镁合金板形件扭-挤成形载荷的主应力法求解模型

doi:10.3901/JME.2021.04.073

机械工程学报 ›› 2021, Vol. 57 ›› Issue (4): 73-82.doi: 10.3901/JME.2021.04.073

扫码分享

镁合金板形件扭-挤成形载荷的主应力法求解模型

徐宁宁^1,2, 孙朝阳^1,2, 钱凌云^1,2, 倪克志^1,2, 蔡旺^1,2

1. 北京科技大学机械工程学院北京 100083;
2. 金属轻量化成形制造北京市重点实验室北京 100083

收稿日期:2020-07-25 修回日期:2020-10-25 出版日期:2021-02-20 发布日期:2021-04-28
通讯作者: 孙朝阳(通信作者),男,1976年出生,博士,教授,博士研究生导师。主要研究方向为材料多尺度力学行为、塑性加工理论及应用、难变形合金热挤压理论及应用、轻量化成形制造。E-mail:suncy@ustb.edu.cn
作者简介:徐宁宁,男,1995年出生。主要研究方向为塑性加工理论及应用。E-mail:1351793545@qq.com
基金资助:
北京市自然科学基金（3182025）、教育部联合基金（6141A020221）、NSAF联合基金（U1730121）和中央高校基本科研业务费（FRF-BD-19-003A，FRF-GF-19-003A）资助项目。

Solution Model of Principal Stress Method for Torsion-extrusion Forming Load of Magnesium Alloy Plate

XU Ningning^1,2, SUN Chaoyang^1,2, QIAN Lingyun^1,2, NI Kezhi^1,2, CAI Wang^1,2

1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083;
2. Beijing Key Laboratory of Lightweight Metal Forming, Beijing 100083

Received:2020-07-25 Revised:2020-10-25 Online:2021-02-20 Published:2021-04-28

摘要/Abstract

摘要： 结合挤压工艺和高压扭转工艺的优势提出一种扭-挤成形工艺新方法及开发了模拟装置，该工艺不仅能够保证成形，而且还能够有效的细化晶粒。通过分析扭-挤成形工艺金属流动和变形区特点，建立了镁合金扭-挤成形载荷的主应力法求解模型，该模型将变形区划分为四个区域，依次推导了不考虑扭转和考虑扭转成形载荷的求解模型，剪切屈服强度考虑温度和应变速率的效应。通过与成形试验的载荷对比，模型计算结果与试验的结果误差在8%以内。采用该模型分析了不同参数对成形载荷的影响，结果表明随着扭转轴转速的增加，不仅坯料剪切变形增加，且成形载荷减小；成形载荷随坯料半径的增加而增加，随坯料高度的增加呈线性增加，随板件宽度的增加而减小，随板件高度的增加先骤减后平缓减小，且坯料半径和板件高度对成形载荷影响显著。

关键词: 扭-挤成形, 金属流动, 主应力法, 成形载荷

Abstract: A new torsion-extrusion forming process and the corresponding simulation device are proposed and designed through considering the advantages of extrusion and high-pressure torsion processes. The developed process is suitable for the forming of the sheet magnesium alloy and is beneficial to the microstructure refinement. Based on the characteristics of metal flow in the deformation zone of the torsion-extrusion process, the principal stress method to solve the model of the torsion-extrusion load is established for magnesium alloy. This model divides the deformation zone into four regions. The model without torsion and the one with torsion are derived sequentially, meanwhile, the shear yield strength depends on the effects of temperature and strain rate. By comparing with the experimental load, the error between the computed and the experimental results is less than 8%. The influence of different deformation parameters on the forming load is analyzed through this model. As the rotation speed of the torsion shaft is increased, the shear deformation of the billet is increased and the forming load is decreased. The forming load is increased with the radius and height of the billet. The load is decreased with the increase of the plate width, moreover, it is decreased sharply and then slowly with the increase of the plate height. Furthermore, the billet radius and the plate height have a significant influence on the forming load.

Key words: torsion-extrusion forming, characteristics of metal flow, principal stress method, forming load

中图分类号:

TG376

徐宁宁, 孙朝阳, 钱凌云, 倪克志, 蔡旺. 镁合金板形件扭-挤成形载荷的主应力法求解模型[J]. 机械工程学报, 2021, 57(4): 73-82.

