基于选择形核和选择生长理论的铝板再结晶织构形成机制-论文.pdf

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1、Availableonlineatwww．sciencedirect．comTransactionsof赣：ScienceDirectNonferrousMetals爱SocietyofChinaELs1三VIERPressTrans．NonferrousMet．Soc．China24(2014)1635—1644www．tnmsc．cnFormationmechanismsofrecrystallizationtexturesinaluminumsheetsbasedontheoriesoforientednucleationandorientedgrowthWei—minMAO

2、，PingYANGDepartmentofMaterials，StateKeyLaboratoryforAdvancedMetalsandMaterials，UniversityofScienceandTechnologyBeijing，Beijing100083，ChinaReceived13June2013；accepted8October2013Abstract：Therecrystallizatioi1texturesin95％rolledaluminumsheetswithdiferentpuritiesandinitialtextureswereinvestigated

3、．Theeffectsofrecoverylevelsandthedraggingefectsinducedbyimpuritiesontheefectivedrivingforceandcorrespondingbehaviorsoforientednucleationandorientedgrowthduringannealingwereanalyzed．Theorientednucleationisacommonbehaviorintheinitialstageofprimaryrecrystallizationiftheeffectivedrivingforceindefo

4、rmedmatrixisnottoohightoreducethenecessityofnucleationperiod．Orientedgrowthmighta口pearifthetemperatureisnottoohighandthegrains，ofwhichthemisorientationtomatrixisabout40。(111)，haveenoughtimeandspacetoexpandgrowthadvantages，whilecertainreductionofefectivedrivingforceisalsonecessary．Therecrystall

5、izationtexturescouldbechangedbycontrollinginitialtexturesandefectivedrivingforceswhichcanberegulatedbyrecoverylevelsanddraggingefects．Keywords：aluminum；recrystallization；texture；recovery；storedenergy：boundarymigration40。<1l1>rotation．1IntroductionItisknownaswel1．thatsomerecrystallizedgrainshav

6、estrongernucleationadvantageandnucleatemoreItisknownthatgrainboundarymobilityinfrequentlyduringannealing．ThesenucleishouldfoI'ITIaluminumismisorientationdependent，andthevelocitysomewhereintransitionbands[8]bymeansofstrongofboundarymigrationcouldreachthemaximalvalueifrecoveryandpolygonizationpr

7、ocessesofcertainthemisorientationbetweentwoneighboringgrainsissubstructureindeformedmatrix．Thesubstructurewithcharacterizedbyarotationaround(111)axisabout40。，cubeorientationindicatesstrongrecoveryabilityandi．e．40。(111)rotation．Thephenom