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AZ91DAZ91DT4GrapheneSP2/1.5104cm2V-1s-15104Wm-1K-1125GPa1100GP[1-3]Novselov[4]J.Wang[5]CNTs/[6]0.3wt.%GNPs/249MPa62%1500MPa125GPa[7]40m+10.3wt.%322MPa454MPa58%25%M.Rashad[8][9]1-3m+0.3wt.%1M.Rashad[10,11]GNPs/GNPs+CNTs/1//CNTs/[12][13-15]2010Fan[13]Liu[16]Kondoh[17]CNTs2-4nmMgOCNTs[18][19]/AZ91D/1AuthorMaterials0.2%YS(MPa)UTS(MPa)(%)Vickershardness(HV)J.Wangetal[6]PureAl/154//0.3wt.%GNPs/Al/249//S.Yanetal[7]Al-Mg-Cualloy20436411.03/0.3wt.%GNPs/Al-Mg-Cu32245411.80/M.Rashadetal[8]PureAl17052524.513.427650.3wt.%GNPs/Al195328059.531.5855M.Rashadetal[10]Mg-1Al-1Sn16142365.116.73/0.18wt.%GNPs/Mg-1Al-1Sn2085.3269310.93.4/M.Rashadetal[11]Mg-1Al155320236.90.54620.6wt.%GNPs/Mg-1Al204926584.00.66320.6wt.%CNTs/Mg-1Al21052874100.36150.6wt.%[1:5](CNTs+GNPs)/Mg-1Al18542343160.556311.1AZ91D2[20]10-100m3aHummersMulti-layergraphemeoxide,MGO1a25-220m1bcSEMTEM100nm2AZ91D[20]Table1ChemicalcompositionofAZ91magnesiumalloy(wt.%)[20]AlZnMnMg9.50.80.40.08Fig.1(a)SEM;(b)TEM.1.20.3wt.%0.5wt.%200ml1hMGOAZ91D100ml200rmp/minMGO3ml/min80MGO/AZ91DMGO/AZ91D40150mm120MPaMGO/AZ91D6002h/AZ91D12mm3501m/min11:1T42UTM5105MH-50100g15sQuanta200FSEM(b)(a)(c)0.5mFig.222.1AZ91D3AZ91D/AZ91DSEM3a100m3a-14b-cAZ91D3b-1,3c-1[21,22][23]30min4b4c3c-13b-2(a)(a-1)SamplesformechanicaltestFig.3SEMofMGO-AZ91Dcompositepowder(aa-1)AZ91Dpowders(b,b-1,b-2)0.3%MGO/AZ91D(c,c-1)0.5%MGO/AZ91D(b-1)(c)(b)(c-1)GrapheneoxideGrapheneoxide(b-2)GrapheneoxidecoatedonthesurfaceFig.4AZ91D2.15a/AZ91DHCl-b5a3423cm-1OH1633cm-1C=O1384cm-1OH1110cm-1802C-O-C[24-26]MGO5bC-OHMGO[27]300-500-C=OC-OH700-900C-OH[26]400COOHC-OHC-O-CAZ91DMgCaMgAlZnFe[28]Xie[29]CaMgOOHMg(OH)2300MgOH2O[30]MgOH2XRDMGOMgOAZ91DMgOH2(a)MGOsolution(b)MGO@AZ91powder(c)MGO@AZ91powder5MGO5MGO/AZ91DMGOFig.6.EffectsoftheMGOadditiononthemechanicalpropertiesofMGO/AZ91Dcomposites.(a)Tensilestrength.(b)Micro-hardnessandElongation32.3GO/AZ91DMaterials0.2%YS(MPa)UTS(MPa)(%)Vickershardness(HV)AZ91D162.92221.079.776.90.3%MGO/AZ91D211.86254.2111.480.10.5%MGO/AZ91D281.85345.8914.292.1Fig.7.XRDpatternofAZ91alloyandGN/AZ91DcompositeFig.8Grainsizeofas-extrudedalloyandcompositeswithdifferentcontentofGO2.32.47AZ91D7(a)GO7(c-f)7g7df7hCAlOAlAabcegdfFig.10.Fig.5SEMimageofthefractureofAZ91alloy,itscompositesandEDSanalysis(a-b)AZ91alloy(c-d)03wt.%GN/AZ91D(e-f)0.5%GN/AZ91D(g-h)EDSanalysis3[1]LeeC,WeiX,KysarJW,etal.Measurementoftheelasticpropertiesandintrinsicstrengthofmonolayergraphene[J].science.2008,321(5887):385-388.