814

中图分类号：TG174.4文献标识码：A文章编号：1001-3814(2023)08-0121-04

NumericalSimulationonTemperatureFieldofHigh-entropyAlloy

byLaserCladdingonTC4TitaniumAlloy

WANGShiqing,SHIBingyuan,JINFeng?

(1.CollegeofMaterialScienceandEngineering,XianShiyouUniversity,Xian710065,China;2.SchoolofMaterials

ScienceandEngineering,NorthwesternPolytechnicalUniversity,Xian710072,China)

Abstract:ThesoftwarewasusedtosimulatethetemperaturefieldoflasercladdingAICo,CrFeNi,TiBhigh-entropyalloy

powderonTC4substrate,andthetemperaturedistributionclouddiagram,temperaturethermalcyclecurveandtemperature

changeratecurveofthesamenodeunderconstantcladdingrateanddifferentcladdingpowerswereobtained.Thegeometrical

dimensionsofthemacroscopicmorphologyofthemoltenpoolobtainedbythesimulationwerecalculated,andthe

experimentalverificationcompleted.Theresultsshowthatwhenotherconditionsremainunchange,whenthelasercladding

powerincreasesfrom1000Wto1300W,themaximumcladdingtemperatureincreasesfrom1892.6Cto2278.1C,andthe

experimentalmoltenpoolwidthincreasesfrom3.36mmto3.84mm,withanincreaseof14.28%.Themeltingdepthofthe