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1、J.Mater.Sci.Technol.,2010,26(1),69-74.NanocrystalModelforLiquidMetalsandAmorphousMetalsX.L.Tiany,C.W.Zhan,J.X.Hou,X.C.ChenandJ.J.SunKeyLaboratoryofLiquidStructureandHeredityofMaterials,MinistryofEducation,ShandongUniversity,Jinan250061,China[ManuscriptreceivedMarch9,2009,inrevisedformJuly9,2009
2、]Ananocrystalmodelforliquidmetalsandamorphousmetalshasbeendeveloped.Withthenanocrystalmodel,thebroadeningpeakpro¯les(BPPs)ofCu,Al,Al65Cu20Fe15alloy,Cu70Ni30alloyandFe50Si50alloyweregainedbybroadeningtheX-raydi®raction(XRD)peaksofacrystallattice.BycomparingtheBPPswiththeXRDintensitycurvesmeasure
3、dontheliquidmetals,itisfoundthattheBPPsarecloselyinagreementwiththeXRDintensitycurves,respectively,excepttheFe50Si50alloy.Therefore,thenanocrystalmodelcanbeusedtodetermineiftheatomicclusterstructureoftheliquidmetalissimilartothestructureofitscrystallattice.KEYWORDS:Liquidmetal;Atomiccluster;Str
4、ucture;Crystallattice1.Introductionstructureoftheliquidmetalsandthestructureofsomecrystalsorquasicrystals.ItisproposedthatSeveralmodelsforliquidmetalhavebeencon-theamorphoussolidprovidesasolidsnapshot"ofstructedtounderstandthestructureoftheliquidtheatomiccon¯gurationoftheliquidstate[9].Thismet
5、al,e:g:thehardsphereandtherandomclosepack-meansthatthemetalsinamorphousstatehavesim-ingmodels[1{4].Atomicclustermodels,suchastheilarstructuretometalsinliquidstateandtheXRD°oatingatomicclustermodelandquasi-polycrystalintensitycurvesofthetwostatesarethesame.Themodel,werealsoconstructed[5].Fordesc
6、ribingtheonlydi®erencebetweenthetwostructuresisthatthemeltingprocess,itisassumedthatthemeltiscom-atomsarestatic"inamorphousstateandmovable"posedofatomicclusterwithahexagonalstructure[8].inliquidstate.ItwasconsideredthatthestructuresoftheatomicDuringthepreparationofamorphousalloysbyclusterposs
7、esssomecrystallatticestructuresbasedmechanicalalloying(MA),XRDpeaksofthesam-ontheabovemodels.plesbecomebroaderandbroaderwiththeincreaseSomeexperimentshavebeencarriedouttoinves-ofmillingtime.Finally,theshapeofthedi®rac-tigatethestr
