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1、RecentTitaniumResearchandDevelopmentinGermanyD.Helm,O.RoderMTUAeroEngines,Munich,GermanyThispapergivesanoverviewaboutrecentresearchanddevelopmentworkperformedatuniversitiesandmajorresearchfacilitiesaswellasatdifferentareasofindustrycoveringtheproductionandapplicatio
2、nofTitaniumalloysinGermany.ExamplesofresearchaddressingtherelationshipofmicrostructureandmechanicalpropertiesonconventionalTitaniumalloysarepresented;additionally,investigationsoncoatingsprotectingmaterialfromerosionwillbehighlighted.Furthermore,alloyingconceptsandl
3、atestalloydevelopmentsfocusingonγ-Titanium-Aluminidesareshown.Ontheproductionside,areviewofnewdevelopmentsatGermany’smajormelting,forgingandinvestmentcastingfacilitiesisgiven.Finally,abriefsurveyispresentedaboutrecentdevelopmentworkonTitaniumcomponentsusedinawidevar
4、ietyofdifferentapplications,coveringaerospace,aero-engineandautomotiveindustry.Keywords:Ti64,Ti6242,Ti6246,Ti5553,skullmelting,Ti-Erosioncoating,microstructure,fatigue,crackpropagation,thermohydrogenprocessing1.MeltingandCastingwhichisatleastequivalenttothestandardV
5、ARprocessregardingtopaswellasbottomlocationoftheslab.TheThyssenKruppTitaniumGmbH,Germany,andThyssen-microstructure,internalintegrityandmechanicalKruppTitaniumS.p.A.,Italy,havedevelopedaskullpropertiesofTi-6Al-4Vplatesproducedfromskullmeltingroutetoserialproductionof
6、feringabroadrangemeltedslabsaresuitableforaerospaceapplication.Hotofpossibilitiesespeciallywithrespecttoshortageofrawrolledplatesoutoftheskullmeltingfurnacefulfillthematerials.Byskullmeltingtherawmaterialasscrap,aerospacespecificationrequirementsofAMS6945toa1spongea
7、nd/oralloyingelementsareliquefiedinahighextent(Figure1).crucibleandpouredintoamould.ThechargecanbebulkTitan-Aluminium-FeingussGmbH,Bestwig,Germanyweldables,sponge,masteralloys,turnings,briquettes,(Tital)hasdemonstratedtheproducibilityofverythinfeedstockaswellasanyra
8、ndomlyshapedpiecessuitablewalledstructuraltitaniuminvestmentcastingsusingtheirtotheconfigurationofthecrucibleformelting.Bythestandardshell