XU Ningning, SUN Chaoyang, QIAN Lingyun, NI Kezhi, CAI Wang. Solution Model of Principal Stress Method for Torsion-extrusion Forming Load of Magnesium Alloy Plate[J]. Journal of Mechanical Engineering, 2021, 57(4): 73-82.

参考文献

[1] YANG Z,LI J P,ZHANG J X,et al. Review on research and development of magnesium alloys[J]. Acta Metallurgica Sinica,2008,21(5):313-328.
[2] 武传松,吕学奇,宿浩,等. 铝-镁异质合金搅拌摩擦焊接成形的研究进展[J]. 机械工程学报,2020,56(6):4-16. WU Chuansong,LÜ Xueqi,SU Hao,et al. Research progress in dissimilar friction stir welding of aluminium/magnesium alloys[J]. Journal of Mechanical Engineering,2020,56(6):4-16.
[3] 郑留伟,梁伟,赵子龙,等. 均匀化退火处理对AZ91镁合金热轧变形组织与力学性能的影响[J]. 稀有金属材料与工程,2016,45(5):1296-1301. ZHENG Liuwei,LIANG Wei,ZHAO Zilong,et al. Effect of homogenizing annealing treatment on hot-rolled microstructure and mechanical properties of AZ91 magnesium alloy[J]. Rare Metal Materials and Engineering,2016,45(5):1296-1301.
[4] 张婷婷,王文先,袁晓丹,等. Mg/Al合金爆炸焊连接及其界面接合机制[J]. 机械工程学报,2016,52(12):52-58. ZHANG Tingting,WANG Wenxian,YUAN Xiaodan,et al. Interface bonding mechanism of Mg/Al alloy explosive welded[J]. Journal of Mechanical Engineering,2016,52(12):52-58.
[5] 张晓华,姜巨福,罗守靖. AZ91D镁合金的热压缩变形行为[J]. 中国有色金属学报,2009,19(10):1720-1725. ZHANG Xiaohua,JIANG Jufu,LUO Shoujing. Compression deformation behavior of AZ91D magnesium alloy at elevated temperature[J]. The Chinese Journal of Nonferrous Metals,2009,19(10):1720-1725.
[6] 刘筱,朱必武,李落星,等. 挤压态AZ31镁合金热变形过程中的孪生和织构演变[J]. 中国有色金属学报,2016,26(2):288-295. LIU Xiao,ZHU Biwu,LI Luoxing,et al. Twinning and texture evolution in extruded AZ31 magnesium alloy during hot deformation[J]. The Chinese Journal of Nonferrous Metals,2016,26(2):288-295.
[7] 胡红军. 镁合金挤压-剪切变形行为的物理和数值模拟研究[J]. 稀有金属材料与工程,2013,42(5):957-961. HU Hongjun. Physical and numerical simulation of deformation behaviors of extrusion-shear for magnesium alloy[J]. Rare Metal Materials and Engineering,2013,42(5):957-961.
[8] SURESH M,SHARMA A,MORE A M,et al. Effect of equal channel angular pressing (ECAP) on the evolution of texture,microstructure and mechanical properties in the Al-Cu-Li alloy AA2195[J]. Journal of Alloys and Compounds,2019,785:972-983.
[9] ZHANG L,WANG Q D,LIAO W J,et al. Effects of cyclic extrusion and compression on the microstructure and mechanical properties of AZ91D magnesium composites reinforced by SiC nanoparticles[J]. Materials Characterization,2017,126:17-27.
[10] ALSUBAIE S A,BAZARNIK P,LEWANDOWSKA M,et al. Evolution of microstructure and hardness in an AZ80 magnesium alloy processed by high-pressure torsion[J]. Journal of Materials Research and Technology,2016,5(2):152-158.
[11] NIE K B,WANG X J,DENG K K,et al. Microstructures and mechanical properties of AZ91 magnesium alloy processed by multidirectional forging under decreasing temperature conditions[J]. Journal of Alloys and Compounds,2014,617:979-987.
[12] WATANABE H,MUKAI T,ISHIKAWA K,et al. Low temperature superplasticity of a fine-grained ZK60 magnesium alloy processed by equal-channel-angular extrusion[J]. Scripta Materialia,2002,46(12):851-856.
