Li Hao, Chen Shuai-Feng, Zhang Shi-Hong, Xu Yong, Song Hong-Wu
Shi-changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China.
School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China.
Materials (Basel). 2022 Aug 15;15(16):5586. doi: 10.3390/ma15165586.
Titanium alloy sheets present inferior formability and severe springback in conventional forming processes at room temperature which greatly restrict their applications in complex-shaped components. In this paper, deformation characteristics and formability and springback behaviors of titanium alloy sheet at room temperature are systematically reviewed. Firstly, deformation characteristics of titanium alloys at room temperature are discussed, and formability improvement under high-rate forming and other methods are summarized, especially the impacting hydroforming developed by us. Then, the main advances in springback prediction and control are outlined, including the advanced constitutive models as well as the optimization of processing paths and parameters. More importantly, notable springback reduction is observed with high strain rate forming methods. Finally, potential investigation prospects for the precise forming of titanium alloy sheet in the future are suggested.
钛合金板材在室温下的传统成型工艺中表现出较差的成型性和严重的回弹，这极大地限制了它们在复杂形状零件中的应用。本文系统地综述了钛合金板材在室温下的变形特性、成型性和回弹行为。首先，讨论了钛合金在室温下的变形特性，总结了高速率成型等方法下的成型性改善情况，特别是我们开发的冲击液压成型。然后，概述了回弹预测和控制方面的主要进展，包括先进的本构模型以及加工路径和参数的优化。更重要的是，采用高应变速率成型方法可显著减少回弹。最后，提出了未来钛合金板材精密成型的潜在研究前景。
