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1、JournalofAlloysandCompounds640(2015)210–218ContentslistsavailableatScienceDirectJournalofAlloysandCompoundsjournalhomepage:www.elsevier.com/locate/jalcomEffectofage-formingonmicrostructure,mechanicalandcorrosionpropertiesofanovelAl–Lialloya,b,⇑acH.Y.Li,W
2、.Kang,X.C.LuaSchoolofMaterialsScienceandEngineering,CentralSouthUniversity,Changsha,Hunan410083,ChinabKeyLaboratoryofNonferrousMetalMaterialsScienceandEngineering,MinistryofEducation,CentralSouthUniversity,Changsha410083,Hunan,ChinacGuangzhouKinBonNon-fe
3、rrousAlloyCo.,Ltd,ChinaarticleinfoabstractArticlehistory:Theage-formingtechnologyofAl–Lialloyhascausedconsiderableattentioninrecentyears.Inthisstudy,Received24November2014theeffectsofage-formingonmicrostructure,mechanicalandcorrosionpropertiesofanovelAl–
4、LialloyReceivedinrevisedform30March2015arestudied.Resultsshowthatage-forminginthenovelAl–LialloyenhancesthemechanicalpropertiesAccepted31March2015includingstrengthandelongation,meanwhile,improvesthecorrosionresistance.ThestressduringtheAvailableonline3Ap
5、ril2015agingdoesnotchangethemorphologyofthegrains,butinhibitstheprecipitationofh0phases,promotesprecipitationofTphasesandreducesthedimensionofTphases.Theorientationeffectfortheh0phases11Keywords:isobvious,whilefortheT1phases,thiseffectisnotobviousunderth
6、eloadof100MPa.Atthesametime,Al–Lialloyage-forminghelpstoinhibitgrainboundaryprecipitatecoarseningandthePFZwidening.Age-formingMechanicalandcorrosionpropertiesÓ2015ElsevierB.V.Allrightsreserved.Microstructure1.Introductionfoundthatthemulti-stepheattreatme
7、ntduringageformingcouldcontributetoimprovethestrengthandexfoliationcorrosionInordertoimprovethepayloadandfuelefficiencyofaircrafts,resistance.Liu[10]foundthatthestressappliedduringagingtheAl–Lialloyshavebeenlargelyusedinaerospaceindustrieschangedgreatlyth
8、eprecipitations,butdidnotinfluencethegrainbecauseoftheirattractivecombinationofpropertiessuchaslowermorphologythroughthestudyofstressagingbehaviorofthedensity,higherspecificstrengthandelasticmodulusthanthecon-Al–Cu–Mg–Agallo
