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©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(AlSiMnFe),,::TG292:A:1001-2449(2000)04-0010-03,,,,,,[1]:Al2O3,AlSiMnFe[2]:Fe,AlSi12Cu,Neophot21S2520PhilipsSEM515,711,1()100,(1),,,200,,Fe(2),615,,,,,,a.250b.50022,AlSiMnFe,,Ti01XXX,,1933,,,1954(200030):2000-04-03:2000-04-26(3161A)©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(FeMn)3Si2Al15(FeMn2Cr)3Si2Al15[3];AlSiMnFeAlSiMnFeCr[1,4,5]2,HV630,HV6873,AlSiMnFe9,,2AlSiMnFe(9.810-2N)HV()()6348825745526864526302.2,AlSiMnFe,,0.5%HFSi,,AlSiMnFe(3),36253,HV1050,[3,5](HV900HV1300)3(+Si)(9.810-2N)HV101894611871050()68.67476.473(+Si)1221131191183:()(+Si)159,;(+Si)Si,,HV118,,(+Si),2.3TiTi,()(1),:w(Ti)=32.77%,w(Si)=32.17%,w(Al)=35.06%,Ti(Al2Si)2[3]4,HV951,4Ti(9.810-2N)HV830.6871.611519513AlSiMnFeFe,Mn,FeMn,,,AlSiMnFe,AlSiMnFe47004h,(Al9Fe2Si2),AlSiMnFe;[1],A380680h,FeMn()5%2%,FeMn56,FeMn,Si()20%6%10%,AlSiMnFeFeMnAlSiMnFe:FeMn,AlSiM2nFe,[2](AlSiMnFe):w(Fe)+2w(Mn)+3w(Cr)K,K,A380650,K1.81.9,FeMn,Si(12.5%),,Si,Ti,Ti11©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(1)Fe,MnTi,Si,(2),,,(3),,(4),,,,,,,,1KayeA,StreetA.Die2CastingMetallurgy(ButterworthMonographsinMateri2als).London&Frome,England:Butter&TannerLtd,1982.71792,.B390.,1999(1):30313MondolfoLF...:,1988.4,,..:,1987.5,,..:,1983.(:),3600:,1200mm;,;,30s1min,:::(021)58670601:200137,,;,;,,,,,:w(Al2O3)=44%48%,w(SiO2)=47%51%,w(Fe2O3)1.5%,,w(TiO2)2.2%,w(CaO+MgO)0.5%,w(K2O+Na2O)0.5%,0.3%::013603159399:0315-7430797()7123935()::06370121©1994-2009ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(Series:No.114)CONTENTS&ABSTRACTMicrostructureCharacteristicsandPhaseComponentsofAl2Si2Ni2Cu2MgAlloybySprayDepositionWangFeng(UniversityofScienceandTechnologyBeijing,Beijing,Chi2na)XiongBaiqingYangBinCuiHuaDuanXianjinZhangJishanZhangYongan2000(4)0103AbstractAl2Si2Ni2Cu2Mgalloywasfabricatedbyspraydeposi2tiontechnique.Themicrostructureofalloyindeposited,ex2trudedandT6heattreatedstateshasbeenanalyzed.There2sultsshowedthattheexistenceofthreenickel2containinginter2metalliccompoundinthemicrostructurecanpreventeffectivelythediffusionofsiliconatomsandrestrainthegrowthofprimarysiliconparticlesunderextrudedandT6heattreatedconditions.Furthermore,theprecipitationstrengtheningeffectofCuwithT6heattreatmentwasinfluencedbytheformationofCu2con2tainingAl2Siintermetalliccompound.KeyWords:SprayDeposition,Microstructure,HotEx2trusion,IntermetallicsSolidificationStructureofLY12AlloyunderPulseElectricCurrentwithHighDensityZiBingtao(NortheasternUniversity,Shenyang,China)CuiJianzhongBaQixian2000(4)0406AbstractSolidificationstructureofLY12aluminumalloyunderpulseelectriccurrentwithhighdensitywasstudied.There2sultsshowedthatthepulseelectriccurrentwithhighdensityobviouslyimprovedthesolidificationstructure.Themicrostruc2tureisobviouslytoberefinedandequiaxedascomparedwithspecimenuntreatedwithelectriccurrent.Inaddition,thestrongerthedensityofpulseelectriccurrentwas,thebettertherefiningeffectwas.KeyWords:PulseElectricCurrent,SolidificationStruc2ture,AluminumAlloy,GrainRefinementRelationshipBetweenMechanicalPropertiesandMi2crostructureCharacteristicsofH62BrassGuoFeng(InnerMongoliaPolytechnicUniversity,InnerMongolia,China)KangBuxiao2000(4)0709AbstractThemorphologyandrelativequantityof,phasesinmicrostructurearealteredandconstituentanddistributionofinclusionareimprovedthroughaddingREelementCetoH62brassandusingrecrystallizationannealing.Thequantitativerelationshipbetweenmicrostructurecharacteristicsandmechan2icalpropertiesisobtainedbymeasuringrelevantmechanicalpropertyparameters.Theresultsshowedthatthereisaobvi2ouslycorrespondingrelationbetweenrelativequantityof,phases,distributionofphaseandmechanicalpropertiesinH62brass.Theinclusionimprovementisalsofavorabletopropertyimprovement.KeyWords:H62Brass,MechanicalProperties,Mi2crostructureCharacteristicsHardSpotandHardMetallicInclusioninAluminumDieCastingLuShusun(ShanghaiJiaotongUniversity,Shanghai,China)XueLimingXuMinggangZhaoYuChenMinzhiYeMiaoChenDingxingXiaGuangyiTaoChenhuaWangCheng2000(4)1012AbstractThemorphologyandnatureofseveralkindsofhardmetallicinclusion(suchasAlSiMnFeetc.)inbothhardspotsandthehardermatrixzoneofaluminumdiecastingareinvesti2gated.Thecauseforformationoftheseinclusionisdiscussedandapproachstopreventionareproposed.KeyWords:HardSpots,MetallicInclusion,AluminumDieCastingAnalysisoftheFlowStatusforTi26Al24VAlloyMeltdur2ingtheCentrifugalCastingProcessGuoJingjie(HarbinIn2stituteofTechnology,Harbin,China)ShengWenbinSuYan