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:2006212207;:2007201210:(19722),,..Vol.28No.3Mar.2007FOUNDRYTECHNOLOGYAl2Mg2Si1,2,3(1.,454000;2.,454000;3.,454000):Al2Mg2Si,MgSiFeZn,:MgSi,1.73;FeZn,:;;;:TG146.2+1;TG113:A:100028365(2007)0320373203InfluenceofAlloyingElementonMicrostructureandPropertyofAl2Mg2SiAluminumAlloyZHANGJian2xin1,GAOAi2hua2,CHENHao(1.InstituteofMaterialScienceandEngineering,HenanPolytechnicUniversity,Jiaozuo454000,China;2.InstituteofMechanicalandDynamicEngineering,HenanPolytechnicUniversity,Jiaozuo454000,China;3.LeagueCommittee,HenanPolytechnicUniversity,Jiaozuo454000,China)Abstract:TheeffectofmainalloyingelementMg,SiandimpurityelementFe,ZnonmicrostructureandpropertyofAl2Mg2Sialuminumalloywasstudied,andthereasonableproposalisgivenbasedonthemechanismofalloyingelement.TheresultsshowthatthemainalloyingelementMgandSihaveimportantaffectonstrengthandcorresion,theirmassratioshouldbelessthannormalvalue1.73.ThesempurityelementFeandZnhavesomeeffectonthestabilityofmicrostructure,theyusuallyinducevariantpointdefectonthesurfaceofproduct.Keywords:Aluminumalloy;Alloyingelement;Microstructure;PropertyAl2Mg2Si,,[1]Al2Mg2SiMgSi,FeZnCuMn,,Al2Mg2Si,,MgSiFeZnAl2Mg2Si1Al2Mg2Si,7.5kW,760,«85mm5606h,300t40mm10mm,2002h,PHILIPS2XL30,WEW21000B,22.1Al2Mg2Si,MgSiMg2Si,,Mg2Si,[2]1.73,373FOUNDRYTECHNOLOGYVol.28No.3Mar.2007Mg2Si,,Mg2Si,,(1),Mg2Si,,Mg2Si,2,Mg2Si,,,,,Mg2Si,1Fig.1EffectofsurplusMgonthetensilestrength2Mg2Si(SEM)Fig.2CoarsenedphaseMg2Siprecipitatedonthegrainboundary:Mg,,,,1.732.2:1.65%(,),0.05%,,0.3%,,[3]Al2Mg2Si,1.73,,0.06%,,,3,;0.06%,Mg2Si,(1),,,,AlFeSi[4],,AlFeSi,,,Al2Mg2Si,,0.06%,3SiFig.3RelationshipbetweensurplusSiandtensilestrength1Tab.1EffectofsurplusSionthepropertiesofAl2Mg2Sialloy10.00%20.03%30.06%40.09%2.3Al2Mg2Si,AlFeSiFeAl3[5],,,,,,,AlFeSiFeAl3Si(2),,,,Al2Mg2Si(47303/2007:Al2Mg2Si3),,,,:,0.20%;,,0.30%2(:V)Tab.2ElectricalpotentialcomparisonofaluminumalloycompotentsCuAl2FeAl3MnAl6AlFeSi99.9%Al-0.53-0.56-0.75-0.58-0.85:0.1V3Tab.3Comparisonoferosiondata(%)/g/g(%)10.305.169205.155120.272420.255.377355.368560.163530.205.586325.578150.1463,3.5%NaCl+1%H2O272h,,2.4,,,,,,[6],,,,,(4),,4Fig.4RelationshipbetweenZncontentandreflectionpropertyAl2Mg2Si,Zn(OH)2-4Zn(OH)-3,-0.76V,(-1.67V),,,,,[7],,,0.06%,Al2Mg2Si,0.01%,,,,3(1)MgAl2Mg2Si,Mg,Mg2SiMg(2)SiAl2Mg2Si,Si,Si(3)FeAl2Mg2Si,,Fe(4)ZnAl2Mg2Si,,[1],,,.[M].:,1994.[2],,.Al2Mg2SiGP[J].,2006,(5):90291.[3]SJAndersen,CDMarioara,AFroseth,etal.CrystalstructureofprecipitateintheAl2Mg2Sialloysystemanditsrelatetothephase[J].MaterSciEngA,2005,(390):1292133.[4],,.[J].,2006,(6):6172619.[5],,,.[J]..2005,(4):3642365.[6]AJDdowell.MetalStructureandCompostionEffectsintheAlkalineEtchingofAl[J],TransInst.Met.Finish,1987,65(4):1472151.[7],.6063[J].,2002,(6):38240.573
本文标题:合金元素对Al-Mg-Si系铝合金组织及性能的影响
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