[2]BolotinKI,SikesKJ,JiangZ,etal.Ultrahighelectronmobilityinsuspendedgraphene[J].SolidStateCommunications.2008,146(9):351-355.[3]BalandinAA,GhoshS,BaoW,etal.Superiorthermalconductivityofsingle-layergraphene[J].Nanoletters.2008,8(3):902-907.[4]NovoselovKS.ElectricFieldEffectinAtomicallyThinCarbonFilms[J].Science.2004,306(5696):666-669.[5]WangJ,LiZ,FanG,etal.Reinforcementwithgraphenenanosheetsinaluminummatrixcomposites[J].ScriptaMaterialia.2012,66(8):594-597.[6]JiangL,LiZ,FanG,etal.Theuseofflakepowdermetallurgytoproducecarbonnanotube(CNT)/aluminumcompositeswithahomogenousCNTdistribution[J].Carbon.2012,50(5):1993-1998.[7].[J]..2014(04):1-6.[8]RashadM,PanF,TangA,etal.EffectofGrapheneNanoplateletsadditiononmechanicalpropertiesofpurealuminumusingasemi-powdermethod[J].ProgressinNaturalScience:MaterialsInternational.2014,24(2):101-108.[9].[J]..2013,36(6):127-134.[10]RashadM,PanF,AsifM,etal.PowdermetallurgyofMg1%Al1%Snalloyreinforcedwithlowcontentofgraphenenanoplatelets(GNPs)[J].JournalofIndustrialandEngineeringChemistry.2014(0).[11]RashadM,PanF,TangA,etal.Synergeticeffectofgraphenenanoplatelets(GNPs)andmulti-walledcarbonnanotube(MW-CNTs)onmechanicalpropertiesofpuremagnesium[J].JournalofAlloysandCompounds.2014(0).[12]DaiB,FuL,LiaoL,etal.High-qualitysingle-layergrapheneviareparativereductionofgrapheneoxide[J].NanoResearch.2011,4(5):434-439.[13]FanZ,WangK,WeiT,etal.Anenvironmentallyfriendlyandefficientrouteforthereductionofgrapheneoxidebyaluminumpowder[J].Carbon.2010,48(5):1686-1689.[14]PeiS,ChengH.Thereductionofgrapheneoxide[J].Carbon.2012,50(9):3210-3228.[15]ONeillA,BakirtzisD,DixonD.Polyamide6/Graphenecomposites:Theeffectofinsitupolymerisationonthestructureandpropertiesofgrapheneoxideandreducedgrapheneoxide[J].EuropeanPolymerJournal.2014,59:353-362.[16]LiuP,HuangY,WangL.AfacilesynthesisofreducedgrapheneoxidewithZnpowderunderacidiccondition[J].MaterialsLetters.2013,91:125-128.[17]KondohK,FukudaH,UmedaJ,etal.Microstructuralandmechanicalbehaviorofmulti-walledcarbonnanotubesreinforcedAlMgSialloycompositesinagingtreatment[J].Carbon.2014,72(0):15-21.[18]./[J]..2009(02):35-36.[19]GohCS,GuptaM,WeiJ,etal.CharacterizationofhighperformanceMg/MgOnanocomposites[J].Journalofcompositematerials.2007,41(19):2325-2335.[20]HortN,MathaudhuSN,NcelamegghamNR,etal.MagnesiumTechnology2013[J].2013.[21]LeeKE,OhJJ,YunT,etal.Liquidcrystallinitydrivenhighlyalignedlargegrapheneoxidecomposites[J].JournalofSolidStateChemistry.2014.[22].[J]..2009(3):13-18.[23]ParkS,LeeK,BozokluG,etal.Grapheneoxidepapersmodifiedbydivalentionsenhancingmechanicalpropertiesviachemic