超细晶镁合金电流辅助微拉伸变形行为研究

doi:10.3901/JME.2022.16.068

机械工程学报 ›› 2022, Vol. 58 ›› Issue (16): 68-76.doi: 10.3901/JME.2022.16.068

• 特邀专栏: 高性能塑性成形制造(上) • 上一篇下一篇

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超细晶镁合金电流辅助微拉伸变形行为研究

虞钧^1,2, 陈万吉^1,2, 徐杰^1,2, 单德彬^1,2, 郭斌^1,2

1. 哈尔滨工业大学微系统与微结构制造教育部重点实验室哈尔滨 150080;
2. 哈尔滨工业大学材料科学与工程学院哈尔滨 150001

收稿日期:2021-12-28 修回日期:2022-06-06 出版日期:2022-08-20 发布日期:2022-11-03
通讯作者: 徐杰(通信作者)，男，1980年出生，博士，教授，博士研究生导师。主要研究方向为微纳成形理论与工艺。E-mail：xjhit@hit.edu.cn
作者简介:虞钧，男，1996年出生，博士研究生。主要研究方向为超细晶镁合金的微成形。E-mail：21b909086@stu.hit.edu.cn
基金资助:
国家自然科学基金资助项目(51375111，51475124)

Deformation Behavior of Electrically-assisted Micro-tension in Ultrafine-grained Magnesium Alloy

YU Jun^1,2, CHEN Wanji^1,2, XU Jie^1,2, SHAN Debin^1,2, GUO Bin^1,2

1. Key Laboratory of Microsystems and Microstructures Manufacturing of Ministry of Education, Harbin Institute of Technology, Harbin 150080;
2. School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001

Received:2021-12-28 Revised:2022-06-06 Online:2022-08-20 Published:2022-11-03

摘要/Abstract

摘要： 针对传统粗晶镁合金材料塑性差、成形精度低的问题，提出了超细晶镁合金电流辅助微成形新方法。利用高压扭转技术制备了平均晶粒尺寸约110 nm的超细晶AZ31镁合金，分别对粗晶和超细晶镁合金材料进行了电流辅助微拉伸变形行为研究，发现电流辅助下材料的流动应力明显降低，且相同条件下超细晶镁合金的抗拉强度较低，而伸长率较高。粗晶试样和超细晶试样的断口形貌明显不同，粗晶镁合金的变形不均匀，韧性断裂后产生局部熔断；超细晶镁合金变形均匀，从试样外表面形成裂纹后产生整体熔断。在此基础上，绘制了超细晶镁合金电流辅助微成形热加工图，结果表明，超细晶镁合金功率耗散效率更高，成形性能明显优于粗晶镁合金。

关键词: 微成形, 电致塑性, 超细晶, 高压扭转, 镁合金

Abstract: Aiming at the problems of poor plasticity and low forming accuracy of traditional coarse-grained magnesium alloy materials, a novel electrically-assisted (EA) micro-forming method is proposed using ultrafine-grained (UFG) magnesium alloy. The UFG magnesium alloy with an average grain size of ~110 nm were prepared using high-pressure torsion (HPT). The deformation behavior of electrically-assisted micro-tension using coarse-grained (CG) and UFG samples were studied respectively. The results indicate that the flow stress of both CG and UFG magnesium alloy decreases obviously when applying currents. Compared with CG magnesium alloy, the UFG magnesium alloy exhibits lower tensile strength and higher elongation under the same conditions. The results of fracture morphology observation show that there are obvious differences between CG and UFG magnesium alloy. The deformation of the CG magnesium alloy is uneven and the partial fusing occurs after ductile fracture, while the deformation of UFG magnesium alloy is more uniform, and the overall fusing occurs after the formation of cracks from the outer surface of the sample. On this basis, an EA micro-forming thermal processing map of UFG magnesium alloy was constructed. The results show that UFG magnesium alloy has higher power dissipation efficiency and its forming performance is significantly better than that of CG magnesium alloy.

Key words: micro-forming, electroplasticity, ultrafine grains, high-pressure torsion, magnesium alloy

中图分类号:

TG146

虞钧, 陈万吉, 徐杰, 单德彬, 郭斌. 超细晶镁合金电流辅助微拉伸变形行为研究[J]. 机械工程学报, 2022, 58(16): 68-76.

YU Jun, CHEN Wanji, XU Jie, SHAN Debin, GUO Bin. Deformation Behavior of Electrically-assisted Micro-tension in Ultrafine-grained Magnesium Alloy[J]. Journal of Mechanical Engineering, 2022, 58(16): 68-76.

