热等静压态FGH96合金的热压缩变形行为和微观组织演化（英文）.pdf

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1、Availableonlineatwww~sciencedirect．comTransactionsof·：三，ScienceDirectNonferrousMetalsSocietyofChinaPress1’rans．NonferrousMet．Soc．China22(2012、66—71WWW．tnmsc．cnHotcompressivedeformationbehaviorandmicrostructureevolutionofHIPedFGH96superalloyxuWei，ZHANGLi—wen，GUSen—dong，ZHANGJian-linSchoo

2、lofMaterialsScienceandEngineering，DalianUniversityofTechnology,Dalian116024，ChinaReceived12January2011；accepted23July2011Abstract：HotdeformmionbehaviorandmicrostructureevolutionofhotisostaticallypressedFGH96P／IVIsuperalloywerestudiedusingisothermalcompressiontests．Thetestswereperformedo

3、naGleeble-1500simulatorinatemperaturerangeOf1000-l150。Candstrainrateof0．001-1．0s～，respectively~Byregressionanalysisofthestress-straindata，theconstitutiveequationforFGH96superalloywasdevelopedintheformofhyperbolicsinefunctionwithhotactivationenergyof693．21kJ／mo1．Byinvestigatingthedeforma

4、tionmicrostructure．itisfoundthatpartialandfulldynamicalrecrystallizationoccursinspecimensdeformedbelowandabove1100。C，respectively,anddynamicalrecrystallization(DRX)happensmorereadilywithdecreasingstrainrateandincreasingdeformationtemperature．Finally,equationsrepresentingthekineticsOfDRX

5、andgrainsizeevolutionwereestablished．Kevwords：FGH96superalloy；hotcompressivedeformation；constitutiveequation；microstructureevolution；dynamicalrecrystallizationfewkineticsofdynamicrecrystallizationforHIPed1Intr0ducti0nFGH96wasgiven．Hence．morestudiesarestillneeded．Inthepresentwork。asetofc

6、ompressiontestswereFGH96isakindofnickle．basedP／Msuperalloyperformedinthetemperaturerangeofl000-1150。Cdesignedbytheprincipleofdamagetolerance[1，2】．nisandstrainrateof0．001-1．0s～．Fromtheexperimentalmainlyusedintheconstructionofturbinedisksbecauseresult，hotdeformationbehaviorandmicrostructu

7、reofitsexcellentpropertiesatelevatedtemperature，suchevolutionforHIPedFGH96superalloyweremodeled，asgoodtensileandcreepproperties，goodcrackwhichcangiveindispensableinformationfornumericalresistanceandmicrostructurestabilityupto700。Cf3，41．simulationandoptimizingtheactualhotworking