锻压技术

新型B路径的等通道转角挤压工艺

英文标题：Equal channel angular pressing process with new route B

作者：高建烨何涛杜向阳孙安娜洪浩洋

单位：上海工程技术大学

关键词：等通道转角挤压 2024铝合金等效应变变形路径 Deform-3D

分类号：TG146.21

出版年,卷(期):页码：2020,45(10):92-98

摘要：

通过Deform-3D有限元软件，对一种新型B路径下的2024铝合金进行等通道转角挤压数值模拟。分析了等效应变大小及其分布规律，得到新型B路径下铝合金的变形特点。利用等通道转角挤压实验，验证了2024铝合金在新型B路径下变形模拟的可信性。结果表明：多道次等通道转角挤压后，新型B路径下的变形效果剧烈并且变形更均匀，试件均匀变形区扩大，头部、尾部也得到了充分变形；由于各方向上等效应变梯度的变化，等效应变均匀性随着道次的增加呈现出先上升、后下降的趋势。通过实验与仿真结果的对比发现，由于头部与主变形区的等效应变值接近，头部不会产生明显的翘曲。

The equal channel angular pressing process of 2024 aluminum alloy with new route B was numerical simulated by finite element software Deform-3D, and the equivalent strain and its distribution law were analyzed to obtain the deformation characteristics of aluminum alloy under new route B. Then, the accuracy of deformation simulation for 2024 aluminum alloy with new route B was verified by equal channel angular pressing experiment. The results show that after multi-pass equal channel angular pressing, the deformation effect under new route B is severe and more uniform, the main deformation area of specimen is enlarged, and the head area and tail area deform fully. Due to the change of equivalent strain gradient in all directions, the uniform of equivalent strain increases firstly and then decreases with the increasing of passes. By comparing the experimental and the simulation results, the head does not warp because of the similar equivalent strain between the head and the main deformation areas.

基金项目：

国家重点研发项目（2018YFB1307900）；国家自然科学基金资助项目（51805314）；上海市科委重点攻关资助项目（16030501200）

高建烨（1995-），男，硕士研究生 E-mail：gjy19950325@163.com 通讯作者：何涛（1979-），男，博士，副教授 E-mail：hetao@sues.edu.cn

参考文献：

［1］Segal V M, Reznikov V, Drobyshevskiy A. Plastic working of metals by simple shear
［J］. Russian Metallurgy:Metally,1981, 1: 99.

［2］Semenova I P, Valiev R Z, Langdon T G. Chapter 1-Highpressure Torsion and Equalchannel Angular Pressing
［M］. Amsterdam: Elsevier, 2019.

［3］任伟杰，林金保. 大塑性变形技术在工业领域的应用研究进展
［J］. 材料导报, 2015, 29(7): 89-94.

Ren W J, Lin J B. Industrial application of severe plastic deformation technology
［J］. Materials Review, 2015, 29(7): 89-94

［4］吴跃，陈文琳，杨栋. 等通道转角挤压7075铝合金动态再结晶组织晶粒度预报
［J］. 塑性工程学报, 2014, 21(6): 96-101.

Wu Y, Chen W L, Yang D. Prediction of dynamic recrystallized grain size of 7075 aluminum alloy prepared by equal channel angular pressing
［J］. Journal of Plasticity Engineering, 2014, 21(6): 96-101.

[5］左治江，张宇辉，文亮. 等径角挤压力分析及实验研究
［J］. 锻压技术, 2018, 43(3): 160-165.

Zuo Z J, Zhang Y H, Wen L. Extrusion force analysis and experiment research on equal channel angular
［J］.Forging & Stamping Technology, 2018, 43(3): 160-165.

［6］章震威，王军丽，张清龙，等. 等通道转角挤压制备超细晶材料的研究与发展
［J］. 材料导报, 2017, 31(1): 116-125.

Zhang Z W, Wang J L, Zhang Q L, et al. Producing ultrafinegrained materials by equal channel angular pressing:A review
［J］. Materials Review, 2017, 31(1): 116-125.

［7］Furukawa M, Iwahashi Y, Horita Z, et al. The shearing characteristics associated with equalchannel angular pressing
［J］. Materials Science and Engineering: A, 1998, 257(2): 328-332.

［8］滕步刚，李丙，陈冠希，等. 挤压温度及路径对MgGdY-ZnZr合金等通道角挤压组织及性能影响
［J］. 塑性工程学报, 2019, 26(2): 28-36.

Teng B G, Li B, Chen G X, et al. Effect of extrusion temperature and route on microstructure and mehcnical properties of MgGdY-ZnZ alloy by equal channel angular pressing
［J］. Journal of Plasticity Engineering, 2019, 26(2): 28-36.

［9］孙安娜，何涛，霍元明，等. 不同路径下等通道转角挤压变形规律研究
［J］. 塑性工程学报, 2019, 26(6): 16-21.

Sun A N, He T, Huo Y M, et al. Study on deformation law of equal channel angular pressing under different paths
［J］. Journal of Plasticity Engineering, 2019, 26(6): 16-21.

［10］丁文文，李涛，吴何畏. 等径角挤压道次对7075铝合金组织和腐蚀性能的影响
［J］. 锻压技术,2019, 44(9): 146-151.

Ding W W, Li T, Wu H W. Influence of equalchannel angular pressing pass on microstructure and corrosion properties for 7075 aluminum alloy
［J］. Forging & Stamping Technology,2019, 44(9): 146-151.

［11］张金龙，赵西成，吕振林，等. 变形路径对ECAP变形影响的有限元分析
［J］. 塑性工程学报, 2016, 23(4): 6-12.

Zhang J L, Zhao X C, Lyu Z L, et al. Finite element analysis of deformation route effect on ECAP deformation
［J］. Journal of Plasticity Engineering, 2016, 23(4): 6-12.

［12］张会，王同乐，王玉梅，等. 等通道挤压对2A12铝合金组织性能的影响
［J］. 热加工工艺,2014, 43(11): 106-108.

Zhang H, Wang T L, Wang Y M, et al. Effects of equal channel angular pressing on microstructure and properties of 2A12 aluminum alloy
［J］. Hot Working Technology,2014, 43(11): 106-108.

［13］Liang W, Bian L, Xie G, et al. Transformation matrix analysis on the shear characteristics in multipass ECAP processing and predictive design of new ECAP routes
［J］. Materials Science and Engineering: A, 2010, 527(21): 5557-5564.

［14］边丽萍，梁伟，马建，等. 改进型ECAP路径对AlMg2Si原位复合材料组织与力学性能的影响
［J］. 中国有色金属学报, 2011, 21(8): 1841-1846.

Bian L P, Liang W, Ma J, et al. Effect of modified ECAP route on microstructure and mechanical property of AlMg2Si insitu composit
［J］. The Chinese Journal of Nonferrous Metals, 2011, 21(8): 1841-1846.

［15］Iwahashi Y, Wang J, Horita Z, et al. Principle of equalchannel angular pressing for the processing of ultrafine grained materials
［J］. Scripta Materialia, 1996, 35(2): 143-146.

［16］Patil Basavaraj V, Chakkingal U, Prasanna Kumar T S. Study of channel angle influence on material flow and strain inhomogeneity in equal channel angular pressing using 3D finite element simulation
［J］. Journal of Materials Processing Technology, 2009, 209(1): 89-95.

［17］Xu S, Zhao G, Ren G, et al. Numerical simulation and experimental investigation of pure copper deformation behavior for equal channel angular pressing/extrusion process
［J］. Computational Materials Science, 2008, 44(2): 247-252.

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