粉末冶金高温合金中的原始颗粒边界_PPB_问题

20420108POWDERMETALLURGYINDUSTRYVol.20No.4Aug.2010:2009-08-03:,No.2010CB631200(:2010CB631204):(1984-),(),,,(PPB)1,2,1,2,2(1.,710055;2.,100081):概述了热等静压态粉末冶金高温合金中原始颗粒边界(PPB)的形成机理及其对合金组织与性能的影响,以及影响PPB形成的因素和消除PPB的措施指出PPB的存在不利于合金组织的控制,而且使合金的塑性降低,性能不稳定通过调整合金成分选择合适的粉末制备和处理工艺以及改进成形工艺等措施可以消除PPB高温固溶处理可以溶解PPB析出物,但冷却速度不合适时PPB会再次析出:粉末冶金高温合金;原始颗粒边界;热等静压;碳氧化物:TF125.4:A:1006-6543(2010)04-0043-07THEPROBLEMOFPRIORPARTICLEBOUNDARYPRECIPITATIONINP/MSUPERALLOYSZHAOJun-pu1,TAOYu2,YUANShou-qian1,JIAJian2,HANShou-bo2(1.SchoolofMetallurgicalEngineering,Xi.anUniversityofArchitecture&Technology,Xi.an710055,China;2.HighTemperatureMaterialsResearch,CISRI,Beijing100081,China)Abstract:Themechanismofpriorparticleboundary(PPB)precipitationanditseffectsonm-icrostructuresandmechanicalpropertiesinhotisostaticallypressed(HIP)P/Msuperalloysarereviewedinthispaper.Meanwhile,thefactorscontributingtoPPBformationandthemeas-uresonminimizingPPBprecipitationhavebeenanalyzed.Itispointedoutthattheductilitywouldbelowerandthemechanicalpropertiesarescatteredduetothepresenceofoxycar-bidesalongPPBs.PPBcanbeavoidedorreducedthroughmeasureslikemodifyingthechem-istryofthealloys,ophimizingtheprocessesofpowderproductionandpowdertreatmentsaswellasHIPparameters.Carbidescanbedissolvedbyhightemperaturesolutiontreatments,buttheycanreprecipitateatthePPBsifthealloyslowlycoolsthroughtheMCcarbidepre-cipitationrange.Keywords:P/Msuperalloy;priorparticleboundary;hotisostaticpressing;oxycarbide,,2070,FGH95FGH96FGH97,,[(PPB)]PPB,,PPB1PPB111PPB,[1](HIP),,,,[2],HIP,,PPB(1)1HIPFGH96PPB,PPB,TiCrAlO2C,HIP,TiNbC,/,TiNb[2,3]:(Al,Cr)+Ti(Nb)+Ni+Cy(Ti,Nb)(C,O)+Ni3Al+Cr,,HIPPPB,PPB[1,4],PPBCc[5]HIP,Cc,,PPB,PPB,,PPB,Ingesten20~4,PPB[3]2IngestenPPB112PPB,PPBCc,PPB[3],#44#20(AA),,,(PREP),PPB,CcFGH95,PPB,40@10-4%,PPBCc;70@10-4%,PPBMC[5]2PPB,,,211Al2O3TiO2MCHIP,,,,(3[6]),,PPB,3HIPFGH95PPB212PPB,,,PPB/,,,,[5,7],PPB,PPB(4[8])5PPB,[9]PPB[10],,4EP741NPPPB5PPBCcPPB,,[5]Cc3PPB311PPB#45#4:(PPB)(1)PPBPPBMC,PPBAPK-10103%,PPB,50@10-4%,PPB[11](2)HfTa,HIP,[11,12],WarrenAs-troloyHfPPB,PPB,Hf,[13],PPB(3)B2O3,,B2O3,,PPB,[13]011%,0102%,PPB[11]312PPBPPB,PREPHIPTiCAA,PREPTiC,[14]PPB,,CO,HIPPPB[10],HIPPPB,,TiC,HIPPPB[11],AAPREP,,[15],TiC313PPBHIPTiNbCPPB,PPBHIPPPB,,COAstroloyHIP,35MPa105MPa,PPB12[3],HIP,PPB314PPB,PPB,CcPPB,,,,PPB,,/+0PPB,(),PPB[16]MCPPB,PPB,,4PPB411,PPB,PPBMERL76IN100,NbHf,PPB;AP1AstroloyPPB412(1),,#46#20PPB6PPB[9]6PPB:(a);(b)(2)[11][14]HCl,,TiC,:4HCl(g)+TiCyTiCl4(g)+CH4(g),,HIP,,;25Lm,,,(3)(PHT)M23C6(MC),,MCHIP,HIP,,,,,,,,HIP,[2],,