合金元素对钢热处理的影响

:2006209218:(1968182),.,,,:0213856057036E2mail:[e-mail]1,2,2(1.,230051;2.,230009):,,Bs,Ms,:;;;:TG142.33:B:100821690(2007)01200632005EffectofAlloyElementsonHeatTreatmentofSteelsDINGFeng1,2,ZHANGYan2(1AnhuiVocational&TechnicalCollege,Hefei230051,Anhui;2.HefeiUniversityofTechnology,Hefei230009,Anhui)Abstract::Effectofalloyelementshavebeenanalizedonformationrateandgrainsizeofaustenite,onnucleationandnucleusgrowthrateduringpearlitetransformation,onbainitestartingpointBsandbainitetransformationrate,onmartensitestartingpointMsandmartensitedecomposition,aswellasoncarbideformationandsecondaryhar2deningeffect.KeyWords:alloyelement;heattreatment;austenite;tempering,,1,111AC1,,TiNbZr,,,,,;,NiCo,,112MnP,,TiZrNbV,,,;WMoCr;SiNiCu;Mn,,,2,362007221©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),,CoAl,:NiNG,,1%NiG1Tn[1]NiG11Fig.1EffectofalloyelementsongrowthrateofpearliteatdifferenttransformationtemperaturesCrGMoNG,Tn,Cr1Mn,G;,GMnG22(680)Fig.2Effectofmanganesecotentongrowthrateofpearlite(isothermallytreatedat680)CoNG:660670,1%Co0.95%CGN23,343(672)Fig.3Effectofcobaltonnucleationrateofpearlite(transformedat672)4(660)Fig.4Effectofcobaltongrowthrateofpearlite(transformedat660)212,,BsCoAl,CMnNiCrCuMoSiWVBCMnNiCr,Mo,MnCrMo,,,56462007221©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:,,,,CMnNi,BsBs;,,CrMnWV,,,,Al,Co,,AlCo,,,,213,,Ms,,AlCo,,C,,,NiSiCuMn,C,C77019%CCFig.7EffectofmanganeseonC2curveofcontaining0.9%C10152%Mn;21121%Mn;32186%MnCrMoWVTiC,C,:C,C[2],8Ms,9AlCoMs,MsSiBMs1%Ms:562007221©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.()-45-35-26-300-25-7+12+18MS,3,,,,311,,,120150,,150,,,VTiNbMoWCr,Mn,AlSi,NiCuSiAl,,260350,,,,,11(1h)Table1Effectofalloyelementsonthemartensitedecomposition(temperedfor1h)/0.4%C0.37%C5.60%Ni0.37%C2.40%Mn0.41%C3.60%Cr0.38%C1.30%Mo0.39%C1.37%V0.41%C1.75%Si(%)2000.250.230.240.290.280.300.303000.150.110.130.200.180.160.264000.050.030.060.130.110.110.155000.010.000.020.060.050.100.01312,100,150,,MoWVTiNbCo,500600,,662007221©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[3],,1010MoTiVCrFig.10SecondaryhardeningofsteelswithMo,Ti,V,Cr:Mo2:0143%C,516%Mo;V:0132%C,1136%V;Ti:0150%C,0152%Ti;Mo1:0111%C,2114%Mo;Cr:0119%C,2191%Cr;C:0110%C,,,,,,;,,313,,,,300;450550(650),,CrMnSi,,,NiVNi-SiNi-MnNi-Cr,MoWTiAl,Mo,CrMnNi,MoWVTi11(:)11Ni-Cr450168hFig.11EffectofimpuritiesandalloyelementsontemperbrittlenessofNi2Crsteeltemperedat450for168h4,,,[1].(3,1)[M].:,2002.[2],.[M].:,2001.[3].[M].:,2005.762007221©1994-2008ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.