第48卷第6期Vol.48No.6FORGING&STAMPINGTECHNOLOGY2023年6月Jun20231Cr10Co6MoVNbN航空用不锈钢的热变形行为白青青1,2,胡进3,刘庭耀1,2,王婀娜1,2,宋令玺1,2(1.成都先进金属材料产业技术研究院股份有限公司,四川成都610303;2.海洋装备用金属材料及其应用国家重点实验室,辽宁鞍山114009;3.攀钢集团江油长城特殊钢有限公司,四川江油621700)摘要:采用Gleeble-3500热模拟实验机,研究了1Cr10Co6MoVNbN不锈钢在温度为800~1100℃、应变速率为0.01~10s-1下的热变形行为,得到了其应力-应变曲线,并构建了本构方程,分析了温度、应变速率和变形量对其微观组织的影响。结果表明:在热变形过程中,峰值应变会随着变形温度的降低或应变速率的增大而增大,不锈钢发生了动态再结晶,温度对动态再结晶的显微组织影响明显;在应变速率为1s-1时,再结晶体积分数及晶粒尺寸最小;在低应变速率下变形时,再结晶组织容易出现混晶。通过θ-σ曲线确定了其临界应力与峰值应力、临界应变与峰值应变的关系。关键词:1Cr10Co6MoVNbN不锈钢;热变形;本构方程;再结晶;临界应力;临界应变DOI:10.13330/j.issn.1000-3940.2023.06.032中图分类号:TG142.73文献标志码:A文章编号:1000-3940(2023)06-0238-07Thermaldeformationbehaviorofaerospacestainlesssteel1Cr10Co6MoVNbNBaiQingqing1,2,HuJin3,LiuTingyao1,2,WangEnuo1,2,SongLingxi1,2(1.ChengduAdvancedMetalMaterialsIndustryTechnologyResearchInstituteCo.,Ltd.,Chengdu610303,China;2.StateKeyLaboratoryofMeatlMaterialforMarineEquipmentandApplication,Anshan114009,China;3.JiangyouChangchengSpecialSteelCo.Ltd.ofPangangGroup,Jiangyou621700,China)Abstract:Thethermaldeformationbehaviorof1Cr10Co6MoVNbNstainlesssteelunderthetemperatureof800-1100℃andthestrainrateof0.01-10s-1wasstudiedbythermalsimulationexperimentalmachineGleeble-3500,andthestress-straincurvewasobtained.Then,theconstitutiveequationwasconstructed,andtheinfluencesoftemperature,strainrateanddeformationamountonitsmicrostruc-turewereanalyzed.Theresultsshowthatduringthethermaldeformationprocess,thepeakstrainincreaseswiththedecreasingofdeform-ationtemperatureortheincreasingofstrainrate,thedynamicrecrystallizationoccurs,andthetemperaturehasobviousinfluenceonthemicrostructureofdynamicrecrystallization.Whenthestr...
