AZ31镁合金高应变速率轧制边裂及力学性能各向异性

doi:10.13251/j.issn.0254-6051.2020.01.036

金属热处理 ›› 2020, Vol. 45 ›› Issue (1): 181-187.DOI: 10.13251/j.issn.0254-6051.2020.01.036

AZ31镁合金高应变速率轧制边裂及力学性能各向异性

刘筱¹, 王洋洋¹, 朱必武¹, 孙有平², 杨辉¹, 唐昌平¹

1. 湖南科技大学材料科学与工程学院, 湖南湘潭 411201;
2. 广西科技大学机械与交通工程学院, 广西柳州 545006

收稿日期:2019-06-20 出版日期:2020-01-25 发布日期:2020-04-03
作者简介:刘筱(1988—),女,副教授,博士,主要从事轻合金的塑性加工、组织演变和裂纹扩展机理的研究,发表论文20余篇,其中SCI、EI收录10余篇,联系电话:18674355539,E-mail:liuxiao0105@163.com。
基金资助:
国家自然科学基金(51905166,51601062,51605159);湖南省自然科学基金(2018JJ3180);湖南省教育厅优秀青年项目(18B198)

Edge crack and anisotropy of mechanical properties of AZ31 magnesium alloy under high strain rate rolling

Liu Xiao¹, Wang Yangyang¹, Zhu Biwu¹, Sun Youping², Yang Hui¹, Tang Changping¹

1. School of Materials Science and Engineering, Hunan University of Science and Technology, Xiangtan Hunan 411201, China;
2. School of Mechanical and Transportation Engineering, Guangxi University of Science and Technology, Liuzhou Guangxi 545006, China

Received:2019-06-20 Online:2020-01-25 Published:2020-04-03

摘要/Abstract

摘要： 在300~400 ℃对铸态AZ31镁合金进行平均应变速率为10~29 s^-1的高应变速率轧制,研究轧制后镁板边裂、组织及力学性能的各向异性。结果表明:随着平均应变速率的增加,轧制边裂得到改善,350 ℃和400 ℃下边裂长度变化相比300 ℃时更加平缓;晶粒尺寸在温升和应变速率综合作用下并不随平均应变速率的增加而减小,反而出现波动;在相对较低的应变速率下,由于组织中长条形晶粒的存在,导致板材的各向异性明显;随着平均应变速率的增加,长条形晶粒减少,再结晶完全,组织趋于均匀,轧板的各向异性得到改善;轧板拉伸断口中可观察到撕裂棱和韧窝,以韧性断裂方式为主。

关键词: AZ31镁合金, 高应变速率轧制, 边裂, 微观组织, 各向异性

Abstract: High strain rate rolling was carried out on as-casting AZ31 magnesium alloys over the temperature ranges 300 to 400 ℃ with average strain rates of 10-29 s ^-1. The edge cracks, microstructures and anisotropy of mechanical properties were investigated. The results show that with increasing the average strain rate, edge crack is improved. The change of edge crack length at 300 ℃ is more obvious than that at 350 ℃ and 400 ℃. Affected by the temperature rise and average strain rate, the grain size does not decrease, but fluctuates with average strain rate increasing. At a relatively low strain rate, the anisotropy of the sheet is obvious due to the existence of enlongated grains. With the increase of the average strain rate, the amount of enlongated grains decreases and the microstructures are gradually uniform, which can be attributed to the complete recrystallization. Finally, the anisotropy of the sheet is improved. The ductile fracture is the main fracture mechanism for the rolled sheet.

Key words: AZ31 magnesium alloy, high strain rate rolling, edge crack, microstructure, anisotropy

中图分类号:

TG146.2

刘筱, 王洋洋, 朱必武, 孙有平, 杨辉, 唐昌平. AZ31镁合金高应变速率轧制边裂及力学性能各向异性[J]. 金属热处理, 2020, 45(1): 181-187.

