铁磁材料表面硬度无损测量方法的研究

(,100044)(,100081):,,:;;;:TG115.28:A:100026656(2001)0320093203RESEARCHONNONDESTRUCTIVETESTINGOFTHESURFACEHARDNESSOFFERROMAGNETICMATERIALLIQiang(CollegeofMechanicalandElectricEngineering,NorthernJiaotongUniversity,Beijing100044,China)LIUXue-wen(Metal&ChemistryInstitute,ChinaAcademiaofRailwaysScience,Beijing100081,China)Abstract:TherelationshipbetweenthesurfacehardnessofferromagneticmaterialandtheintensityofBarkhausennoisewasstudied.ExperimentalresultshowedthattheintensityofBarkhausennoiseincreasedwiththedecreasingofsurfacehardness.ItwasconcludedthatthesurfacehardnessofferromagneticmaterialcouldbemeasuredbyBarkhausennoiseintensity.Keywords:Ferromagneticmaterial;Hardnessmeasurement;Heattreatment;Microscopicstructure,,,,,,,,,,,,,:1999209214:(59605003)[13],,,,142CrMo,1,Rs=635MPa,Rb=830MPa,D=16%,W=54%30mm6mm300mm,860,200,400,5006508h,ASTSTRESSCAN500C,MAGN=40,0.07mm3923320013NDTVol.23No.3Mar.2001©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.1%C0.417P0.023Cr0.875Si0.195S0.032Mo0.150Mn0.514Ni0.092Cu0.055,STRESSCAN500CMP,MP[4,5]MP=KuKu2,,42CrMo860,1,2,3,,,,,123,,A2Fe,,(),,,,,E,,A,A2Fe,,,4,5,6MP,A2Fe,,,,,,,MP,A2Fe,,A2Fe,449:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.56MP,,,,,,,MP,MP,,,,,,3(1)(2),,,(3),:[1]KittelC,CaltJK.Ferromagneticdomaintheory.SolidStatePhysics[M].NewYork:AcademicPress,1956.437-564.[2]PasleyRL.Barkhauseneffectanindicationofstress[J].MaterialsEvaluation,1970,28(2):157.[3]HillR,GengRS,CowkingA,etal.TheeffectofnickelhardnessandgrainsizeonacousticandelectromagneticBarkhausenemission[J].NDT&EInternational,1991,24(4):179-186.[4]SaynajakangasS.Anon2destructiveelectromagneticmethodforstructuralstudiesofferrousalloy[D].Finland:UniversityofOulu,1973.[5]TiittoK.UseofBarkhauseneffectintestingforresidualstressandmaterialdefect[J].NondestructiveTestingAustralia,1989,26(2):36-41.2001UT,RT,MT,PTET(Ê)(É):2001312():100:UT,RT,ET20;MT,PT15():UT,RT,ET1200ö;MT,PT1000ö:,,,,,():100:200437::[phone]:[phone]:2001(Ë),59:©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.