摘要
钛合金比强度高、耐腐蚀、生物相容性好,在航空航天、海洋工程等领域获得标志性应用。但是,由于钛合金提炼和加工成本高,限制其使用范围。通过数值仿真技术优化加工过程,缩短零件的试制周期,提高零件的材料利用率,对发展精密成形技术具有重要意义。本文对TC4钛合金Y型回转体模锻件的锻造成形进行了有限元模拟,得到成形过程中金属的充填流动规律,以及坯料上温度场、应力场和应变场的分布规律。根据模拟结果对模具设计和成形方式进行了优化,采用两步模锻的方案成功制备出该模锻件,且有限元模拟结果与实际模锻结果基本相符,对钛合金Y型回转体模锻件的成形具有指导作用。
Titanium alloys have been used in aerospace,ocean engineering and other fields by the advantages of high specific strength,corrosion resistance and good biocompatibility.However,due to the high cost of titanium alloy during refining and processing,its further application is limited.It is of great significance to optimize the forming process,shorten the trial production cycle of parts,improve the material utilization rate of parts and develop precision forming technology through numerical simulation.The forging process of the TC4 titanium alloy Y-shaped rotational die forging was simulated by the finite element method.The filling flow of metal and the distribution of the temperature field,stress field and strain field on the blank during the forming process were obtained.According to the results of finite element simulation,the die design and forming method are optimized.Based on this,two-step die forging is adopted to successfiilly prepare the die forging,and the finite element simulation results are basically consistent with the actual die forging results.It can be seen that the combination of numerical simulation and process experiment can play an active role in guiding the forming of titanium alloy Y-shaped rotational die fbrgings.
作者
楚玉东
高文强
吴天栋
张利军
CHU Yudong;GAO Wenqiang;WU Tiandong;ZHANG Lijun(Innovation Center NPU Chongqing,Chongqing 401135,China;Xi'an Supercrystal Technology Co.,Ltd.,Xi*an 710299,China;Sanhang Advanced Materials Research Institute Co.,Ltd.,Chongqing 401135,China)
出处
《铸造技术》
CAS
2023年第3期240-245,共6页
Foundry Technology
基金
西安市2020年博士后创新基地资助项目(2020-10)
重庆市高端研发机构项目(5110190001)。
关键词
TC4钛合金
模锻
有限元模拟
工艺优化
TC4 titanium alloy
die forging
finite element simulation
process optimization
作者简介
楚玉东,1985年生,博士,工程师.研究方向:先进钛基合金材料及其精密热加工技术.电话:15029046461,Email:cyder-019@163.com。
