Finite Element Simulation of the Forming Process of TC4 Titanium Alloy Y-shaped Rotational Die Forgings

Author of the article:CHU Yudong1,2,3, GAO Wenqiang1,3, WU Tiandong2 , ZHANG Lijun2

Author's Workplace：1. Innovation Center NPU Chongqing, Chongqing 401135, China; 2. Xi'an Supercrystal Technology Co., Ltd., Xi'an 710299, China; 3. Sanhang Advanced Materials Research Institute Co., Ltd., Chongqing 401135, China

Key Words：TC4 titanium alloy; die forging; finite element simulation; process optimization

Abstract：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 successfully 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 forgings.