,,,HIP,[17]413(1)HIPM23C6,;MC,,,HIP,,PPB[19],HIP,,HIP,,[20](2)HIPHIPPPB,HIPPPBFGH95,HIP1120ePPB;1080e,[21],HIP,,TiNbC,PPB;[7],HIPPPB,HIPPPB[21],,,,(3)SS-HIP[22,23]SS-HIP()HIP,Tsolidus-TSS-HIP28e,PPB,,PPB,HIP,#47#4:(PPB),,7HIPSS-HIPUdimet720[22]7SS-HIPUdimet720PPB(a)1120eHIP;(b)1265eHIP414PPB(1)(SS-ST)PPB[11,16],,,(2)PPB,PPB,+,PPB,HIP,,[4],PPB,5(1)PPBHIPCTiNb,,MC,,,(2)CBHfTa,,PPB(3)HIP,PPB(4)PPB,MC,[1]CHENHuanming,HUBenfu,LIHuiying,Surfacecharacteristicsofrapidlysolidifiednicke-lbasedsuper-alloypowderspreparedbyPREP[J].RAREMET-ALS,2003,22(4):309-314.[2],,.HIPRen†95[J].,1989,7(4):213-219.[3]IngestenNG,WarrenR,WinbergL.NatureandoriginofpreviousparticleboundaryprecipitatesinP/Msu-peralloys[A].BrunetaudR,CoutsouradisD,GibbonsTB,LindblomY,MeadowcroftDB,SticklerR.HighTemperatureAlloysforGasTurbines1982[C].DRe-idelpublishingCompany,1982:1013-1027.[4]RaoGAppa,SrinivasM,SarmaDS.EffectofoxygencontentofpowderonmicrostructureandmechanicalpropertiesofhotisotaticallypressedsuperalloyInconel718[J].MaterialsScienceandEngineeringA,2006,435-436:84-99.[5],,,.FGH95#48#20[J].,2006,16(3):1-5.[6]GUOWe-imin,WUJian-tao,ZHANGFeng-ge,ZHAOMing-han.Microstructure,PropertiesandHeatTreat-mentProcessofPowderMetallurgySuperalloyFGH95[J].JournalofIronandSteelResearch,International,2006,13(5):65-68.[7]RaoGAppa,KumarMahendra,SrinivasM,SarmaDS.Effectofstandardheattreatmentonthemicrostruc-tureandpropertiesofhotisostaticallypressedsupera-lloyInconel718[J].MaterialsScienceandEngineeringA,2003,355:114-125.[8]RadavichJohn,furrerDavid.AssessmentofRussianP/MsuperalloyEP741NP[A].GreenKA,PollockTM,HaradaH,HowsonTE,ReedRC,SchirraJJ,Wa-lstonS.Superalloys2004[C].TMS,2004:381-390.[9],.[J].,2006,26(3):244-250.[10],,,,.P/M[J].,2002,25(6):34-36,40.[11]PrakashTL,TewariSN,RamakrishnanP.Priorpart-icleboundary(PPB)precipitatesandthefractographicfeaturesofhotisostaticallypressed(HIP)NimonicAP-1P/MSuperalloy[A].RamakrishnanP.PowderMet-allurgyandRelatedHighTemperatureMaterials[C].TransTechPublications,1985:402-420.[12]WarrenR,IngestenNG,WinbergL,RonnhultT.Par-ticlesurfacesandpriorparticleboundariesinhafniummodifiedPMastroloy[J].PowderMetall,1984,27(3):141-146.[13]SharmaKK,BalasubramanianTV,MisraRDK.EffectofborononparticlesurfacesandpriorparticleboundariesinaPMnicke-lbasedsuperalloy[J].ScriptaMetallurgica,1989,23(4):573-577.[14]ThamburajR,KoulAK,WallaceW,MalherbeMCde.PriorparticleboundaryprecipitationinP/Msuper-alloys[A].Edward,CharlesNAqua,WhitmanI.Mod-erndevelopmentsinpowdermetallurgy[C].MetalPowderIndustriesFederationAmerican