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ZL102低压铸造电池包箱体组织与力学性能研究
Microstructure and Mechanical Properties of Low Pressure Casting ZL102 for New Energy Vehicle Battery Package
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- DOI:
- 作者:
- 徐文治 程永奇 陈宇航 罗干
XU Wenzhi;CHENG Yongqi;CHEN Yuhang;LUO Gan
- 作者单位:
- 广东工业大学材料与能源学院 华南理工大学材料与科学与工程学院
School of Materials and Energy,Guangdong University of Technology,Guangzhou 510006,China;School of Materials Science and Engineering,South China University of Technology,Guangzhou 510006,China
- 关键词:
- 电池包箱体 ZL102 低压铸造 显微组织 力学性能
battery pack case ZL102 low pressure casting microstructure mechanical properties
- 摘要:
- 对低压铸造ZL102新能源汽车电池包箱体的不同位置取样,利用金相显微镜、万能试验机和扫描电镜(SEM)等对该产品的组织与力学性能进行了研究。结果表明,箱体表面存在流痕、凹陷,内部存在缩松、夹杂等缺陷。显微组织由基体α(Al)、块状初晶硅、粗大片状共晶硅[α(Al)+Si]和细小的化合物组成。箱体不同位置其力学性能存在明显差异,试样平均硬度值为65.2 HBS,抗拉强度178 MPa,冲击韧度21.31 kJ/m^2。探讨了粗大硅相、凹陷,缩松、夹杂等缺陷的处理措施,提出了电池包箱体低压铸造工艺的改进方案,以提高低压铸造生产大型薄壁铝合金铸件的质量。The microstructure and mechanical properties of low pressure casting ZL102 new energy automotive battery package were studied by means of metallographic microscope,universal testing machine and scanning electron microscope(SEM).The results show that there are flow marks and depressions on the surface of the box,and there are shrinkage defects and inclusions inside.The microstructure consists of matrixα(Al),massive primary silicon,thick lamellar eutectic silicon[α(Al)+Si]and small compounds.The average hardness value of the sample is 65.2 HBS,the tensile strength is 178 MPa,and the impact toughness is 21.31 kJ/m^2.The measures to deal with the defects such as coarse silicon phase,depression,shrinkage and inclusion are discussed.In order to improve the quality of large-sized thin-walled aluminum alloy castings produced by low-pressure casting,an improved low-pressure casting technology of battery package body is proposed.