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1、JournalofAlloysandCompounds550(2013)438–445ContentslistsavailableatSciVerseScienceDirectJournalofAlloysandCompoundsjournalhomepage:www.elsevier.com/locate/jalcomHotdeformationandprocessingmapofatypicalAl–Zn–Mg–Cualloya,b,⇑a,ba,ba,bY.C.Lin,Lei-TingLi,Yu-ChiXia,Yu-QiangJiangaSch
2、oolofMechanicalandElectricalEngineering,CentralSouthUniversity,Changsha410083,ChinabStateKeyLaboratoryofHighPerformanceComplexManufacturing,Changsha410083,ChinaarticleinfoabstractArticlehistory:Thehigh-temperatureflowbehaviorof7075aluminumalloywasstudiedbyhotcompressivetests.Ba
3、sedReceived2August2012ontheexperimentaldata,theefficienciesofpowerdissipationandinstabilityparameterwereevaluated.Receivedinrevisedform1October2012Processingmapswereconstructedbysuperimposingtheinstabilitymapoverthepowerdissipationmap.Accepted22October2012Microstructuralevoluti
4、onof7075aluminumalloyduringthehotcompressionwasanalyzedtocorrelateAvailableonline2November2012withtheprocessingmaps.Itcanbefoundthattheflowstressesincreasewiththeincreaseofstrainrateorthedecreaseofdeformationtemperature.Thehigh-angleboundariesandcoarseprecipitationsdistrib-Keyw
5、ords:utinginthegraininterior/boundaries,whichmayresultinthedeepinter-granularcorrosionandlargeMetalsandalloysareasofdenudationlayer,shouldbeavoidedinthefinalproducts.TheoptimumhotworkingdomainMicrostructure1Processingmapisthetemperaturerangeof623–723Kandstrainraterangeof0.001–
6、0.05s.Ó2012ElsevierB.V.Allrightsreserved.1.Introductiondeformationbehaviorof410martensiticand2205austenite–ferriteduplexstainlesssteelsusingconstitutiveequationsandDuringhotformingprocess,theeffectsofstrainrateanddefor-processingmaps.Ramanathanetal.[30]developedtheprocessingma
7、tiontemperatureonthemechanicalpropertiesofmetalsandal-mapforAl/SiCpcomposite,andtherelationshipbetweenmicro-loysaresignificant.Generally,thereareseveraltypesofstructureandhotworkabilitywereinvestigatedthroughmicro-metallurgicalphenomenaduringthehotdeformation,suchasthestructura
8、lobservations.Samantarayetal.[31]studiedthedynamicrecrystalli
