cntszm5镁合金复合材料的制备与机械性能研究

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1、AbsttaCtABSTRACTCarbonnanotllbes(CNTs)/ZM5alloycompositeswerefabricatedbystiringcaStingmethodwiththeefectprocedureofthestiringtechnofogystUdiedThemech耐calProPeniesofthecom卯siteswhichwereunderthestateofas一cast，T4solutiontrealmentandhigh，emperalllre讹retes忱d.Themicrostructureand丘acto『aPhswe

2、reobservedandana】ysisedviascaningelectrOnmicroscoPe(SEM)即denergyspectnjmanalysis(EDS).StartingwiththeenhancemenioftheinterfacemoisteningPrOpertyanddispersibilitybetweenCNTs明dZM5allOy’theefectrulesofroom一temeraturemechanicalProPertiesande1evatedtemPeraturePropertiesofcomposi忱swhenenhancln

3、gthemasfr‘tionofCNTsaddltionwcreinvestiga忱dsystematically.Atthesalnetime，thechangeofmicrostrUctureandfract。孚aPhswasinvestigated.T五e化sultssho叭ledthat:CNTscouldbeaddedinio1heMgmoltenallOywithstitringattheten1peraturenearZM5aIloyliquldoid.Whenunderthestateofas，cast，T4solutinn能歌me以朋dhightemp

4、erature，the目ditionofCNTscouldsignifcantlyc曲ancethemechanicalPropertiesofcomPosites，therulesofwhichwerealwaysenhancing，thenreachingthernaximun、助ddroPPingatlast，六刀dalso，NIPlatingCNTscouldreinforcethecomPositesmuchbeterUnderthestaeofas一c韶t，whentheaddltionofCNTswasl.0川肠，tbelensileslrengthand

5、奴elasticmodulusreachedlhe们比axi幻。u们n.Whenthe￡祖itonofCNTswere12wt%ando.SWt%，山emicrohardnesandtheductilityreachedthe伴akvalue化speCtively.AfterT4solution加atment，thetensilestren酗即dtheduc61ityenh朗cedremarkably.buttheelasticmodu1usandthemicrohardnessdeclinedWhentheadd1tionofCNTSwerel.0训肠ando.SWt

6、%，themax加ulnofthetensilestren沙即dtheduclllitywere244MPaand12.26%respectively’Underthestateofhightemperaturc，thetensileslrengthdeclinedre们比arkably，andtheductlhtyenhanced.W】lentheadditonofCNTs、vcrel.ZWt%，thetensilestrengthandtheductil妙re朗hedthemaximu，Whlchis23一科%助d379%morethanthevalueofthem

7、a廿ixrespectively.T七ele把ilestrengthofcomPOsitesin150℃让mperaturewasmuchhigher1hanthestrengthin200℃忱mperature.CNTsAbstractcouldnotonlyrefinethegrainsofthecomPosites，butalsooverlapthegrainsandbeartheloadofresistancetodeformation.Aithestaeofhightemperature，CNTscouldrestrainthe