Transactions of Materials and Heat Treatment

Title：Influence of preparation process on micro-mechanism of formability for Al-Mn alloy of battery shell

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ClassificationCode：TG339

year,vol(issue):pagenumber：2024,49(1):124-133

Abstract：

The influence of preparation process of Al-Mn alloy plates on the micro-mechanism of formability for lithium ion battery shell plates was studied by means of metalloscope, confocal microscope, scanning electron microscope, transmission electron microscope, electron back scattering diffraction technology and mechanical analysis. The results show that compared with the plates prepared by hot-rolling billet, the surface roughness and oxide film thickness of the plates produced by casting-rolling billet are larger, which causes debris to get stuck during stamping and affects the forming efficiency of battery shell. Through the homogenization annealing of the casting-rolling billet at 580 ℃, the grains are refined and the second phase structure of casting-rolling dendrite gap is dispersed. And through the finished product annealing at 380 ℃, the second phase size and the dispersion precipitation is controlled to weaken the rolling texture and strengthen the random texture and Cube texture. By controlling a certain mechanical properties, the anisotropy is weakened and the ear-making rate is reduced, thus the formability of the plate is improved.

Funds：

通辽市科技计划项目（2022SYSJ0172）

作者简介：潘秋红（1970 -），女，硕士，副教授 E-mail：panhong9004@163.com

Reference：

[1] 唐葆君，王翔宇，王彬，等.中国新能源汽车行业发展水平分析及展望[J].北京理工大学学报：社会科学版，2019，21(2)：6-11.

Tang B J, Wang X Y, Wang B, et al. Analysis and prospect of China′s new energy vehicles industry development level [J]. Journal of Beijing Institute of Technology: Social Sciences Edition, 2019, 21(2): 6-11.

[2] 杨帆，孔方方.国内外新能源汽车动力电池发展及供求现状[J].上海汽车，2014,(9)：3-8.

Yang F, Kong F F. Current status of the power battery in new energy vehicle both at home and abroad[J]. Shanghai Auto, 2014, (9): 3-8.

[3] 林琳，田野，葛义勇.深冲用3004铝合金带材工艺研究[J].机械工程师，2014,(4)：65-67.

Lin L, Tian Y, Ge Y Y. Study on the process of AA3004 strip for deep drawing[J]. Mechanical Engineer, 2014, (4): 65-67.

[4] 张洪波，李梦龙，李梦英.纯电动客车电池壳用钢研究进展及应用现状[J].河北冶金，2016，(9)：1-4.

Zhang H B, Li M L, Li M Y. Research progress and application situation of steel for battery box of battery eelectric vehicles[J]. Hebei Metallurgy,2016, (9):1-4.

[5] 韩玉龙，廖腾，高军.包钢电池壳钢的研制[J].包钢科技，2018,44(1)：1-5.

Han Y L, Liao T, Gao J. Development of battery shell steel in Baotou Steel[J]. Science & Technology of Baotou Steel, 2018, 44(1): 1-5.

[6] 王国军.铝锰系铝合金板带材深冲和变薄拉深行为的影响因素[D]. 哈尔滨:哈尔滨工程大学,2005

Wang G J. The Influecing Factors of Deep Drawing and Ironing Ac-tion on the Al-Mn Aluminum Alloys Sheep and Strip [D]. Harbin: Harbin Engineering University，2005.

[7] Michaela lapáková, Mariia Zimina, Stefan Zaunschirm, et al. 3D analysis of macrosegregation in twin-roll cast AA3003 alloy[J]. Materials Characterization,2016, 118: 44-49.

[8] 阙石生,黄瑞银,徐始祥,等.生产工艺参数对动力电池壳用3003-H14铝合金带材制耳率影响[J].轻合金加工技术,2017,45(9):30-33.

Que S S, Huang R Y, Xu S X, et al. Ming-shun earing ratios of 3003-H14 Al-alloy strips for power batteryshells with different production parameters [J]. Lightalloy Fabrication Technology, 2017, 45(9):30-33.

[9] 黄元春,许天成,肖政兵,等. 弥散相对3003铝合金再结晶晶粒尺寸的影响[J].材料工程，2016,46(6):65-72.

Huang Y C, Xu T C, Xiao Z B, et al. Effect of dispersed precipitates on recrystallized grain size of 3003 aluminum alloy [J]. Journal of Materials Engineering, 2016, 46(6):65-72.

[10]郑玉林，赵启忠，蒙玲，等. 退火温度对3003铝合金板材组织和性能的影响[J]. 轻合金加工技术,2014,42(6):38-40.

Zheng Y L, Zhao Q Z, Meng L, et al. Effects of different annealing temperatures on microstructure and properties of 3003 aluminum alloy sheet [J]. Lightalloy Fabrication Technology, 2014, 42(6):38-40.

[11]赵明露,刘炳. 铝锰合金及其复合材料的滑动摩擦磨损性能[J].特种铸造及有色合金,2011,31(12):1148-1150.

Zhao M L，Liu B, Friction and wear behavior of aluminum manganese alloy and its composites [J]. Special Casting & Nonferrous Alloys, 2011, 31(12):1148-1150.

[12]GB/T 16865—2013，变形铝、镁及其合金加工制品拉伸试验用试样及方法[S].

GB/T 16865—2013，Test pieces and method for tensile test for wrought aluminium and magnesium alloys products[S].

[13]张德芬，胡卓超，左良，等.3004铝合金再结晶织构及其显微组织[J].东北大学学报，2004，(9)：840-843.

Zhang D F, Hu Z C, Zuo L, et al. Recrystallization texture and microstructure of AA3004[J]. Journal of Northeastern University, 2004, (9): 840-843.

[14]Huang L, Huang G J, Cao L F, et al. Influence of pre-recovery on the subsequent recrystallization and mechanical properties of a twin-roll cast Al-Mn alloy[J]. Materials Science & Engineering A, 2017, 682: 63-72.

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