Finite Element Simulation of Extrusion Process of ZK60 Magnesium Hollow Profile and Its Microstructure and Properties
GUO Lili1, YUAN Jingru1, WANG Jianqiang1, LI Yongbing2
1 Continuous Extrusion Engineering Research Center,Ministry of Education,School of Materials Science and Engineering,Dalian Jiaotong University,Dalian 116028,China 2 Beijing National Innovation Institute of Lightweight Ltd.,Beijing 100083,China
Abstract: In this study, finite element simulation on the extrusion process of the ZK60 magnesium hollow profile was carried out with the aid of HyperXtrude software, and the distributions of temperature, velocity, displacement and strain of the outlet profile were obtained accordingly. As can be observed in the simulation results, the outlet profile showed plane symmetric distribution in temperature and velocity. The temperature declined from the outlet to the extrusion cavity stage by stage. In light of the microstructural investigation, the average grain size of the ZK60 magnesium profile ranged from 8.9 μm to 23.1 μm. The grains on the top surface exhibits the largest mean size, and the smallest sized grains located in the bottom corner, which attributed to differences in the dynamic recrystallization fraction in the ZK60 magnesium alloy caused by the diversity in temperature, velocity, strain and stress in different parts of the profile. The (0002) basal textures of the profile presented 10—15° inclining to the extrusion direction (ED). There was a considerable difference between the top and lateral surface in pole intensity of (0002) texture, with 19.3 in the top surface and 6.9 in the lateral surface. The tensile strength of the profile was about 310 MPa. With regard to the elongation of the profile, the side surface held the highest value of 18.9%, while the top surface exhibited the lowest value of 13.4%. This could be explained by the distribution of the (0002) basal texture towards transverse direction (TD), which reduced the intensity of the basal texture. The low elongation of the top surface is resulted from the comprehensive effect of coarse grains, strong (0002) basal texture and secondary phase distribution.
郭丽丽, 苑菁茹, 汪建强, 李永兵. ZK60镁合金中空型材挤压成形的有限元模拟及组织和性能[J]. 材料导报, 2020, 34(2): 2072-2076.
GUO Lili, YUAN Jingru, WANG Jianqiang, LI Yongbing. Finite Element Simulation of Extrusion Process of ZK60 Magnesium Hollow Profile and Its Microstructure and Properties. Materials Reports, 2020, 34(2): 2072-2076.
Ding W J. Magnesium alloy science and technology, Science Press, China, 2007(in Chinese).丁文江. 镁合金科学与技术, 科学出版社, 2007.2 Xia X M, Xue K M, Li P, et al. Journal of Plasticity Engineering, 2017, 24(2), 105(in Chinese).夏显明, 薛克敏, 李萍,等. 塑性工程学报, 2017, 24(2), 105.3 Mordike B L, Ebert T. Materials Science and Engineering: A, 2001, 302(1), 37.4 Guo L, Fujita F. Journal of Magnesium and Alloys, 2015, 3(2), 95.5 Guo L L, Li Y B, Pei J Y. Forging Technology, 2015, 40(6), 138(in Chinese).郭丽丽, 李永兵, 裴久杨. 锻压技术, 2015, 40(6), 138.6 Yin X H. Research on design and technology of extrusion die for magne-sium alloy profile. Master’s Thesis, Hunan University, China, 2006(in Chinese).尹向红. 镁合金型材挤压模具设计与工艺研究. 硕士学位论文, 湖南大学, 2006.7 Zhang Z C, Duan Z S, Liu J J, et al. Hot Working Technology, 2018, 47(19), 192(in Chinese).张智超, 段昭帅, 刘佳佳,等. 热加工工艺, 2018, 47(19), 192.8 Guo L L, Li Y B, Zhang X S, et al. Journal of Plasticity Engineering, 2016, 23(5), 29(in Chinese).郭丽丽, 李永兵, 张晓嵩,等. 塑性工程学报, 2016, 23(5),29.9 Xi H X. Numerical simulation study on extrusion process of ZK60 magnesium alloy. Master’s Thesis, Harbin University of Science and Technology, China, 2009(in Chinese).席海霞. ZK60镁合金挤压过程数值模拟研究. 硕士学位论文, 哈尔滨理工大学, 2009.10 Li Q, Chen Z J, Wang X Y, et al. Journal of Plasticity Engineering, 2018, 25(3), 181(in Chinese).李奇, 陈忠家, 王雪英,等. 塑性工程学报, 2018, 25(3),181.11 Xue Y, Wu Y J, Yang Z H, et al. Materials Review B: Research Papers, 2017, 31(8), 55(in Chinese).薛勇, 吴耀金, 杨治辉,等. 材料导报:研究篇, 2017, 31(8), 55.12 Amir Hadadzadeh, Mary A Wells, Sugrib Kumar Shaha, et al. Journal of Alloys and Compounds, 2017, 25(702), 274.13 Guo L, Chen Z, Gao L. Materials Science & Engineering A, 2011, 528(29-30), 8537.14 Ryan N D, McQueen H J, Evangelista E. Materials Science and Engineering, 1986, 81, 259.15 Qin Y J, Pan Q L, He Y B, et al. Journal of Central South University, 2010, 41(5), 1774(in Chinese).覃银江, 潘清林, 何运斌,等. 中南大学学报, 2010, 41(5), 1774.16 He Y B, Pan Q L, Liu X Y, et al. Materials Science and Technology, 2011, 19(3), 1(in Chinese).何运斌, 潘清林, 刘晓艳,等. 材料科学与工艺, 2011, 19(3), 1.17 Pan F S, Han E H. High performance magnesium alloy and processing technology, Science Press, China, 2006(in Chinese).潘复生, 韩恩厚. 高性能镁合金及加工技术, 科学出版社, 2006.18 Huang X, Suzuki K, Chino Y, et al. Journal of Alloys and Compounds, 2015, 632, 94.19 Mishra S K, Tiwari S M, Carter J T, et al. Materials Science and Engineering: A, 2014, 599, 1.20 Zhang Y, Zhang Z M, Zhang X. Hot Working Technology, 2010, 39(6), 139(in Chinese).张义, 张治民, 张星. 热加工工艺, 2010, 39(6),139.21 Huang Z H, Qi W J, Xu J. Transactions of Nonferrous Metals Society of China, 2013, 23(9), 2568.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2020, Vol. 34 
