奥氏体不锈钢的晶间腐蚀

:2005207201;2005210221:(1970-),,,,.Tel:[phone]E-mail:[e-mail],,643000:CCrP;CN0103%0110%.:;;:TG157:A:100226495(2006)0520357204ONINTERGRANULARCORROSIONOFAUSTENITICSTAINLESSSTEELLUOHong,GONGMinMaterialandChemicalEngineeringDepartment,SichuanUniverstyofScienceandEngineering,Zigong643000ABSTRACT:Themechanismsofintergranularcorrosion(IGC)ofausteniticstainlesssteelwereintro2duced.Theeffectsofcontentofcarbon,chromiumandnitrogenetc.aswellasofcoolwork,casting,weldingetc.onIGCwerediscussedforausteniticstainlesssteel.Inordertomitigatingthesusceptibili2tytoIGC,thecontentofcarbonandnitrogenshouldbelimitedto0.03%(maximum)and0.10%(maximum)respectively,ontheotherhand,apropersolutionheattreatingshouldalsobetaken.KEYWORDS:austeniticstainlesssteel;intergranularcorrosion;review(IGC),,,.,,[1],1012%[2].,427816,,,,.,(,),[1,419].1[1,48,1418],Cr.C0102%,C.,C,,CCr((Cr,Fe)23C6).(Cr,Fe)23C6Cr,Cr,Cr,Cr12mass%,,,-,.(),,.Cr,.(FeCr),(),,.,.,CrCr,,Cr,Cr,CrCr.,Cr,CrCr,.,AES,18520069CORROSIONSCIENCEANDPROTECTIONTECHNOLOGYVol118No15Sep12006,,.,,.,.,,.,,,.221121111[3]Creff=Cr%-0118Ni%-100C%.18-8,18-8,C%0108%,C%0103%[5,6].[7]316,:11002,;3002,;6502,,GB433415-90,20,:316L(C%=01006%)316Ti(C%=01036%),316Ti316(C%=01042%),,,.,.O1V1Kasparova[8]X20H20(01002%P,0101%Si)6501h,10h,100h,:,.E1R1HWANGS1G1KANG[9]304L306LLi2CO3-K2CO3304306.21112Cr,Cr,.18Cr-8Ni550Cr;,,[10].21113NiNiC,(Cr23C6),Ni.Ni:Creff=Cr%-0118Ni%-100C%,316LCreff1118%,,Cr11%,,[3].21114(1)Si:,.,Si23,Cr.O1V1Kasparova:65%,0107%C313%SiX20H20,SiC,Cr23C6,,,,Cr,[8].(2)N:,N0110%,.[6],Nb01002%NNbNNbC,,,CN,C,,.TiNb,,TiNbNNbNTiN,.316L1200,N,,1050,,011%0123%N,500900,N[19].(3)NbTi:,,Cr,[1,6,7],,(),TiC.(4)Mo:Mo.(5)PS:P,.,,[6,16].(6)B:,(Cr23C6),,,.(7)SnPb:,,,.212A1DISchinoJ1M1Kenney[17]AISI304(01035%C)HN(010375C,0137%N),AISI304HNH2SO4-FeSO4(Streicher),,,.,,Cr,Cr,.AISI304HN,C,.,.853183311,,,,[4],,,,.312,,,,,.,.313,,,,,,(450850),10501100[2],.,,,,.,,(),150.314,,,,,18Cr-9Ni25%,C%0104%[10]..4,GB4334-200310%,,.,,.ASTMA262;,[12],,1Cr18Ni9Ti;,[13],(EPR)(650/2h,)304304L316L321,ir/ia,304L316L3211%,,30410%,;[2]EPRH2SO4+Na2S4O6,AISI304316,:Na2S4O6EPR.,[10].,.,.511Cr.21C,C0103%,,C.31,.41EPR,.51,,.:[1].[M].:,1984,156.[2].[J].,1992,(4):242.[3]FJTorresect.Corrosionbehaviorofsensitizedduplexstain2lesssteel[J].Bio2MedicalMaterialsandEngineering,1998,(8):25.[4].[J].,1999,(3):73.[5].18-8[J].9535:,2003,31(1):51.[6].18-8[J].,2003,(2):19.[7],.316[J].,2000,(6):4.[8]OVKasparova.Peculiaritiesofintergranularcorrosionofsili2con2containingausteniticstainlesssteel[J].ProtectionofMet2als,2004,(5):425.[9]ERHwang,SGKang.Intergranularcorrosionofstainlesssteelinmoltencarbonatesalt[J].JournalofMaterialsScienceLetters,1997,(16):1387.[10].[M].:,1982,1.[11].[J].,2003,(2):45.[12],.[J].,1997,9(2):153.[13],.[J].,2001,18(5):434.[14].[J].,2002,23(10):441.[15],.[J].,1998,19(4):369.[16]OVKasparova.Intergranularcorrosionofnickelalloys(Re2view)[J].ProtectionofMetals,2000,36(6):524.[17]ADISchino,JMKenney.Effectofgrainsizeonthecorrosionresistanceofahighnitrogen2lownikelausteniticsteel[J].Jour2nalofMaterialsScienceLetters,2002,(21):1969.[18]SFrangini.CorrosionbehaviorofAISI316LstainlesssteelandODSFeAlaluminideineutecticLi2CO32K2CO3moltencarbon2atesunderflowingCO22O2gasmixtures[J].OxidationofMet2als,2000,53(1/2):139.[19]RAbdel2Karim,IElmahallawi,KEl2Menshawy.Microstruc2tureandcorrosionpropertiesofnitrogenstainlesssteel316Lproducedbyhipping[J].PowderMetallurgy,2004,47(1):43.2007,1980,26,,,:,,:,,(),,,,,:,,:,,,,16,065615,:4-593,7,12,84:021-65527642::99:200437:(021)655567753290:[phone]E-mail:[e-mail]@81890.net06318