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1、Availableonlineatwww.sciencedirect.comScienceDirectJOURNALOFIRONANDSTEELRESEARCH,INTERNATIONAL.2008,15(6):87-94EffectofWeldingProcessesandConsumablesonTensileandImpactPropertiesofHighStrengthQuenchedandTemperedSteelJointsGMagudeeswaran',VBalasubramaniarr',GMadhusu
2、dhanReddyZ,TSBalasubrarnaniarr'[1.CenterforAdvancedMaterialsJoiningandResearch(CEMAjOR),DepartmentofManufacturingEngineering,AnnamalaiUniversity,AnnamalaiNagar-608002,TamilNadu,India;2.MetalJoiningSection,DefenceMetallurgicalResearchLaboratory,KanchanbaghHyderabad
3、-560058,AndhraPradesh,India;3.SpecialVehiclesDivision,CombatVehiclesResearchandDevelopmentEstablishment,AvadiChennai-600056,TamilNadu,India]Abstract:Quenchedandtemperedsteelsarepronetohydrogeninducedcrackingintheheataffectedzoneafterweld-ing.Theuseofausteniticstai
4、nlesssteelconsumablestoweldtheabovesteelwastheonlyavailableremedybecauseofhighersolubilityforhydrogeninausteniticphase.Inthisinvestigation,anattemptwasmadetodetermineasuit-ableconsumabletoreplaceexpensiveausteniticconsumables.Twodifferentconsumables,namely,austeni
5、ticstain-lesssteelandlowhydrogenferriticsteel,wereusedtofabricatethejointsbyshieldedmetalarcwelding(SMAW)andfluxcoredarcwelding(FCAW)processes.Thejointsfabricatedbyusinglowhydrogenferriticsteelconsuma-blesshowedsuperiortransversetensileproperties,whereasjointsfabr
6、icatedbyusingausteniticstainlesssteelcon-sumablesexhibitedbetterimpacttoughness,irrespectiveoftheweldingprocessused.TheSMAWjointsexhibitedsuperiormechanicalandimpactproperties,'irrespectiveoftheconsumablesused,thantheirFCAWcounterparts.Keywords:shieldedmetalarcwel
7、dingprocess;fluxcoredarcweldingprocess;austeniticstainlesssteel;lowhydro-genferriticsteel;transversetensileproperty;impacttoughnessQuenchedandtemperedsteelsareusedinmili-metalmustbeavoidedasASSfillersareconsidera-taryapplicationsowingtohighhardness,highblymoreexpe
8、nsive.Intherecentyears,thedevel-strengthtoweightratio,andexcellenttoughness'V.opmentsoflowhydrogenferritic(LHF)steelcon-Thesegradesofquenchedandtempered
