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14120022JOURNALOFIRONANDSTEELRESEARCHVol.14,No.1Feb.2002:(19762),,;:2001205223;:20012072101,1,2,2(1.,100084;2.,100081):,C,,;A+C,,;A,,:;;:TG337.3:A:100120963(2002)0120034204EffectofFinishingTemperatureinHot-RollingonPrecipitatesinNon-OrientedElectricalSteelLUFeng1,LIYou2guo1,GUIFu2sheng2,ZHAOYu2(1.TsinghuaUniversity,Beijing100084,China;2.CentralIron&SteelResearchInstitute,Beijing100081,China)Abstract:Theprecipitationundervarioushot2rollingschedulewasinvestigatedindetails.There2sultsshowedboththeamountandsizeofprecipitatesarelargeinthehotrolledbandwhichrollingisfinishedwithinCphaseregion,whiletherearelessandsmallerprecipitatesinhotrolledbandswhichrollingisfinishedwithinAphaseregion.Forthebands,whichrollingisfinishedwithinA+Cphaseregion,theprecipitatesarelargebuttheamountislower.Keywords:non2orientedelectricalsteel;hotrolling;precipitate,70%,,,[13]:,,,[4],150kg,,(,%):Si0.94,Mn0.57,Als0.03,Sn,Cu,C0.003,S0.004FormastorDigitalF:Ac1=900Ac3=950Ar1=850Ar3=890,11001h,110043©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),(50%BaCl2+30%KCl+20%NaCl,480,500650)550,4h,20min(3,12)1,AA1Table1Hot-rollingscheduleofspecimensö550öminA01A02A03A04A05A06A07A08A09A10A11A1293020406080100120140160180200220240B01B02B03B04B05B06B07B08B09B10B11B1287020406080100120140160180200220240C01C02C03C04C05C06C07C08C09C10C11C1280020406080100120140160180200220240(10%+1%+89%)HUS25GB30nm,(10%)(1%)510min,,(75Lm),JEOL2200CX,JEOLJEM22010F,WoodPeckerMcCall2Boyd[5]22.1,,,:,(Al,Si)NAlN(Al,Si)N,AlN2.2,125502.2.1CA930,[6],:1Fig.1Effectoffinishingrollingtemperatureonmeandiametersofprecipitates531:2©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[7],,,:,100min,,,A0155020min(20nm),,,(Al,Si)NBocI(Al,Si)N,(Al,Si)N100min,,,A05550100min3,,,AlNAlN,,,12,,,,AlN,:,MnSiN2[8],3A05Fig.3PrecipitatesinspecimenA05MnSiN2A06,,,AlN,,2.2.2A+CB870,1,B,60nm80nm,,,(AlSi)N,,OstwaldOstwald,Ostwald[9],,,B,,22.2.3AC800,12,,160min,,,A63200214©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1)(Al,Si)N,,:CA,AlN;A+C,AlN(2),:C,;A+C,;A,:[1].[M].:,1997.[2]BocI,CzirakiA,CsebiJ,etal.LimitofAlContentinFe2SiElectricalSteels[J].IEEETransactionsonMagnetics,1990,26(5):222622228.[3]BocI,CzirakiA,GrofT,etal.AnalysisofInclusioninCold2RolledN.O.Si2FeStrips[J].JournalofMagnetismandMagneticMaterials,1990,(83):3812383.[4]LyudkovskyG,ShapiroJM.EffectofAluminumContentandProcessinginTextureandPermeabilityofLaminationSteels[J].JournalofAppliedPhysics,1985,57(1):423524237.[5].[M]..:,1980.[6].[D].:,1999.[7].[M]..:,1984.[8]YashikiH,KanekoT.EffectsofMnandSonGrainGrowthandTextureinColdRolled0.5%SiSteel[J].ISIJInterna2tional,1990,30(4):25233.[9],,.[M].:,1989.731:2©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.