Effect of rolling routes on formability, microstructure and mechanical properties of Mg-Al-Ca-Mn-Zn magnesium alloy

doi:10.13251/j.issn.0254-6051.2023.11.021

Abstract

Abstract: Effect of four different rolling routes on formability, microstructure and mechanical properties of the Mg-1.2Al-0.4Ca-0.3Mn-0.3Zn magnesium alloy sheet was investigated by means of metallographic microscopy, X-ray diffractometer, tensile testing machine and scanning electron microscope. The results show that the rolling route has an effect on the formability, microstructure and mechanical properties of the Mg-1.2Al-0.4Ca-0.3Mn-0.3Zn magnesium alloy sheet, and the sheet obtained by RD+TD multi-pass cross-rolling has the best formability and no edge crack. Compared with that of the unidirectional multi-pass rolling, the sheet obtains obvious grain refinement and uniform microstructure after multi-pass cross-rolling, the basal texture intensity is reduced from 9.680 to 6.111, the anisotropy is significantly weakened and the plasticity is improved, with the elongation along rolling direction of 19%.

Key words: magnesium alloy, rolling route, formability, microstructure, mechanical properties

CLC Number:

TG146.22

Fang Dejun, Sun Youping, He Jiangmei, Luo Guojian, Luo Zhang. Effect of rolling routes on formability, microstructure and mechanical properties of Mg-Al-Ca-Mn-Zn magnesium alloy[J]. Heat Treatment of Metals, 2023, 48(11): 137-142.

References

[1]徐玉磊, 张奎, 李兴刚, 等. 热处理对压铸AZ91D合金组织及硬度的影响[J]. 材料热处理学报, 2012, 33(11): 63-67.
Xu Yulei, Zhang Kui, Li Xinggang, et al. Effects of heat treatment on microstructure and hardness of die-casting AZ91D alloy[J]. Transactions of Materials and Heat Treatment, 2012, 33(11): 63-67.
[2]Chu C, Wu X, Qiu S, et al. Microstructure and Gd-rich phase evolution of as-cast AZ31-xGd magnesium alloys during semi-solid isothermal heat treatment[J]. Journal of Central South University, 2021, 28(1): 1-15.
[3]Xu T, Yang Y, Peng X, et al. Overview of advancement and development trend on magnesium alloy[J]. Journal of Magnesium and Alloys, 2019, 7(3): 536-544.
[4]He B, Hu Y, Zhao T, et al. Microstructure and mechanical properties of aged and hot rolled AZ80 magnesium alloy sheets[J]. Crystals, 2019, 9(5): 239.
[5]Ji Yafeng, Duan Jinrui, Yuan Hao, et al. Effect of variable thickness cross rolling on edge crack and microstructure gradient of AZ31 magnesium alloy[J]. Journal of Central South University, 2022, 29(4): 1124-1132.
[6]孙营, 池成忠, 李黎忱, 等. 各向异性ZK60镁合金板材拉深成形过程中凸耳行为研究[J]. 塑性工程学报, 2017, 24(1): 85-91.
Sun Ying, Chi Chengzhong, Li Lichen, et al. Effect of anisotropic of ZK60 magnesium alloy sheet on its earing behavior during deep drawing process[J]. Journal of Plasticity Engineering, 2017, 24(1): 85-91.
[7]Zhang H, Huang G, Roven H J, et al. Influence of different rolling routes on the microstructure evolution and properties of AZ31 magnesium alloy sheets[J]. Materials and Design, 2013, 50: 667-673.
[8]Al-Samman T, Gottstein G. Influence of strain path change on the rolling behavior of twin roll cast magnesium alloy[J]. Scripta Materialia, 2008, 59(7): 760-763.
[9]刘华强, 唐荻, 胡水平, 等. 不同轧制工艺对AZ31镁合金薄板室温成形性能的影响[J]. 中国有色金属学报, 2012, 22(12): 3293-3299.
Liu Huaqiang, Tang Di, Hu Shuiping, et al. Effect of different rolling processes on the room temperature formability of AZ31 magnesium alloy sheet [J]. The Chinses Journal of Nonferrous Metals, 2012, 22(12): 3293-3299.
[10]吴泽丽, 梁益龙, 孙皓, 等. 循环交叉轧制对ZK60镁合金组织和性能的影响[J]. 稀有金属, 2018, 42(9): 909-917.
Wu Zeli, Liang Yilong, Sun Hao, et al. The effect of cyclic cross rolling on the microstructure and properties of ZK60 magnesium alloy [J]. Chinese Journal of Rare Metals, 2018, 42(9): 909-917.
[11]Zhong F, Wang Y, Wu R, et al. Effect of rolling temperature on deformation behavior and mechanical properties of Mg-8Li-1Al-0.6Y-0.6Ce alloy[J]. Journal of Alloys and Compounds, 2020, 831: 154765.
[12]徐海洁, 马立峰, 刘崇林, 等. AZ31B镁合金板材多道次轧制路径研究[J]. 机械工程学报, 2017, 53(10): 43-51.
Xu Haijie, Ma Lifeng, Liu Chonglin, et al. Research of multi-pass rolling routes for AZ31B magnesium alloy sheet[J]. Journal of Mechanical Engineering, 2017, 53(10): 43-51.
[13]Liu Xiao, Zhu Biwu, Wu Yuanzhi, 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.
[14]Li J, Zhang A, Pan H, et al. Effect of extrusion speed on microstructure and mechanical properties of the Mg-Ca binary alloy[J]. Journal of Magnesium and Alloys, 2021, 9(4): 1297-1303.
[15]Wang J, Jin P, Li X, et al. Effect of rolling with different amounts of deformation on microstructure and mechanical properties of the Mg-1Al-4Y alloy[J]. Materials Characterization, 2020, 161: 110149.
[16]Hou D, Liu T, Chen H, et al. Analysis of the microstructure and deformation mechanisms by compression along normal direction in a rolled AZ31 magnesium alloy[J]. Materials Science and Engineering A, 2016, 660: 102-107.
[17]Rao K P, Prasad Y, Suresh K. Anisotropy of flow during isothermal forging of rolled AZ31B magnesium alloy rolled plate in three orthogonal directions: Correlation with processing maps[J]. Materials Science and Engineering A, 2012, 558: 30-38.