(1. 沈陽航空航天大學 航空航天工程學部，沈陽 110136;
2. 北京動力機械研究所，北京 100074;
3. 哈爾濱工業(yè)大學 材料科學與工程學院，哈爾濱 150001)
摘 要: 針對復雜形狀TA2鈦合金半管件室溫成形困難，進行黏性介質(zhì)壓力成形研究，制定零件的成形工藝方案，并采用有限元軟件ANSYS/LS-DYNA對其成形過程進行分析，得到黏性介質(zhì)壓力分布和黏性附著力對坯料流動規(guī)律、變形均勻性和成形試件壁厚分布及回彈的影響規(guī)律。在此基礎(chǔ)上，進行復雜形狀TA2鈦合金半管件黏性介質(zhì)壓力成形試驗，驗證有限元分析結(jié)果的準確性。結(jié)果表明:室溫條件下利用黏性介質(zhì)自身性能特點，可以實現(xiàn)復雜形狀TA2鈦合金半管件的精準成形。
關(guān)鍵字: 鈦合金半管件;黏性介質(zhì)性能;成形;壁厚分布;回彈
（1. Faculty of Aerospace Engineering, Shenyang Aerospace University, Shenyang 110136, China;
2. Beijing Power Machinery Research Institute, Beijing 100074, China;
3. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China）
Abstract:According to the forming difficulty of complex shape TA2 titanium alloy semi-pipe parts at room temperature, the viscous pressure forming was researched and the part process scheme was formulated correspondingly. The finite element software ANSYS/LS-DYNA was used to analyze the forming process. The influences of the viscous pressure distribution and the viscous adhesive stress on the flowing law and deformation uniformity of the blank, the specimen thickness distribution and the springback are obtained. On this basis, the viscous pressure forming of the complex shape TA2 titanium alloy semi-pipe parts were carried out to verify the accuracy of the finite element analysis results. The results show that the accuracy forming of the complex shape TA2 titanium alloy semi-pipe parts can be realized at room temperature by using the performance characteristic of viscous medium.
Key words: titanium alloy semi-pipe part; viscous medium property; forming; thickness distribution; springback
