航空学报 > 2014, Vol. 35 Issue (11): 3145-3155   doi: 10.7527/S1000-6893.2014.0018

TA15钛合金环件径轴向辗轧成形全过程组织演变模拟

朱帅1,2, 杨合1, 郭良刚1,2, 邸伟佳1, 凡玉1   

  1. 1. 西北工业大学 凝固技术国家重点实验室, 陕西 西安 710072;
    2. 重庆理工大学 汽车零部件先进制造技术教育部重点实验室, 重庆 400054
  • 收稿日期:2014-01-02 修回日期:2014-03-10 出版日期:2014-11-25 发布日期:2014-03-18
  • 通讯作者: 杨合,Tel.: 029-88495632 E-mail: yanghe@nwpu.edu.cn E-mail:yanghe@nwpu.edu.cn
  • 作者简介:朱帅 男, 博士研究生.主要研究方向: 钛合金环件精确辗轧过程的数值模拟. E-mail: zhushuai330@163.com; 杨合 男, 博士, 教授, 博士生导师, 长江学者, 国家杰出青年基金获得者.主要研究方向: 精确塑性成形先进理论与技术. Tel: 029-88495632 E-mail: yanghe@nwpu.edu.cn; 郭良刚 男, 博士, 副教授, 硕士生导师.主要研究方向: 环件辗轧、 挤压等精确塑性成形过程的理论与技术及其建模仿真优化. Tel: 029-88460212-807 E-mail: glgglg66@nwpu.edu.cn
  • 基金资助:

    国家自然科学基金(51175427, 51135007);金属挤压与锻造装备技术国家重点实验室(中国重型机械研究院有限公司)开放基金(2011MEFETKF_03);重庆理工大学汽车零部件先进制造技术教育部重点实验室2013年度开放基金; 国家科技重大专项(2010ZX04004-131-07); 华中科技大学材料成形与模具技术国家重点实验室开放课题研究基金(P2014-05); 高等学校学科创新引智计划(B08040)

Simulation of Microstructure Evolution During the Whole Process of Radial-axial Rolling of TA15 Titanium Alloy Ring

ZHU Shuai1,2, YANG He1, GUO Lianggang1,2, DI Weijia1, FAN Yu1   

  1. 1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an 710072, China;
    2. Key Laboratory of Advanced Manufacturing Technology for Automobile Parts, Ministry of Education, Chongqing University of Technology, Chongqing 400054, China
  • Received:2014-01-02 Revised:2014-03-10 Online:2014-11-25 Published:2014-03-18
  • Supported by:

    National Natural Science Foundation of China (51175427, 51135007); Fund of the State Key Laboratory of Metal Extrusion and Forging Equipment Technology (China National Heavy Machinery Research Institute Co.,Ltd.) (2011MEFETKF_03); Open Fund of the Key Laboratory of Advanced Manufacturing Technology for Automobile Parts, Ministry of Education, Chongqing University of Technology; National Science and Technology Major Project (2010ZX04004-131-07); Open Fund of the State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong University of Science and Technology (P2014-05); 111 Project (B08040)

摘要:

钛合金环件径轴向辗轧成形制造全过程通常包含加热环坯转移、辗轧成形及轧制环件冷却3个阶段,而每个阶段都将对最终环件的微观组织产生重要影响.因此,研究阐明钛合金材料在该成形制造全过程的微观组织演变特征与规律,对控制环件最终的组织和性能至关重要.以TA15钛合金环件径轴向辗轧为研究对象,首先阐明了TA15钛合金在上述各阶段的微观组织演变机制与演变模型,进而基于ABAQUS软件平台,建立了TA15钛合金环件径轴向辗轧成形制造全过程的宏微观耦合有限元(FE)模型.通过大量模拟研究表明:加热环坯转移阶段促使初生α相的体积分数增加,晶粒尺寸略微增大;辗轧成形阶段一定程度上细化了初生α相晶粒尺寸,而对初生α相体积分数影响不明显;轧制环件冷却阶段会使初生α相体积分数明显增加,晶粒尺寸增大.

关键词: 环件径轴向辗轧, 钛合金, 微观组织, 全过程, 有限元模拟

Abstract:

The complete process of the radial-axial rolling of a titanium alloy ring usually includes three operations, namely, the transferring of the heated ring blank from the furnace to the ring rolling mill, the rolling of the heated ring blank, and the cooling of the rolled ring. Each operation can influence strongly the microstructure of the final ring. Therefore, it is important to reveal the characteristics and laws of microstructure evolution of the ring during the whole process of the radial-axial ring rolling for controlling the microstructure and quality of the final ring. Aiming at the whole process of radial-axial rolling of the TA15 titanium alloy ring, the mechanisms and models of microstructure evolution in each operation are clarified first. Then, under ABAQUS environment, a coupled macro-micro and through-process finite element (FE) model of radial-axial ring rolling of TA15 titanium alloy is developed. Extensive simulation results show that: the volume fraction of primary alpha shows an obvious increase but the grain size increases slightly in the transferring operation of the heated ring blank; the grain size of primary α is refined but the volume fraction does not exhibit obvious changes during the rolling operation of the heated ring blank; and both the volume fraction and grain size of primary α increase distinctly in the cooling operation of the rolled ring.

Key words: radial-axial ring rolling, titanium alloys, microstructure, whole process, finite element modeling

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