Liu Xiao, Wang Yangyang, Zhu Biwu, Sun Youping, Yang Hui, Tang Changping. Edge crack and anisotropy of mechanical properties of AZ31 magnesium alloy under high strain rate rolling[J]. HTM, 2020, 45(1): 181-187.

参考文献

[1]王尔德. 镁合金塑性加工产业技术研究进展[J]. 精密成形工程, 2014, 6(6): 22-30.
Wang Erde. Recent researches in industrial plasticity processing of magnesium alloy[J]. Journal of Netshape Forming Engineering, 2014, 6(6): 22-30.
[2]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): 839-847.
[3]陈振华, 夏伟军, 严红革, 等. 变形镁合金[M]. 北京: 化学工业出版社, 2005: 28.
Chen Zhenhua, Xia Weijun, Yan Hongge, et al. Wrought Magnesium Alloy[M]. Beijing: Chemical Industy Press, 2005: 28.
[4]Luo A, Pekguleryuz M O. Cast magnesium alloys for elevated temperature applications[J]. Journal of Materials Science, 1994, 29(20): 5259-5271.
[5]Wang X J, Xu D K, Wu R Z, et al. What is going on in magnesium alloys?[J]. Journal of Materials Science and Technology, 2018, 34(2): 245-247.
[6]郑翊, 严红革, 陈吉华, 等. 高应变速率轧制ZK60板材的超塑性行为[J]. 中国有色金属学报, 2014, 24(4): 839-847.
Zheng Yi, Yan Hongge, Chen Jihua, et al. Superplasticity behavior of ZK60 alloy sheet prepared by high strain rate rolling process[J]. The Chinese Journal of Nonferrous Metals, 2014, 21(4): 839-847.
[7]Sakai T, Watanade Y, Utsunomiya H. Microstructure and texture of AZ80 magnesium alloy sheet rolled by high speed warm rolling[J]. Materials Science Forum, 2009, 618: 483-486.
[8]Zhu S Q, Yan H G, Chen J H, et al. Effect of twinning and dynamic recrystallization on the high strain rate rolling process[J]. Scripta Materialia, 2010, 63(10): 985-988.
[9]黄龙欢, 胡小东, 赵红阳, 等. AZ31镁合金六辊温轧综合换热系数的测量及辊系优化[J]. 轻合金加工技术, 2015, 43(2): 33-37.
Huang Longhuan, Hu Xiaodong, Zhao Hongyang, et al. Measurement of the integrated heat-transfer coefficient and optimization of the roll system of six-roller warm rolling of AZ31 magnesium alloy[J]. Light Alloy Fabrication Technology, 2015, 43(2): 33-37.
[10]黄志权, 韦建春, 马立峰, 等. AZ31镁合金板材轧制边裂深度预判模型[J]. 稀有金属材料与工程, 2018, 47(6): 1926-1930.
Huang Zhiquan, Wei Jianchun, Ma Lifeng, et al. Prediction model of edge crack depth of rolled AZ31 magnesium alloy sheets[J]. Rare Metal Materials and Engineering, 2018, 47(6): 1926-1930.
[11]Liu X, Zhu B W, Xie C, et al. Twinning, dynamic recrystallization, and crack in AZ31 magnesium alloy during high strain rate plane strain compression across a wide temperature[J]. Materials Science and Engineering A, 2018, 733: 98-107.
[12]马立峰, 庞志宁, 黄庆学, 等. AZ31B镁合金板材轧制边裂与温度场研究[J]. 稀有金属材料与工程, 2014, 43(S1): 387-392.
Ma Lifeng, Pang Zhining, Huang Qingxue, et al. Edge cracks and temperature field of AZ31B magnesium alloy sheet[J]. Rare Metal Materials and Engineering, 2014, 43(S1): 387-392.
[13]Su J, Sanjari M, Kabir A S H, et al. Characteristics of magnesium AZ31 alloys subjected to high speed rolling[J]. Materials Science and Engineering A, 2015, 636: 582-592.
