锻造工艺对Ti-6．5Al-1Mo-IV-2Zr合金大规格棒材的组织与性能的影响.pdf

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1、Availableonlineat、『I，1^n^f．sciencedirect．com一毋Transactionsof晦妒ScienceDirectNOlflferrousMetaLsSocietyofChinaELSEVIERPressTrans．NonferrousMet．Soc．China23(2013)2276—2282wwW．tnmsc．crlInfluenceofforgingprocessonmicrostructureandmechanicalpropertiesoflargesectionTi一6．5A1—1Mo—IV一2Zr

2、alloybarsDe．mingHUANG，Huai．1iuWANG，XinCHEN，YongCHEN，HuaGUO1．StateKeyLaboratoryofVanadiumandTitaniumResourcesComprehensiveUtilization，PangangGroupResearchInstituteCo．，Ltd．，Panzhihua617000，China；2．PangangGroupJiangyouChangchengSpecialSteelCo．，Ltd．，Jiangyou621700，ChinaReceived10

3、July2012；accepted23March2013Abstract：Themechanicalproperties．microstmctureandtensilefractureofTi-6．5A1-1Mo-1V一2Zrlargesectionbarsproducedbythreedifrentforgingprocesseswereinvestigated．TheresultsshowthatwhenbiUetforgingandfinishforgingwereconductedbymeansoffulleringathighandlo

4、wtemperatureof]?-region．respectively；themicrostructureofforgedbariscoarseWidmanstatenstructure；themechanica1properties，especiallythereductionofcross-sectionalarea，arepoor,andtheroomtemperaturetensilefracturepresentsabrittlefeature．whi1ebilletforgingwascarriedoutbyupset—fuller

5、ingathightemperatureofthefl-region，andfinishforgingwasproceededthroughfulleringat(&斗．region，themicrostructureofforgedbarwasaduplexstructure，thebarhasbettercomprehensivemechanicalproperties．andtheroomtemperaturetensilefracturerevealsaductilefeature．InordertoobtainqualifiedTi-6

6、．5Al-1Mo-1V一2Zralloybar．itisthekeythatas．castmicrostructureshouldbecompletelybrokenduringbilletforging．andtheforgingtemperatureanddeformationarealsowellcontrolleduponfinishingforging．Keywords：Ti-6．5A卜1Mo一1V-2Zr；bar；forging；microstructure；mechanicalpropertiesmicrostructureandp

7、ropertieswasinvestigated【6，7】．The1Intr0ductiOnhotdeformationbehaviorsatdifferenttemperaturesandstrainrateswerestudied『8-111．ThedynamicDuetoitshighspecificstrengthandgoodthermalglobularizationkineticsduringhotworkingofcolonystabiljtY,Ti-6．5A卜1Mo-1V-2Zralloyhasbeenwidelymicrost

8、ructurewasresearchedbyWUetal『12]．ZHUetusedinaircraftindustry．Itisane