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《微量添加Fe元素對(duì)CuZrAl塊體金屬玻璃的結(jié)構(gòu)和力學(xué)性能的影響.pdf》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在應(yīng)用文檔-天天文庫(kù)。
1、TransaefionsofNonferrousMetals愛Avai：la三bleo，nSlinecaitewwnwc．secieDnceidrierect．ctomSocietyofChinaTrans．NonferrousMet．Soc．China22(2012)1123—1126www．tnmsc．CnEffectofminor-additionofFeonstructuralandmechanicalpropertiesofCuZrA1bulkmetallicglassxuHong．wei’。，DUYu．1eiI_，DE
2、NGYu。1．EngineeringResearchCenterofMaterialsBehaviorandDesignofMinistryofEducation，SchoolofMaterialsScienceandEngineering，NanjingUniversityofScienceandTechnology,Nanjing210094，China；2．JiangsuInstituteofAdvancedMaterials，Danyang212300，China；3．NationalLaboratoryofSolidSt
3、ateMicrostructuresandCenterforMaterialsAnalysis，NanjingUniversity,Nanjing210093，ChinaReceived19September2011；accepted12January2012Abstract：TheCuZrAlbulkmetallicglasswithminor-additionofFewaspreparedbyrapidquenchingmethod．ThestructureswereexaminedbyX—raydifraction(XRD)
4、．TheefectofFeontheglass-formingabilitywasstudiedbydiferentialscanningcalorimetry(DSC)．Theminor．a(chǎn)dditionofFeobviouslyextendsthesupercooledliquidregionATx．TheplasticstrainoftheCu44Zr4sA17Febulkmetallicglassisabout1．5％．Themicrostructureswereexaminedbytransmissionelectron
5、microscopy(TEM)．Itisfoundthatwhen1％一2％Fe(molefraction)wereintroducedintotheCuZrA1alloymatrix，nanoscalephaseseparationoccursintheas—preparedCu44Zr48A17Febulkmetallicglass．Keywords：bulkmetallicglass；microstructure；mechanicalproperty；phaseseparation；Feadditionshearbands，
6、andobviousimprovementoftheplasticity．1IntroductionInthepresentwork，Cu44Zr48A17FeBMGwasprepared，theefectsofFeontheGFAandplasticitywerestudied，Itiswellknownthatbulkmetallicglasses(BMGs)andthemicrostructureswereexaminedbyTEM．exhibituniquemechanicalproperties，suchashighst
7、rengthandelasticlimit．excellentcorrosionresistance2Experimental[1，2]，butlimitedroomtemperatureplasticity【3]．ItwasreportedthattheroomtemperatureplasticityofBMGsAlloyingotswithnominalcompositionofcanbeimprovedbyintroducingdendriticandsphericalCu44Zr48AI7Fewerepreparedfr
8、omelementalmetalsbcccrystallinephase[4，5]，nano—sizedcrystallinephase(purity>99．9％、byarc—meltingunderaTigetteredAr[6]intothea
