Microstructure and Mechanical Properties of Low Pressure Casting ZL102 for New Energy Vehicle Battery Package
Author of the article:XU Wenzhi;CHENG Yongqi;CHEN Yuhang;LUO Gan
Author's Workplace：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
Key Words：battery pack case ZL102 low pressure casting microstructure mechanical properties
Abstract：
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.
