基于CSP工艺冷轧薄板罩式退火过程中组织、微区取向演变

内蒙古科技大学硕士学位论文基于CSP工艺冷轧薄板罩式退火过程中组织、微区取向演变的研究姓名：马胜梅申请学位级别：硕士专业：材料加工工程指导教师：金自力200706101CSP(CompactStripProduction)CSPQuanta400HKLChannel5SPCC0.55mmr∆rSPCC0.55mmEBSDSPCC0.55mm{111}112{111}110{110}100{111}110{111}112{112}110SPCC0.55mm6T3r1.7∆r0.08CSP2ResearchofMicrostructureandmicrocosmicorientationdistributionincold-rollingsheetbasedonCSPduringbatchannealingAbstractInrecentyearsProductionlineofCSP(CompactStripProduction)developsrapidlyinourcountry,alongwithgoingintoproductionofCSPineachplace,itisimportantthatdevelopinghightailingmoreeconomicandsocialefficiency.Bymeansoftheopticalmicroscope,thescanningelectronmicroscope(Quanta400)andelectronbackscatterdiffraction(HKLChannel5),weobservatethetransformationofmicrostructureandtextureduringrecrystallizationincold-rollingsampleofSPCC0.55mm,weresearchtheeffectsofdifferenthotrollingmaterialontransformationofmicrostructureandtextureduringannealingincoldrolling,thedifferencetransformationbetweensurfaceandcenterinthesideofrollingdirectionduringrecrystallization,andtheeffectsofdifferentannealtechnologyonthevaluerthevalue∆randsoon.Theresultsshowedthat:therecrystallizationoccursearlierinsurfacethanincenterduringannealinginSPCC0.55mmcold-rollingsample,butthisdifferencehasnoeffectonthegrowingofrecrystalgrainasannealinggoesby,therecrystallizationisthetheoryofformingcrystaldirectional.Bymicrocosmicorientationdistributionanalysewefindthatthetexture{111}110and{110}100occursfromcold-rollingtexture{111}112,thetexture{111}112occursfromcold-rollingtexture{111}110inbaotousteelSPCC0.55mmcold-rollingsampleduringtheformationstageofrecrystalgrainsinannealing,thetexture{112}110occursingroingstageofrecrystalgrains.ThemechanicsperformanceexperimentshowsthatwhenthefirststeptemperatureisT3,thevaluerishighest(1.7),thevalue∆rislowest(0.08)in6annealtechnics.Whenthehot-rollingstructureisdifferent,thefurthercold-rollingmicrocosmictropismisdifferent,buttheyhavesameforingruleofrecrystallizationgrains.Themechanicsperformanceexperimentshowsthatwecancontrolthedeep-drawingperformanceifwecouldcontrolthefirststeptemperatureindoublestepsannealing.KeyWordsCSP,texture,anneal,recrystallization_________________________________________________________-1-()CSPSMSSIMENSLOICSP[1]CSP290CSP198194.511.220mm9801560mm()CSP()“”(CSP)28140SMS54015SPCC0.55mm-2-11.1CSPCSP20801989CSP30400011%CSP[1]50%CN[2]1.2CSPCSPCSP→→→1100[3]CSPCSPCSP150nm;-3-20-100nm[3]CSP45%950[4]1.319185925mm1887150mm2030193819401420mm19601700mm20701700mm19882030mm3510004040[5]2006557.21200584.5%1748.1355.5%1314.5753.1%1290.4149%()1398.4543.6%1999200612133500-4-1.4CSP1-11-2[6]1-1CSP58520373382F1-F667381216944460000-5-1-3[1]1-2CSP210t210t100tF1F6-6-1-31.5//rn/--7-1.5.1r[7]r=ε/εNri=εi/εN(1-1)εεN1-4[5]r0r45r90rε0º45º90ºmrmrmr=(0r+245r+90r)/4(1-2)∆r=0r+90r245r(1-3)rm∆r∆rr∆r1-4r1.5.2=σs/σbσs――MPa-8-σb――MPa≤0.65σs[8]1.5.3n[9]r(3)nm=(n0+2n45+n90)/4(1-4)1.61.6.11924F——X1948B.FXM.FieldM.E.MerchantL.G.X1952G.BL.KM.H.1965H.JJ1.6.2-9-()()()[10]1.6.3()[7]UVWuvw{hkl}uvw{hkl}uvw{hkl}uvw{hkl}uvw1965(Roe)(Bunge)OABCOABCEuler{ψθφ}g1-5[11]g={ψθφ}0≤ψφ≤2π0≤θ≤π-10-f(g)=f(ψθφ)gψθφ1-6{hkl}uvw{hkl}uvw{hkl}uvw(ψθφ)[7]h=sinφsinθk=cosφsinθl=cosθu=cosψcosφ-sinψsinφcosθv=-cosψsinφ-sinψcosφcosθw=sinψsinθ1-5Euler{ψθφ}1-62φψπ2πθ-11-f(g)0º5º1-11-1{hkl}uvwφ1φφ2{001}1000°0°0°{001}11045°0°0°{112}11190°35°45°{011}21135°45°0°{011}1000°45°0°S{123}63459°37°63°R{124}21157°29°63°{236}38579°31°33°{025}1000°22°0°{111}11290°55°45°R{111}1100°55°45°1.6.41-7Bunge-12-1-7αγαODFφ1=0ºφ=0-90ºφ2=45º{001}110{112}110{111}110γODFφ1=0-90ºφ=54.7ºφ2=45º{111}110{111}112IF{554}225φ1=0-90ºφ=61ºφ2=45º{111}112ηODFφ1=0ºφ=0-90ºφ2=0º{001}100{110}100ζODFφ1=0-90ºφ=45ºφ2=0º{110}100{110}110θ{001}ODFφ1=0ºφ=0ºφ2=0-90º{001}100{001}110φ1ηφ2φεγαθζα110RDγ111NDη001RDζ110NDθ001NDε110TD-13-ε110ODFφ1=90ºφ=0-90ºφ2=45º{001}110{111}112{554}225{110}001αγηζθεODFφ2=45º[1213]1-8φ2=45ºODF1-8φ2=45ºODF{001}110{112}110{111}112{111}110{111}110{112}110{111}110{110}110{111}110{001}110{001}110{110}001(){111}112{554}225{111}112φ2=45ºφ1εγαφ{001}110-14-1.6.5{111}{100}rr{111}111111{111}100{100}100{100}r{111}γγαγ[12]αγ{001}110{111}110110RD{111}110{111}112111ND≤70%αγ{111}21170%α{112}110γ{111}011{001}110{111}211[14]AlN{111}ALN{001}{111}ALN{001}{110}IF{111}IF{111}110{111}112IF{111}-15-{111}112{110}IF0.2%C-Mn[15][14]αHAGBshigh-anglegrainbundariesαγ1.6.6rm[16]rm{111}{111}{100}rmI{111}/I{001}rm(1-9)r1-9rm{111}/{001}()()1-21-3[17]1.0101001000.42.41.62.01.20.82.8I{111}/I{001}-16-1-2{001}110{001}100{112}110{111}110{111}112{554}225{110}001{110}110rm{001}[18,19,20]∆r0∆r0{111}rm{554}225{111}112{111}112{110}90ºθ=45ºr0r90r45r[21]1-3{110}001r1-3rmrrmr{111}1102.620.01{111}1122.620.01{554}2252.611.09{112}1102.072.69{001}1000.410.75{110}0015.048.95-17-1.7rAlAlNrr70%80%90%()111{111}1.7.1800900500700[22]Ar3α-γ{110}001{110}112ζ{4411}11118{112}111ε{001}11