参考文献

[1] QIN Y, BROCKETT A, MA Y, et al. Micro-manufacturing: Research, technology outcomes and development issues[J]. International Journal of Advanced Manufacturing Technology, 2010, 47(9-12): 821-837.
[2] BAO Jianxing, XU Jie, QU Jiazheng, et al. Electrically- assisted micro-forming process of gear structure in TA15 titanium alloy[J]. Journal of Mechanical Engineering, 2021, 57(1): 210-216. 包建兴, 徐杰, 曲家正, 等. TA15钛合金齿轮结构电流辅助微成形工艺研究[J]. 机械工程学报, 2021, 57(1): 210-216.
[3] ZHAO Jingwei, WANG Tao, JIA Fanghui, et al. Experimental investigation on micro deep drawing of stainless steel foils with different microstructural characteristics[J]. Chinese Journal of Mechanical Engineering, 2021, 34(2): 189-199.
[4] CHAN W L, FU M W. Studies of the interactive effect of specimen and grain sizes on the plastic deformation behavior in microforming[J]. International Journal of Advanced Manufacturing Technology, 2012, 62(9-12): 989-1000.
[5] GUO Dongming, LU Yongfeng. Overview of extreme manufacturing[J]. International Journal of Extreme Manufacturing, 2019, 1(2): 9.
[6] VOLLERTSEN F, BIERMANN D, HANSEN H N, et al. Size effects in manufacturing of metallic components[J]. CIRP Annals Manufacturing Technology, 2009, 58(2): 566-587.
[7] VALIEV R Z, ISLAMGALIEV R K, ALEXANDROV I V. Bulk nanostructured matetials from severe plastic deformation[J]. Progress in Materials Science, 2000, 45(2): 103-189.
[8] SABBAGHIANRAD S, KAWASAKI M, LANGDON T G. Microstructural evolution and the mechanical properties of an aluminum alloy processed by high-pressure torsion[J]. Journal of Materials Science, 2012, 47(22): 7789-7795.
[9] WANG C T, GAO N, WOOD R, et al. Wear behavior of an aluminum alloy processed by equal-channel angular pressing[J]. Journal of Materials Science, 2011, 46(1): 123-130
[10] MA E. Instability and ductility of nanocrystalline and ultrafine-grained metals[J]. Scripta Materials, 2003, 49(7): 663-668.
[11] HUANG Y, LANGDON T G. Advances in ultrafine-grained materials[J]. Materials Today, 2013, 16(3): 85-93.
[12] VALIEV R Z, LANGDON T G. Principles of equal-channel angular pressing as a processing tool for grain refinement[J]. Progress in Materials Science, 2006, 51(7): 881-981.
[13] ZHILYAEV A P, LANGDON T G. Using high-pressure torsion for metal processing: Fundamentals and applications[J]. Progress in Materials Science, 2008, 53(6): 893-979.
[14] SALANDRO W A, JONES J J, MCNEAL T A, et al. Formability of Al 5xxx sheet metals using pulsed current for various heat treatments[J]. Journal of Manufacturing Science and Engineering, 2010, 132(5): 051016
[15] SPRECHER A F, MANNAN S L, CONRAD H. Overview no. 49: On the mechanisms for the electroplastic effect in metals[J]. Acta Metallurgica, 1986, 34 (7): 1145-1162.
[16] JONES J J, MEARS L, ROTH J T. Electrically-assisted forming of magnesium AZ31: Effect of current magnitude and deformation rate on forgeability[J]. Journal of Manufacturing Science and Engineering, 2012, 134(3): 034504.
[17] SIOPIS M S, KINSEY B L, KOTA N, et al. Effect of severe prior deformation on electrical-assisted compression of copper specimens[J]. Journal of Manufacturing Science and Engineering, 2011, 133(6): 064502.
[18] STOLYAROV V V. Deformability and nanostructuring of Ti Ni shape-memory alloys during electroplastic rolling[J]. Materials Science and Engineering: A, 2009, 503(1): 18-20.
[19] MAI J M, PENG L F, LAI X M, et al. Electrical-assisted embossing process for fabrication of micro-channels on 316L stainless steel plate[J]. Journal of Materials Processing Technology, 2013, 213 (2): 314-321.
[20] PERKINS T A, KRONENBERGER T J, ROTH J T. Metallic forging using electrical flow as an alternative to warm/hot working[J]. Journal of Manufacturing Science and Engineering, 2007, 129(1): 84-94.
[21] OKAZAKI K, KAGAWA M, CONRAD H. A study of the electroplastic effect in metals[J]. Scripta Metallurgica, 1978, 12 (11): 1063-1068.
[22] SPRECHER A F, MANNAN S L, CONRAD H. Overview no. 49: On the mechanisms for the electroplastic effect in metals[J]. Acta Metallurgica, 1986, 34(7): 1145-1162
[23] ZENG Z, STANFORD N, DAVIES C, et al. Magnesium extrusion alloys: A review of developments and prospects[J]. International Material Review, 2018, 64 (1): 27-62.

超细晶镁合金电流辅助微拉伸变形行为研究

Deformation Behavior of Electrically-assisted Micro-tension in Ultrafine-grained Magnesium Alloy

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