晶界内耗的研究

36(2007)1http:*孔庆平蒋卫斌石云崔平方前锋(230031)..,..,,,,RecentstudiesofgrainboundaryinternalfrictionKONGQingPingJIANGWeiBinSHIYunCUIPingFANGQianFeng(KeyLaboratoryofMaterialsPhysics,InstituteofSolidStatePhysics,ChineseAcademyofSciences,Hefei230031,China)AbstractGrainboundaryinternalfrictionisaresearchfielddevelopedbytheChinesescientistGeTingSui(T.S.K).Previousinvestigationsweremainlyperformedwithpolycrystals,butrecentlywehavestudiedtheinternalfrictionofasingleboundarybyusingbicrystalswithdifferentmisorientations,andsomenewresultshavebeenobtained.Thesignificanceoftheseinvestigationsandotherrecentprogressarereviewed.Keywordsgrainboundary,internalfriction,bicrysta,lcoincidencesitelattice,couplingmode.l*(:10674136)2006-08-28.Emai:[e-mail]1引言.,..,.,15,15.,..,,(CSL).,.,[1,2].,..,(1/).,,.,.,.,(anelasticity),.,.,T,Arrhenius:=0exp(E/kT).(1)!59!http:(1)E,k,0.[2∀4],=1(=2f,f),=2f0exp(E/kTp)=1(2),.-,Tpf,(2).,.,.,.2多晶试样中的晶界内耗峰.1947Al[5],1.,,,[2∀4].,2.1Al,(),.,,,;,,,.,=1,2[2].,,,[2∀4,6∀15].,.,[2].(),,.(,),.,[2].3双晶试样中的晶界内耗峰Al(),.3,(1Hz),..,.#112∃#100∃Al,[16,17]..,!60!36(2007)1http:(a,b).,.,3[16,17]:(1).1.3∀1.4eV,,.(2)(CSL).1.65eV.CSL[18].,(correlatedmotion).(3)(CSL).CSL(=5)5%CSL&[18],2.0∀2.25eV..,,,.,.,..4耦合模型在晶界内耗中的应用,.,,[1],(),.[19],[20∀23].:,tc(~10-12s),C(t)tc:C(t)=exp(-t/),ttc(3)C(t)=exp[-(t/*)1-n],ttc(4),*,n(0∋n1),.ttc,,(3).ttc,,,(4).(~1Hz),tc.,(4).,,E=(1-n)E*,(5)E,E*.(4),(1/T)fn[24].,n.n=0,E*=E.n0,E*n[20∀23].,[24].:n0.25;CSL:n=0.35∀0.44;(CSL):n(0.5.,.!61!http:[25,26].,E*E.,.n)0.35.nE*(5),E.(1.0∗0.1eV).(CSL)...4#112∃#100∃Al,()()E!.4E!,.,,,..,.,,.5结束语,.,,.,,;.[1]SuttonAP,BalluffiRW.InterfacesinCrystallineMaterials.OxfordUniversityPress,1995[2].().:,2000[KeTS.FundamentalsofInternalFrictioninSolids.(RelaxationandStructureofGrainBoundaries).Beijing:SciencePress,2000(inChinese).][3].(:).:,1999[FengDetal.ThePhysicsofMetals(Vo.l3,MechanicalPropertiesofMetals).Beijing:SciencePress,1999(inChinese).][4]NowickAS,BerryBS.AnelasticRelaxationinCrystallineSolids.NewYork:AcademicPress,1972[5]KTS.Phys.Rev.,1947,71:533[6],,.,1966,22:647[WangYN,XuZR,HanYL.ActaPhysicaSinica,1966,22:647(inChinese)][7],.,1975,24:168[KongQP,ChangCC.ActaPhysicaSinica,1975,24:168(inChinese)][8],.,1987,36:855[KongQP,DaiY.ActaPhysicaSinica,1987,36:855(inChinese)][9]WangYN,ZhuJS.J.dePhysique,1981,42(C5):457[10]KongQP,DaiY.Phys.Sta.tSo.l(a),1990,118:431[11]CuiP,GuanXS,KTS.Scripta.Metal.lMater.,1991,25:2521[12]KTS,CuiP.Scripta.Metal.lMater.,1992,26:1487[13]CaiB,KongQP,CuiPetal.ScriptaMater.,2001,44:1043[14]KongQP,CaiB,GottsteinG.J.Mater.Sc.i,2001,36:5429[15]ShiY,CaiB,KongQPetal.J.Mater.Sc.i,2003,38:1895[16]ShiY,CuiP,KongQPetal.Phys.Rev.B,2005,71:060101(R)[17]JiangWB,CuiP,KongQPetal.Phys.Rev.B,2005,72:174118[18]PalumboG,AustKT.MaterialsInterface.Ed.WolfD,YipS.London:ChapmanandHal,l1992,190[19]NgaiKL,JonscherAK,WhiteCT.Nature,1979,277:185[20]NgaiKL,WangYN,MagalasLB.J.AlloysCompd.,1994,211/212:327[21]WangYN,GuM,SunLHetal.Phys.Rev.B,1994,50:3525[22]MagalasLB.SolidStatePhenomena,2003,89:1[23]WangXP,FangQF.Phys.Rev.B,2002,65:064304[24]ShiY,JiangWB,KongQPetal.Phys.Rev.B,2006,73:174101[25]StrogatzSH,MirolloRE,MatthewsPC.Phys.Rev.Let.t,1992,68:2730[26]TsangKY,NgaiKL.Phys.Rev.E,1996,54:R3067!62!