精品文档---下载后可任意编辑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。本文主要讨论 TC4 钛合金的电塑性拉拔变形行为及机理。采纳电塑性拉拔实验，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。同时采纳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。讨论结果表明，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:Titanium alloy TC4 has been widely used in aerospace, aviation, automobile and other fields because of its excellent comprehensive performance. This paper mainly studies the electrical plasticity drawing behavior and mechanism of TC4 titanium alloy. The electric plastic drawing was used to analyze the influence of factors such as drawing speed, drawing temperature and spreading ratio on the mechanical properties, deformation behavior and fracture morphology of the material. Meanwhile, microscopic observations and scanning electron microscopy were used to explore the changes in the microstructure, grain morphology, and texture evolution of the material. The research results show that TC4 titanium alloy exhibits excellent tensile properties and deformation plasticity under electric plastic drawing conditions, and has obvious texture evolution characteristics under certain conditions. In addition, the factors affecting the electrical plastic deformation of materials mainly include the material's own organizational structure, drawing speed, drawing temperature, spreading ratio and other factors.Keywords: TC4 titanium alloy; electric plasticity; drawing deformation; texture evolution; deformation mechanism
