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6629520079SHANGHAIMETALSVol.29No.5September,2007IF12(1.,110004;2.)[]IF,IF,IF,IF[]IFPROGRESSINRESEARCHOFHIGHSTRENGTHIFSTEELFORAUTOMOTIVEAPPLICATIONSLiShouhua1LiJun2(1.SchoolofMaterialsandMetallurgy,NortheasternUniversity,Shenang110004,China;2.BaosteelColdRollingMill)[Abstract]HighstrengthIFsteelisextensinvelyusedforautomotiveindustrywithhightensilestrengthandgooddeepdrawingproperties.ThestrengtheningmechanismandthecontrolofsecondaryworkingembrittlementofhighstrengthIFsteelareintroducedbriefly.ThispaperemphaticallydescribestheprogressinresearchofhighstrengthIFsteelforautomotiveapplications,whichpresentstheframeofreferenceinresearchofnewhighstrengthIFsteel.[KeyWords]HighStrengthIFSteel,StrengtheningMechanism,SecondaryWorkingEmbrittlement,DevelopmentandResearch12090,,,,(1),1IFIFIF,PMnSi,CN,,,,,[1]:,1.01.2mm,0.70.8mm,15%20%,8%15%IF2IF[2]:;;();;,22IFMnPSi,rNb-TiIF,IF,,,IFrn,,IF,IF[3]3IFIF,IFIFPIFCNTiNb,,[2][4]:10IF,,,,Nb2IFTi2IF[5]:(0.002%)IF,,IF[6][7]:IF765:IF,,,4IFIFIFCN(4010-6),IFCN(2010-6),CQSEDDQ[8]IFIFMnPSi,r2.0,400MPa,TiNbBIF3IFIF400450MPa[9]4.1IF[10]IF,[11],Si,NKK[12]IF2SFGHITEN,IF3,IF,IF,W(C)=6010-6,Nb(C,N),,Nb(C,N),,,{111},Si,4.2IFrr[2]IF,r,[13],C2WC2W,4,{111}{111}rr2.40,r3.25(0.85),4C2WrIF,r,IFr[14]IF,(4),{111},r2.85IF[14]:,,r,r86294.3IF(1)IF[15]:IF,TiSTi(C,N),TiFeP;,TiSTi(C,N),TiFeP,{111}[16]IFFeTiP:,,FeTiPTiN11FeTiP,IF,TiN1:1,:Ti%3.34N%,Nb%7.75C%(2)IF[17]IFIF,TiSTi(N,C),,;IF,,TiFeP,,IFPTiFeP[18]{111},TiFeP,{111},{100},,IFrIFr4.4IF(1)IFIF,IF,,IF,IF(),[19,20],,IF,IF(powde2ring),,[21]MataigneJean2Michel[22],IF,,[23]:,11,10%,,,(2)IF,390MPaIF[24]:,IF(CRM)(IL2ZRO)TiNb2IFIF,ReL=200400MPa,Rm=500MPa,A=20%,Lankford2,0.2(),440MPaIFSFG44O2GA,GAr1.7,440MPaIF,,IF,5,:965:IF,,,,,IF,:(1)IF,;(2),IF;(3)IF,,IF,IF,IFrn,IF,IF[1].IF[J].,1997,(1):58h61.[2].[M].:,1999,32h33,83,119h120.[3].[J].,2000,35(11):66h70.[4]JamesFeketeR,etal.Advancedsheetsteelsforautomotiveapplication[J].JOM,1992:17.[5]YasuharaE,etal.ISIJInterantional[J].1994,34:99.[6]HeidtmannU,etal.InternationalsymposiumforLCandULCsheetsteels[C].Aachen,Germany,Vol.1,1998:39h50.[7]ZhengLei,etal.Int.forumforphysicalmetallurgyofIFsteels[C].Tokyo,Japan,1994:161.[8],,.[J].,2003,24(1):55h56.[9],,.[J].,2002,(2):14h16.[10],,.[J].,2006,16(9):1h9,12.[11]HiroshiTAKECHI,OsamuAKISUE.Metallurgicalcon2siderationonhighstrengthsteelsheetsforautomobilesinNipponSteelCorportion[C]//Proc.ofConf.onHSLASteels’85,Beijing:ChineseSocietyofMetals,1985.[12]FusatoKITANO,etal.NewtypeofIF2highstrengthsteelwithsuperiorsecondaryworkembrittlement[J].ISIJInter2national,2001,41(11):1042h1410.[13]CuiDL,WangXJ.Obtainingverystrong{111}recrystal2lizationtextureinIFsteel[C]//Int.ForumforPhysicalMetallurgyofIFSteels.ISIJ.Tokyo:ISIJ.May10h11,1994.67h70.[14],,,.rIF[J].,2001,36(6):37h39,66.[15],.IF[J].,1995,30(2):63268.[16],,,.IF[J].,2000,35(9):47h51.[17].IF[D].:,1994.[18]ZhaoZS,MaoWM,YuYN,etal.EffectofTionprecip2itationofsecondphaseparticlesandmechanicalpropertiesofhighstrengthIFsteel[J].KangT’ieh/IronSteel,2000;35:47h51.[19]KitanoF,UrabeT,FujitaT,etal.NewtypeofIFstrengthsteelwithsuperioranti2secondaryworkembrittle2ment[J].ISIJInternational,2001,41(11):1402h1410.[20]HanmyoM.ProductionandtechnologyofironandsteelinJapanduring2000[J].ISIJInternational,2001,41(7):655h669.[21],,.IF[J].,2005,26(3):232h235.[22]MataigneJean2Michel,DrilletPascal,etal.Optimizedgal2vannealedcoatingmicrostructureforautomotiveapplication[M].HartmannJE,ed.Theuseandmanufactureofzincandzincalloycoatedsheetsteelproductsintothe21stcen2tury.Chicago:TheIronandSteelSociety,1995.589h597.[23],,.[M].:,2007,557.[24],,.[J].,2006,16(12):5h8.0729