时效时间对ZL210A铸造铝合金力学性能和微观组织的影响

29120092JOURNALOFAERONAUTICALMATERIALSVol29,No1February2009ZL210A贾泮江,陈邦峰(,100095):170ZL210A:4h,500MPa,435MPa150HBS,5%,,,G.P.IG.P.II(),,:;ZL210A;;;:TG292:A:1005-5053(2009)01-0047-04:2008-05-12;:2008-06-12:(1970),,,(E-mail)pan-jiangjia@biamaccn,A-lCu,MnTi[1]A-lCu,Cu-Al,548565%,,,,,[2],:(SSSS)GPIGPII()(Al2Cu,)GPII,GPI,,[3]ZL210AA-lCu-Mn,,,,,,ZL210A,ZL210A,1实验方法ZL210A9999%A-lCu,A-lMn,A-lTiCd,280kg75kW,1,710,,36kW,(5355)7h,(5455)8h,20s50~608h,4kW,170,2h,3h,4h,5h,6h,7h,8h,9h,10h,11h,1ZDM10T,T-2,JEM-200CX,PHILIPS-XL20,HFHNO3HClH2O=11525952结果及分析212,01,,,,2h,291ZL210A(/%)Table1ChemicalcompositionsofZL210Aalloy(massfraction/%)ElementCuMnTiCdAlSpecification45~51035~08015~035007~025BalTestingresult466060021017Bal1[4]Fig1Sandas-castsamplemachined4h,,b,02HBS500MPa,435MPa150;,,1~4h,517%5%,,,6%,ZL210A,2(a);(b)Fig2Effectofageingtimeonmechanicalpropertiesofsandsamples(a)strengthandhardness;(b)elongation4h,22710,3,2h,,3a;4h,,3c;7h,,3e;11h,,3gA-lCu[3,5,6],:(SSSS)GPIGPII()(Al2Cu,),,,Cu,GPI,,-Al(3b),,4h,GPIGPII()(3d),Cu,;7h,GPIGPII(),(3f),-Al(100)//(100),[100]//[100],[7]11h,(Al2Cu),,,,2,4h,481ZL210A3TEM(a)2h,;(b)2h,;(c)4h,;(d)4h,;(e)7h,;(f)7h,;(g)11h,;(h)11h,Fig3TEMmicrographsofsandsamplesofdifferentagingtime(a)2h,BFimages;(b)2h,DFimages;(c)4h,BFimages;(d)4h,DFimages;(e)7h,BFimages;(f)7h,DFimage;(g)11h,BFimages;(h)11h,DFimages237104,,,,,,,,4Fig4Effectofdifferentageingtimeonfracturesurfaceofsandsamples(a)2h;(b)4h;(c)7h;(d)11h49293结论(1)4h,,b02HBS500MPa435MPa150,5%(2),GPI,,GPIGPII(),(Al2Cu),(3),,,:[1],.[J].,1993(1):4-6.[2],,,.[M].:,2002:258-263.[3],,,.[M].:,1979:35-36.[4].3:[M].:,2001:358-455.[5]TAKEDAM,MAEDAY,YOSHIDAA,etal.Discontinu-ityofG.P.(I)Zoneand-PhaseinanA-lCuAlloy[J].ScriptaMaterials,1999,41(6):643-649.[6]MATSUBARAE,COHENJB.TheG.P.ZoneinA-lCuAlloy[J].Actameta,l1985,33(11):1945-1955.[7],,.A-lCu[J].,2001,26(12):28-31.EffectofAgeingTimeonMechanicalPropertiesandMicrostructuresofZL210ACastingAluminumAlloyJIAPan-jiang,CHENBang-feng(BeijingInstituteofAeronauticalMaterials,Beijing,100095,China)Abstract:Thestudywasontheeffectofdifferentageingtimeonthemechanicalproperties,microstructuresandfracturesurfacesoftheZL210AcastingAlalloyat170ageingtemperature.Theresultshowsthatthetensilestrength,yieldstrengthandhardnessofthea-lloyreachthemaximum500MPa,435MPaand150HBs,respectively,whiletheelongationreachestheminimum5%for4hageingtime,andafterthattoremainconstantwithincreasingageingtime.Theageingtimehasabigeffectonthemicrostructures,whichthetransitionisG.P.IG.P.II().Theeffectofageingtimeonthefracturesurfaceislittle,andthefracturesurfacesshowex-cellenttoughness.Keywords:aging;ZL210A;castingAlalloy;mechanicalproperties;microstructures50