固溶-时效热处理工艺对近β钛合金显微组织演化与力学性能的影响（英文）.docx

固溶-时效热处理工艺对近β钛合金显微组织演化与力学性能的影响（英文）
TheInfluenceofSolutionTreatmentandAgingHeatTreatmentonMicrostructureEvolutionandMechanicalPropertiesofNearBetaTitaniumAlloys
Abstract:
Themicrostructureandmechanicalpropertiesofnearbetatitaniumalloyscanbesignificantlyinfluencedbyheattreatmentprocessessuchassolutiontreatmentandagingtreatment.Thisresearchpaperaimstoinvestigatetheimpactofsolutiontreatmentandagingheattreatmentonthemicrostructureevolutionandmechanicalpropertiesofnearbetatitaniumalloys.Thepaperfirstintroducesthebackgroundandsignificanceofstudyingtheheattreatmentofnearbetatitaniumalloys.Itthenexaminestheeffectsofsolutiontreatmentandagingheattreatmentonthemicrostructureandmechanicalpropertiesofnearbetatitaniumalloysthroughcomprehensiveliteraturereview.Themechanismsbehindthemicrostructuralevolutionduringsolutiontreatmentandagingheattreatmentarediscussed,alongwiththeresultingchangesinmechanicalproperties.Finally,thepaperconcludeswithasummaryofthefindingsanddiscussesthepotentialapplicationoftheseheattreatmentprocessesintheproductionofnearbetatitaniumalloys.
Keywords:nearbetatitaniumalloys,solutiontreatment,agingheattreatment,microstructureevolution,mechanicalproperties
1.Introduction
Nearbetatitaniumalloysarewidelyusedinaerospace,automotive,andbiomedicalindustriesduetotheirexcellentcombinationofhighstrength,lowdensity,goodcorrosionresistance,andbiocompatibility.However,themechanicalpropertiesofthesealloysarehighlydependentontheirmicrostructure,whichcanbetailoredthroughheattreatmentprocesses.Solutiontreatmentandagingheattreatmentaretwocommonlyemployedprocessesthatcansignificantlyaffectthemicrostructureandmechanicalpropertiesofnearbetatitaniumalloys.
2.InfluenceofSolutionTreatmentonMicrostructureandMechanicalProperties
Solutiontreatmentinvolvesheatingthenearbetatitaniumalloyabovethebetatransustemperatureandthencoolingrapidlytoroomtemperature.Duringthisprocess,theequiaxedbetaphasetransformsintoasupersaturatedalphaphase.Themaineffectsofsolutiontreatmentonthemicrostructureandmecha