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复杂结构的钛合金宽弦空心风扇叶片的双层制造工艺及其毛坯优化设计（英文）.docx

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复杂结构的钛合金宽弦空心风扇叶片的双层制造工艺及其毛坯优化设计（英文） Double-layerManufacturingProcessandBlankOptimizationDesignofComplexTitaniumAlloyWide-chordHollowFanBlades Abstract: Thedesignofcomplextitaniumalloywide-chordhollowfanbladesisvitalforenhancingtheaerodynamicperformanceofaircraftengines.Thispaperproposesadouble-layermanufacturingprocessandblankoptimizationdesignofcomplextitaniumalloyfanblades.Theprocessincludestwokeycomponents,whicharelasersinteringandhotisostaticpressing.Thehotisostaticpressingtechniqueenhancesthedensityandcompactnessofthesinteredparts,improvingthemechanicalpropertiesofthefanblades.Theblankoptimizationdesigncalculatestheoptimalparametersthatminimizethematerialwasteandreducethecostsofmanufacturing.Thedual-layermanufacturingprocessandtheoptimizationdesignofthefanbladeblankcaneffectivelyenhancethequalityofthefinalproductwhilereducingproductioncosts. Introduction: Titaniumalloyshavebeenextensivelyusedinthefabricationofaircraftenginecomponents,owingtotheirhighstrength,excellentcorrosionresistanceandlowdensity.Thefanbladeisacriticalcomponentofaturbineengine,playingavitalroleinenhancingtheengine'saerodynamicperformance.Thedesignoffanbladeshascontinuouslyevolvedtoachievemaximumefficiency,whilemaintaininghighresistancetofatigue,vibrationandhigh-temperaturecorrosion.Thelatestdesignsincludecomplexgeometries,hollowstructures,andwide-chordconfigurations. Duetotheircomplexdesignandstructure,themanufacturingofwide-chordhollowfanbladeshasalwayspresentedachallenge,primarilyregardingtheirreproducibilityandaccuracy.Traditionalmanufacturingtechniquessuchascastingandforgingarenotsuitableforproducingcomplexgeometries,whiletheCNCmachiningprocessistime-consumingandexpensive. Recentadvancesinadditivemanufacturingtechniques,suchaslasersintering,haveprovidedanexcellentopportunityforproducingcomplexgeometries,particularlyintitaniumalloys.Additivemanufacturingtechniquescansignificantlyreducematerialwasteandminimizeproductiontimebyproducingpartslayer-by-layer. However,reducingtheproductioncostso