TC4钛合金电塑性拉拔变形行为及机理的开题报告摘要：钛合金TC4因具有良好的综合性能，在航空、航天、汽车等领域得到了广泛应用。本文主要研究TC4钛合金的电塑性拉拔变形行为及机理。采用电塑性拉拔实验，分析了拉伸速率、拉伸温度、铺张比等因素对材料的力学性能、变形行为、断裂形貌的影响。同时采用显微组织观察和扫描电镜等手段，探究了材料的微观结构、晶粒形貌、织构演化等方面的变化。研究结果表明，TC4钛合金在电塑性拉拔条件下表现出良好的拉伸性能和变形可塑性，在一定条件下具有明显的织构演化特征。此外，影响材料电塑性变形的因素主要包括材料本身的组织结构、拉伸速率、拉伸温度、铺张比等多种因素。关键词：TC4钛合金；电塑性；拉拔变形；织构演化；变形机理Abstract:TitaniumalloyTC4hasbeenwidelyusedinaerospace,aviation,automobileandotherfieldsbecauseofitsexcellentcomprehensiveperformance.ThispapermainlystudiestheelectricalplasticitydrawingbehaviorandmechanismofTC4titaniumalloy.Theelectricplasticdrawingwasusedtoanalyzetheinfluenceoffactorssuchasdrawingspeed,drawingtemperatureandspreadingratioonthemechanicalproperties,deformationbehaviorandfracturemorphologyofthematerial.Meanwhile,microscopicobservationsandscanningelectronmicroscopywereusedtoexplorethechangesinthemicrostructure,grainmorphology,andtextureevolutionofthematerial.TheresearchresultsshowthatTC4titaniumalloyexhibitsexcellenttensilepropertiesanddeformationplasticityunderelectricplasticdrawingconditions,andhasobvioustextureevolutioncharacteristicsundercertainconditions.Inaddition,thefactorsaffectingtheelectricalplasticdeformationofmaterialsmainlyincludethematerial'sownorganizationalstructure,drawingspeed,drawingtemperature,spreadingratioandotherfactors.Keywords:TC4titaniumalloy;electricplasticity;drawingdeformation;textureevolution;deformationmechanism