王森,李恒,张海芹,等.高强TA18钛管数控弯曲织构演变数值模拟[J].精密成形工程,2017,9(1):53-58.
WANG Sen,LI Heng,ZHANG Hai-qin,et al.Texture Evolution Prediction of High Strength TA18 Titanium Alloy Tube in Bending[J].Journal of Netshape Forming Engineering,2017,9(1):53-58. |
| 高强TA18钛管数控弯曲织构演变数值模拟 |
| Texture Evolution Prediction of High Strength TA18 Titanium Alloy Tube in Bending |
| 投稿时间：2016-12-13 修订日期：2017-01-10 |
| DOI：10.3969/j.issn.1674-6457.2017.01.009 |
| 中文关键词: 高强TA18钛管 弯曲成形 织构演变 有限元 VPSC |
| 英文关键词: high strength TA18 titanium alloy tube bending texture evolution finite element VPSC |
| 基金项目:国家自然科学基金（51275415）；国家优秀青年科学基金（51522509） |
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| 中文摘要: |
| 目的 获得高强TA18钛管数控弯曲过程的织构演变规律。方法 基于高强TA18钛管数控弯曲三维弹塑性显式有限元模型以及耦合粘塑性自洽晶体塑性模型（VPSC），获得钛管数控弯曲过程中的织构演变规律，通过单向拉伸、压缩和数控弯曲实验与EBSD分析验证了织构演变预测的可靠性。结果 高强TA18钛管数控弯曲过程中，弯曲角度为0°~90°时，弯曲后管材内外侧均形成径向织构与轴向织构。结论 高强TA18钛管的初始织构为近径向织构，在数控弯曲过程中，随弯曲角度增大，管材内侧轴向织构逐渐增多，径向织构先减小后增大；管材外侧的周向织构与轴向织构都逐渐增加；实验对比分析表明，预测的织构变化趋势和实验结果基本一致。 |
| 英文摘要: |
| To obtain texture evolution of high strength TA18 titanium tube (HSTT) in the rotary draw bending. The texture evolution of HSTT in rotary draw bending was obtained by combing the 3D-FE explicit simulation and viscoplastic self-consistent (VPSC) crystal plasticity, and the reliability of the prediction results was verified by the bending experiments and EBSD analysis. The texture evolution rules at the extrados and intrados of bent tubes were obtained along the bending angels of 0°~90°. During rotary draw bending, at the intrados of tubes, the axial texture increased and radial texture decreased first and then increased; And at the intrados of tubes, the circumferential texture and axial texture increased; The texture evolution of simulation agrees with the experimental results. |
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