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:2003207229;:2003209227:(19672),,.:.Email:hejiuhui125@sina.com1,1,2(1.618,710061;2.,710072):Mg2LiMg2Li2AlMg2Li2Si,:Mg2Li;;:TG29:A:100028365(2004)0120019203StudyStatusofMg2LiSystemAlloysYANGGuang2yu1,HAOQi2tang1,JIEWan2qi2(1.618InstituteofAviationIndustryNo.1Group,Xian710061,China;2.SchoolofMaterialScience&Engineer,NorthwesternPoly2technicalUniversity,Xian710072,China)Abstract:Studystatusofthehighstrengthandlight2exceedingMg2Lialloyisintroduced,aswellasstudyheadwayofMg2Libinaryalloy,Mg2Li2AlandMg2Li2Simulti2alloy,productiontechniqueforincreasingtheirpropertyarenarratedindetail.Moreover,applicationofalloyonaviationandspaceflight,weaponequipment,automobileisadoptedwidely.Keywords:Mg2Lisystemalloys;Super2plasticity;AlloyingMg2Li,,()Mg2Li,,Mg2Li1MgLi,hcpbcc,[1]Li0.53g/cm3,Li,,Mg2Li,AlZnMnRE1.1Mg2Li,Li2Mgc/a,{1010},1210,{0001}1210,Mg2Li+,Mg2Li(Mg28.5LiMg29Li),350,610%460%[224][5]Mg-40%Li,DritsMg2Li,LiMg2Li2Mg,+,,Li2Mg,+,2Mg,Li10%Li+,Li,;Mg2Li,w1%Li,w1%Li,+Liw10%,Mg2Li,Li,,(60100),Liw3%91Vol.25No.1Jan.2004FOUNDRYTECHNOLOGY©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.Mg2Li,,[6]1.2Mg2LiMg2Li,,,Mg2Li2AlMg2Li2Si1.2.1Mg2Li2AlMg2Li2Al,Hansen[7]Mg2Li2Al,2Mg,bcc,AlLi(B2),,Mg2Li2AlAbhijitDutta[8],Mg28Li26.5Al,0.550.45300Mg28Li26.5Al,200400,1.6710-3sec-1,379%Kabyshev227,MA21(Mg28.1Li25.2Al24.7Cd21.38Zn)450%Mg2Li2AlAl,,30%40%SnBiCaAgNdCeLaCuNiBa,Ag,Liw10%20%,,LiAlZnAgCuCdNdLaCe,ZnAgCuNdLaZrY[9]Mg2Li2Al,Koryakin[10]Mg28Li25.24Al21.48Zn20.25Mn24.49Cd20.064Ce20.0038Na20.0011K,,,,,,,,,Kazakov[11]Mg2Li2Al2Mn(LA141)Mg2Li2Al2Zn2Mn2Ce(MA18VMD5210),180200MgLi2M(M:),,,MgLi2MLi,MgLiMMg2Li2Al100150,Si,,,1.2.2Mg2Li2Si,SiMg(6350.003%),Mg2Si(RSP)Mg2SiMg2Si,Mg-5%SiRSP,4Mg2Si,Mg2Si,SiMg2LiSiddharthaDas[12]Mg2Li2Si,SiMg2Li2SiMg2Si,LiMg2Si,8%(Si+Li)LiMg2Si,Mg2xLi23Si,Mg2Si2MgLi2Mgc/aMg2xLi23Si,LiMg2LiSi,,SiMeschterONeal[13]Mg29Li,Mg29Li21SiMg29Li21Ce,Mg-9Li02FOUNDRYTECHNOLOGYVol.25No.1Jan.2004©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,SiCe,,Mg2Li2Ce,Mg2Li2SiMg2Li,,Mg2Li2SiHall-Petch,1.3Mg2Li,,[5]Mg2Li,,,,,Mg2Li,,Mg2Li,,Mg2Li2Mg2LiMg2Li,;Mg2Li,,,,;,,,Mg2Li,Mg2Li,[1]OAKaibyshev.SuperplasticityofAlloys[J].IntermetallicsandCeramics,1992:1172147.[2]KHigashi,JWolfenstine.MicrostructuralEvolutionduringSuperplasticFlowofaBinaryMg-8.5%LiAlloy[J].MaterialsLetters,1991,10(7,8):3292332.[3]JWolfenstine,GGonzalez,KHigashi.SuperplasticMg2Li,SuperplasticityandSuperplasticforming[J].Theminerals,MetalandMatrialsSociety,1995:75282.[4]PMetenier,GGonzalez,OARuans,etal.SuperplasticBehaviorofAFineGrainedTwoPhasedMg-9%LiAlloy[J].MaterialsScienceandEngineering,1990(A125):1952202.[5].[J].,2001(4):426.[6]TAida,HHatta,CSRamesh,etal.WorkabilityandMechanicalPropertiesofLight2than2waterMg2LiAlloys[A].Proceedingof3rdinternationalMagnesiumconference[C].1997:1442152.[7]FHansen,Eschurmann,GFormneyer.ThedeformationandstrengtheningmechanismsofthemultiphaseMG2Li2Alalloys[J].Metals,1986,40:126.[8]AbhijitDutta,PPrabhakar,DAnilKumar.SuperplasticBehaviorofMg-8Li-6.5Alalloy[J].ManufacturingTechnology,2000:4592463.[9]RMBrodskaya,AMGlagoleva,BDBorisova.TheMicrostructureofMg211.5Li-2.5Al4.0-Zn-0.4Mn-0.2CeAlloy[J].MetalSci.andHeatTreat,1975(17):526.[10]YDKoryakin,MMShteinberg,NTKareva,etal.TheSofteningBehaviorofMg2LiAlloyDuetoNatureAgeing[J].Non2FerrousMet.Res.,1980,8(5):477.[11]AKKazakov,MATimonava,LGBorisova.MechanicalPropertiesandWorkabilityofMg2Li2Al-basedAlloys[J].MetalSci.andHeatTreat.(USSR),1983,25:9210.[12]SiddharthaDas,Mg2LialloysofRSP[J].ManufacturingTechnology,1992:2362250.[13]PJMeschter,JEONeal.EffectofRSPontheMicrostructureandthePropertiesofMg-9Li,Mg-9Li-1SiandMg-9Li-1CeAlloys.Met.Trans.A,1984(15A):237.200314(Ei)PageOne43;(MA)62118;()174;120121/2004:©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.