| 摘要: |
| 虚拟塑性加工通过在数字空间构建构件加工全过程的数字孪生体，可以实现构件形状尺寸、微观组织和力学性能的仿真，为塑性加工工艺的设计提供了一种高效的方法。针对多相金属间化合物成形与控性一体化的难题，基于有限元软件和自主开发的组织-性能预测工具箱建立了一套全流程虚拟加工系统，实现了塑性加工全流程的模拟和构件形状尺寸、组织和力学性能的预测。设计了具有特定形状尺寸、微观组织和性能要求的Ti2AlNb合金矩形截面件胀-压复合热态气压成形及后续热处理工艺，一次成形实验生产出满足要求的构件。 |
| 关键词: Ti2AlNb合金 虚拟塑性加工 胀-压复合热态气压成形工艺 全流程模拟 组织性能预测 |
| 基金项目:黑龙江头雁计划项目（HITTY-20190015） |
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| A Virtual Plasticity Forming System for Thin-wall Components of Ti2AlNb Alloy |
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Liu Zhiqiang1, Zhu Shiqiang2, Zhao Jie1, Jiao Xueyan3, Wang Dongjun1, Wu Yong4, Liu Gang1
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1. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001;2.4. Capital Aerospace Machinery Co., Ltd., Beijing 100076;3.2. College of Naval architecture and Marine Engineering, Shandong Jiaotong University, Weihai 264310;4.3. College of Mechanical& Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016
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| Abstract: |
| Virtual plasticity forming can simulate the shape, microstructure and mechanical properties of components by constructing the digital twin in digital space, which provides an efficient method for the design of processing. In order to solve the problem of the integration of forming and controlling of mechanical properties of multiphase intermetallic components, a virtual plasticity forming system of whole process was established based on the finite element software and the self-developed prediction toolbox of microstructure and mechanical properties, which realized the simulation of the whole process of metal plastics forming and the prediction of shape, microstructure and mechanical properties of formed components.Process parameters design of hot gas forming-pressing compound-forming process and subsequent heat treatment of a rectangular section component of Ti2AlNb alloy with specific shape, microstructure and mechanical properties requirements was realized. Then, the components that meet the requirements was produced by one experiment. |
| Key words: Ti2AlNb alloy virtual plasticity forming hot gas forming-pressing compound-forming process simulation of whole process prediction of microstructure and mechanical properties |