[14]刘筱, 朱必武, 吴志远, 等. 中高应变速率轧制AZ31镁合金的边裂、组织与性能[J]. 中国有色金属学报, 2019, 29(2): 232-240.
Liu Xiao, Zhu Biwu, Wu Zhiyuan, et al. Edge crack, microstructure and mechanical property of AZ31 magnesium alloy sheets rolled by medium-high strain rate[J]. The Chinese Journal of Nonferrous Metals, 2019, 29(2): 232-240.
[15]Wang W K, Chen W Z, Zhang W C, et al. Weakened anisotropy of mechanical properties in rolled ZK60 magnesium alloy sheets with elevated deformation temperature[J]. Journal of Materials Science and Technology, 2018, 28(11): 2042-2050.
[16]石宝东, 彭艳, 韩宇, 等. AZ31镁合金轧制板材各向异性力学性能研究[J]. 燕山大学学报, 2015, 39(3): 221-225.
Shi Baodong, Peng Yan, Han Yu, et al. Investigation on anisotropic mechani cal behavior of AZ31 Mg alloy rolling sheet[J]. Journal of Yanshan University, 2015, 39(3): 221-225.
[17]Mao L H, Liu C M, Gao Y H, et al. Microstructure and mechanical anisotropy of the hot rolled Mg-8.1Al-0.7Zn-0.15Ag alloy[J]. Materials Science and Engineering A, 2017, 701: 7-15.
[18]刘筱, 朱必武, 李落星. Laasraoui-Jonas 位错密度模型结合元胞自动机模拟AZ31镁合金动态再结晶[J]. 中国有色金属学报, 2013, 23(4): 898-904.
Liu Xiao, Zhu Biwu, Li Luoxing. Dynamic recrystallization of AZ31 magnesium alloy simulated by Laasraoui-Jonas dislocation equation coupled cellular automata method[J]. The Chinese Journal of Nonferrous Metals, 2013, 23(4): 898-904.
[19]Xie C, He J M, Zhu B W, et al. Transition of dynamic recrystallization mechanisms of as-cast AZ31 Mg alloys during hot compression[J]. International Journal of Plasticity, 2018, 111: 211-233.
[20]栾娜, 李落星, 李光耀, 等. AZ80镁合金的高温热压缩变形行为[J]. 中国有色金属学报, 2007, 17(10): 1678-1684.
Luan Na, Li Luoxing, Li Guangyao, et al. Hot compression deformation behaviors of AZ81 magnesium alloy at elevated temperature[J]. The Chinese Journal of Nonferrous Metals, 2007, 17(10): 1678-1684.
[21]黄彪, 严红革, 陈吉华, 等. 轧制工艺参数对ZK60镁合金组织和拉伸性能的影响[J]. 机械工程材料, 2018, 42(6): 69-73.
Huang Biao, Yan Hongge, Chen Jihua, et al. Effects of rolling process parameters on microstructure and tensile properties of ZK60 magnesium alloy[J]. Materials for Mechanical Engineering, 2018, 42(6): 69-73.
[22]赵虎, 李培杰, 何良菊. AZ31镁合金铸轧和常规轧制板的变形组织及形变特征[J]. 中国有色金属学报, 2009, 19(11): 1887-1893.
Zhao Hu, Li Peijie, He Liangju. Deformation microstructure and characteristics of cast-rolling and normal rolling AZ31 magnesium alloy sheets[J]. The Chinese Journal of Nonferrous Metals, 2009, 19(11): 1887-1893.
[23]Cho K K, Chung Y H, Lee C W, et al. Effects of grain shape and texture on the yield strength anisotropy of Al-Li alloy sheet[J]. Scripta Materialia, 1999, 40(6): 651-657.

AZ31镁合金高应变速率轧制边裂及力学性能各向异性

Edge crack and anisotropy of mechanical properties of AZ31 magnesium alloy under high strain rate rolling

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