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时间:2020-06-03
《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》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
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
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