喷砂处理铝合金表面形貌及残余应力分析

20104134Apr．2010Vol．13No．415[1]。。[2-5]。22.1DB-1300.7MPa5083250mm×120mm×60mm。15°30mm。POLYVARJSM-6490LVSEI。2.2RigakuD/MAX2500XCuKαMPA。Sin2ψ。33.11。918721024425083。、SEMX。。TQ639.1A1007－9548201004－0041－04SubsurfaceDeformationandResidualStressinAluminumAlloysSubjectedToAl2O3-ParticlesImpactingLINHong-ji,MENGXian-lin,ZHANGHai-yongAbstractInthisresearch,anexperimenthasbeenconductedtoassesstheeffectsofAl2O3-particlesejectingto5083aluminumalloyssamples.Thesurfaceandcross-sectionofthesampleswerestudiedbyscanningelectronmicroscopySEMandEDAXenergydispersiveanalysisofX-rayanalysis.Residualstressofthe5083aluminumalloysurfaceisalsostudiedbyXRD.Theresultsindicatedthatthesurfaceroughnesswasincreasedbyparticlesejecting,andthemicro-crackinthesurfaceduringtheprocesswasremoved,thedistributionuniformityofcompressiveresidualstressinthesurfacewasincreased.Keyword:aluminumalloy,surfaceroughness,residualstress.4120104134Apr．2010Vol．13No．4。1ab3μmcd10μm。3.22。[6]W=γS-γl+γLγS———γl———γL———。γS＞γL。[7]。2c。d。3.33。3。310μm“”“”[8]。。3.49X。4、50mm×16mm。mmm!#$%&’()*+,-/1%&’(0*+’12345a!b#$%&’()*+;c!d,-#$.%&’()*+abcd!2#$%&’()*+,-./01×50×200×1000EDS←←×50×200×1000030000000000000000a4220104134Apr．2010Vol．13No．4。3.4.15。5-94.6MPa[9]。-200～20MPa6。。3.4.27。00.10.20.30.40.5015253545!#-369.7MPa1.02.03.04.05.0!$/10-3Sin%2×24680050-50-100-150-200-250!#$/MPa%&’(6)*+,-./012!#$341357900.10.20.30.40.51.52.53.54.55.5015253545!#-356.1MPa!$/10-3Sin%2××××××××××××××××××××××××××××××××××!#××$%××××××××/×××××××××××××××××××××××××××××××!#×××××××!$××××××%×/×××××××××××××××××××××××××××××××!#××××××!$××××××%×/×××××××××××××××××××××××××××××××!#××××××!$××××××%×/×××××××××××××××××××××××××××××××!#××××××××$×!%×××/×××××××××××××××××××××××××××××××!#×××××××!$××××××%×/×××××××××××××××××××××××××××××××!#×××××××××$×!%×××/×××××××××××××××××××××××××××××××!#××××××××××$×!%×××/×××××××××××××××××××××××××××××××!#×××××××!$××××××%×/××5×××××××××××××××+-4320104134Apr．2010Vol．13No．47-361.2MPa[8-9]。-380～-340MPa8。。4⑴。⑵。[1].[M]..[2].[J].199726617.[3]GundersenR.andNisanciogtuK.Designofaluminiumstruc－tures[J].CORROSION1990:Vol46,No4:279-285.[4]ChristianKnutsen.AluminiumAppliedforStructuresPossi－bilitiesandChallenges,ProceedingsoftheEleventhinterna－tionalOffshoreandPolarEngineerConference[D].2001,Sta－vanger,Norway,June:17-22.[5]AfsethAetal.Influ-enceofheattreatmentandsurfacecon－ditioningonfiliformcorrosionofaluminiumalloysAA3005andAA5754[J].CorrosionScience,2001,43(12):2359-2377.[6]SearlesJL,etal.Stresscorrosioncrac-kingofsensitizedAA5083(Al-4.5Mg-1.0Mn)[J].MaterialsScienceForum,2002:396-402.[7]AbalieA,etal.Sanchex-AMayaJM.InfluenceofthedegreeofpolishingofalloyAA5083onitsbehaviouragainstlocalisedalkalinecorrosion[J].CorrosionScience,2004:1909-1920.[8]TbrinksmeierE,EckebrechtJ.Residualstress-measurementandcausesinmachiningprocesses[J],InternationalInstitutionforProductionEngineeringResearch,1982,31(1):491-509[9]LeeyY,etal.Effectofannealingtemperatureonmicrostruc－turesandmechanicalpropertiesofa5083Alalloydeformedatcryogenictemperature[J].ScriptaMaterialia,2004,51(4):355-359.———————————————————2009-08-0700.10.20.30.40.51.52.53.54.55.5015253545!#-360.4MPa!$/10-3Sin%2×!7#$%&’()*+,-./012300.10.20.30.40.51.02.03.04.05.0015253545!#-374.4MPaSin$2!%/10-3×××××××××××××××××××××××××××××××!#×××××××!$××××××%××××××××××××××××××××××××××××××××!#×××××××!$××××××%××××××××××××××××××××××××××××××××!#××××××××××$×!%××××××××××××××××××××××××××××××××××!#×××××××!$××××××%××××××××××××××××××××××××××××××××!#×××××××!$××××××%××××××××××××××!#$%×××)*+,-./0123!#$45×&’(××××44