Constitutive.pdf

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1、ConstitutiveModelingofDynamicRecrystallizationKineticsandProcessingMapsofSolutionandAgingFGH96SuperalloyLongfeiNie,LiwenZhang,ZhiZhu&WeiXuJournalofMaterialsEngineeringandPerformanceISSN1059-9495Volume22Number12J.ofMateriEngandPerform(2013)22:3728-3734DOI10.1007/

2、s11665-013-0699-4123YourarticleisprotectedbycopyrightandallrightsareheldexclusivelybyASMInternational.Thise-offprintisforpersonaluseonlyandshallnotbeself-archivedinelectronicrepositories.Ifyouwishtoself-archiveyourarticle,pleaseusetheacceptedmanuscriptversionfor

3、postingonyourownwebsite.Youmayfurtherdeposittheacceptedmanuscriptversioninanyrepository,provideditisonlymadepubliclyavailable12monthsafterofficialpublicationorlaterandprovidedacknowledgementisgiventotheoriginalsourceofpublicationandalinkisinsertedtothepublisheda

4、rticleonSpringer'swebsite.Thelinkmustbeaccompaniedbythefollowingtext:"Thefinalpublicationisavailableatlink.springer.com”.123Author'spersonalcopyJMEPEG(2013)22:3728–3734ÓASMInternationalDOI:10.1007/s11665-013-0699-41059-9495/$19.00ConstitutiveModelingofDynamicRec

5、rystallizationKineticsandProcessingMapsofSolutionandAgingFGH96SuperalloyLongfeiNie,LiwenZhang,ZhiZhu,andWeiXu(SubmittedJanuary8,2013;inrevisedformMay12,2013;publishedonlineSeptember19,2013)ThehotdeformationbehaviorofsolutionandagingFGH96superalloywereinvestigate

6、dinthedeformationtemperaturerangeof1000-1175°Candstrainraterangeof0.001-5.0/sonaGleeble-1500thermo-mechanicalsimulator.Theresultsshowthatthetruestress-straincurvesaretypicaloftheoccurrenceofdynamicrecrystallization(DRX).Thevalueoftheactivationenergyandmaterialsc

7、onstantsofAandnwasobtainedthroughthehyperbolicsinefunctionbetweenthepeakstressandZener-Hollomonparameter.OpticalmicroscopyobservationsofthegrainsshowedthatZener-HollomonparameteraffectedtheDRXgrainsizeobviously.Inaddition,theconstitutiveequationsandDRXkineticsmo

8、delwerealsobuilt.Theprocessingmapswiththestrainof0.3and0.6wereobtainedonthebasisofdynamicmaterialsmodel.Theresultspredictedthatthereexistedinstabilityregionsataround1