搜索
©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(,116028):,Cu/,Cu,2,300MPa/,,;/,,;,,,:/;;Cu;:TG142171:A:100926264(2010)0120126206MicrostructureandmechanicalpropertiesoftransientliquidphasediffusionbondingzoneoflowcarbonsteelCufoil304stainlesssteelcompositepipeCHENRu2shu,ZHANGFeng2gang,LIUShi2cheng,LIUDe2yi(CollegeofMaterialsScienceandEngineering,DalianJiaotongUniversity,Dalian116028,China)Abstract:Composition,microstructureandperformanceofthetransientliquidphase(TLP)diffusionbondingzoneoflowcarbonsteel/stainlesssteelusingCuinterlayerwereexaminedbymeansofSEMandOM,EDSanalysis,microhardnesstestandsheartest.Theresultsshowthatthemetallurgicalbondoflowcarbonsteelandstainlesssteelisobtainedbytheprocessofcold2drawandTLPdiffusionbondingusingCuasinterlayer,andcompressionshearingstrengthofthebondingzoneisover300MPa.Atthecopper/stainlesssteelinterface,liquidcopperdiffusesalongaustenitegrainboundaryandformsisolated2islandaustenitedistributedincoppermatrix.Ontheotherhand,microstructureofcontinuousisland2formiron2richphaseformsandgrowtocoppermatrixaspinetreeformatcarbonsteel/copperinterface.Withinaspecificrangeoftemperatureandtime,theamountofiron2richphase,hardnessandshearingstrengthofbondingzoneincreasewithincreasingdiffusionbondingtemperatureandtime.Keywords:carbonsteel/stainlesssteel;transientliquidphasediffusionbonding;copper;shearingstrength:2008208226;:2009206215:(1953),,,,:0411281884243,E2mail:chenrushu@yahoo.com.cn/,,,CrNi70%80%[1][2],,,2,,SiB[324],[5],,,,Cu,FeCrNi,[6],CuCu[728]/,/1©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:10%NaOH,10%HCl,;10%NaOH,1(wt%)Table1Compositionoftestedmaterials(wt%)MaterialCuZnCSiMnPSNiCrFe304stainlesssteel--010601550190102801017810618146Bal.Copperfoil9917----0103----Lowcarbonsteel0117-012001250148010130101301030104Bal.,,,,11001200,015115h,/,,4%HNO3,JSM2630LV(SEM)(OM),(EDS)FM2700,0149N1(a)110mm,1(b),31(a);(b)Fig11Schematicofshearstrengthtest(a)samplingposition;(b)specimenandloading2211110012000156h,300MPa,21100015h,308MPa;3h1200,;,11501100,,2Fig12Relationshipofshearstrengthofthediffusionbondingjointwithdiffusiontemperatureandtime212,,[9],,,,721©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(a)1100015h;(b)1100110h;(c)1100115h;(d)1150015h;(e)1200015h;(f)1100610h;(g)1100110h1100015h,//,,(3(a))/,,,,(3(a)),,10m/,,,[10],3(a)A,,80m120m,,1030m,,,3(b)(c)(d)(e),,,,,3(b)(c)BC,/,,120m140180m,,,3(f)/(3(g)ABCD)EDS,220149N,211001hTable2EDSpointanalysisresultandmicrohardnessforthespecimendiffusedat1100for110hPositionMicrostructureHV0105Composition/wt%FeCuCrNiFig.3AFerrite14810010---Fig.3BIsland2formmicrostructure280741027140131754183Fig.3CCoppermatrix753159418801660196Fig.3DAustenite23075127-171447130821©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(b)11001h/FeCrNiCu,FeCrNiCu,////,FeCrNiCuCrNi,/,20,Cu,Ni,FeCrCu,140m,,(),FeCrCu,FeCr41100110hEDSFig14ResultsofEDSanalysisforthespecimendiffusedat1100for1h,,55a/,bcdef1100015h11001h1100115h1150015h1200015h/,,120150HV;,,200250HV,;/,/,,,,,,;,,,,,,,,,2,5Fig15Microhardnessofthebondingregionunderdifferentprocessingconditions,/,,,,,1030m,,,,,,921©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[10],,213,,:()2+2,,,2,,,,,[11],,,,,,/[10],,,,2,:,,,,[11],,,10-7mm,,FeCrNi,FeCrNi,,,,,,Ni,FeCr,Cu,[12]/,,,,,,,FeCrNi,,CrNi,,;,CrNi,,31),2/,300MPa;2),,CrCuNi,,,,;3)/,410MPa[1],,.[M].:,2005.[2],,.[J].,2002,16(7):41-43.LIUXiao2tao,ZHANGTing2an,CUIJian2zhong.Technologyofcladmetalproductionanditslatestprogress[J].MaterialsReview,2002,16(7):41-43.[3]GaleWF,ButtsDA.Transientliquidphasebonding[J].ScienceandTechnologyofWeldingandJoining,2004,9(4):283-300.031©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[4],,,.2[J].,2004,40(6):653-658.ZHANGGui2feng,ZHANGJian2xun,PEIYi,etal.Propertiesofthejointsbondedbytransformation/diffusionbrazing(T/DB)anddiffusionbehavioursofthemajorelements[J].ActaMetallurgicaSinica,2004,40(6):653-658.[5],,.[J].(),2003,24(11):1053-1056.ZUGuo2yin,YUJiu2ming,WENJing2lin.Effectofinterlayoninterfacialbondingpropertiesofstainlesscladsheets[J].JournalofNortheasternUniversity(NaturalScience),2003,24(11):1053-1056.[6],,.V+Cu[J].,1997,(2):2-6.SUNRong2lu,ZHANGJiu2hai,HUANGXi2dong.InfluenceoftransitionmetalV+CuonpropertiesofdiffusionbondingofTiandstainlesssteel[J].Welding&Joining,1997,(2):2-6.[7],,,.CuSiCp/AlMMCsTLP[J].,2005,34(1):12-14.ZHANGJian2feng,JIANGShi2hang,JINZhao2yang,etal.AnalysisofprocessofSiCP/AlMMCsTLPdiffusionandbondingwithCuinterlayer[J].WeldingTechnology,2005,34(1):12-14.[8],,.Cu2SnQ235[J].,2006,(4):21-28