[13] 郭强,严红革,陈振华,等. 多向锻造工艺对AZ80镁合金显微组织和力学性能的影响[J]. 金属学报,2006,42(7):739-744. GUO Qiang,YAN Hongge,CHEN Zhenhua,et al. Effects of multiple forging process on microstructure and mechanical properties of magnesium alloy AZ80[J]. Acta Metallurgica Sinica,2006,42(7):739-744.
[14] DAS M,DAS G,GHOSH M,et al. Microstructures and mechanical properties of HPT processed 6063 Al alloy[J]. Materials Science & Engineering A,2012,558:525-532.
[15] HU H J,ZHANG D F,PAN F S. Die structure optimization of equal channel angular extrusion for AZ31 magnesium alloy based on finite element method[J]. Transactions of Nonferrous Metals Society of China,2010,20(2):259-266.
[16] RAHIMI F,EIVANI A R,KIANI M. Effect of die design parameters on the deformation behavior in pure shear extrusion[J]. Materials & Design,2015,83(15):144-153.
[17] PRIEL E,UNGARISH Z,NAVI N U. Co-extrusion of a Mg/Al composite billet:A computational study validated by experiments[J]. Journal of Materials Processing Technology,2016,236:103-113.
[18] ZHOU W,LIN J,DEAN T A,et al. Analysis and modelling of a novel process for extruding curved metal alloy profiles[J]. International Journal of Mechanical Sciences,2018,138-139:524-536.
[19] 胡忠举,刘雁峰,卢立伟,等. 镁合金正挤压-弯曲剪切复合连续变形工艺及挤压力计算[J]. 中国有色金属学报,2018,28(5):923-930. HU Zhongju,LIU Yanfeng,LU Liwei,et al. Continuous deformation technology and extrusion load calculation of Mg alloys fabricated by direct extrusion and bending shear deformation[J]. Transactions of Nonferrous Metals Society of China,2018,28(5):923-930.
[20] 刘乾坤,赵鹏,吴定雨,等. 基于主应力法对六面顶压机密封边受力的分析[J]. 超硬材料工程,2019,31(6):16-18. LIU Qiankun,ZHAO Peng,WU Dingyu,et al. The analysis of the force on the sealing edge of cubic anvil high-pressure apparatus based on the principal stress method[J]. Superhard Material Engineering,2019,31(6):16-18.
[21] 曾超,田威,刘向尧,等. 航空铆接压力成形钉头材料流动及尺寸研究[J]. 锻压技术,2019,44(10):176-183. ZENG Chao,TIAN Wei,LIU Xiangyao,et al. Research on material flow and dimension of aviation nail head by viveting pressure forming[J]. Forging and Stamping Technology,2019,44(10):176-183.
[22] CAI Y,SUN C Y,WANG W R,et al. An isothermal forming process with multi-stage variable speed for magnesium component assisted by sensitivity analysis[J]. Materials Science & Engineering A,2018,729:9-20.
[23] 孙朝阳,徐宁宁,钱凌云,等. 一种高性能构件扭-挤成形的装置:中国,202010006334.5[P]. 2020-05-19. SUN Chaoyang,XU Ningning,QIAN Lingyun,et al. A device for torsion-extrusion forming of high-performance components:China,202010006334.5[P]. 2020-05-19.
[24] CAI Y,WAN L,GUO Z H,et al. Hot deformation characteristics of AZ80 magnesium alloy:Work hardening effect and processing parameter sensitivities[J]. Materials Science & Engineering A,2017,687:113-122.

镁合金板形件扭-挤成形载荷的主应力法求解模型

Solution Model of Principal Stress Method for Torsion-extrusion Forming Load of Magnesium Alloy Plate

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 6

编辑推荐

Metrics

本文评价

[1]	田野, 薛克敏, 孙大智, 李萍, 宋群超. 涡旋盘背压成形工艺研究[J]. 机械工程学报, 2015, 51(16): 143-149.
[2]	王仲仁;张琦. 省力成形系列谈一模锻省力的原理与途径[J]. , 2013, 49(18): 92-98.
[3]	李峰;苑世剑;刘钢. 罗德系数的一点推广及应用[J]. , 2009, 45(5): 45-48.
[4]	周杰;刘敏;王平;魏发亮;张平;何健. 汽车曲轴终锻模阻力墙新型结构参数试验[J]. , 2007, 43(8): 229-234.
[5]	张吉;何祝斌;苑世剑. 轴对称塑性变形区内一点流动方向的探索[J]. , 2007, 43(12): 74-77.
[6]	夏琴香;张赛军;梁佰祥;任晓龙;阮锋. 三维非轴对称偏心类管件旋压成形时的变形力分析[J]. , 2005, 41(10): 200-204.