新能源车用多层铝合金复合材料开发及其性能研究  

Study on the lamellar structure design and properties of aluminum alloy composite for new energy vehicles

作　　者：张斌 曹琦 ZHANG Bin;CAO Qi(Yinbang Metal Clad Material Co.,Ltd.,Wuxi 214145,China)

机构地区：[1]银邦金属复合材料股份有限公司,江苏无锡214145

出　　处：《轻合金加工技术》2021年第10期38-44,共7页Light Alloy Fabrication Technology

摘　　要：新能源汽车换热部件的发展趋势是追求轻量化和更好的耐久性,为了满足工业发展的需求,开发新型的钎焊铝合金复合材料是势在必行。通过添加优化的中间层合金改变传统的3层铝合金复合材料为多层的结构设计,借助显微组织分析、钎焊溶蚀观察、常温抗拉强度对比、模拟海水的腐蚀试验研究等工作,得出新型的多层复合材料相比于目前常规长寿命3层复合材料,轩焊过程中对母材的溶蚀明显减轻,耐腐蚀能力提高一倍以上,新型复合材料的强度提高30%左右。10%4343/10%3003MOD/C芯材/10%3003MOD/10%4343复合材料无论在强度和耐腐蚀能力上均为最佳。该新型复合材料在新能源冷却部件制造中有好的应用前景,可以延长部件的使用寿命、具有高的耐久性以及满足新能源冷却部件更好的内腔洁净度要求。The development trend of heat transfer components for new energy vehicles is lightweight and better durability.In order to meet the development of the industry,it is imperative to develop new brazing A1 alloy composite materials.An optimized interlayer alloy was added to change the traditional three-layer A1 alloy composite to the multi-layer structure design.The research was conducted with the microstructure analysis,brazing corrosion observation,tensile properties comparison at room temperature,and simulation of seawater corrosion test.And the new multilayer composites were compared with the conventional three-layer composites with long life.For the former one,the erosion to the base metal is significantly reduced in the brazing process,and the corrosion resistance is increased by a factor of more than 2,and the strength is increased by nearly 30%.It is found that 10%4343/10%3003MOD/C core material/10%3003MOD/10%4343 composite is the best in both strength and corrosion resistance.This kind of composite material provides a good application prospect for new energy cooling components,which can extend the senice life and achieve high durability of components and meet the requirement of better inner cavity cleanliness of new energy cooling components.

关 键 词：新能源车部件 多层铝合金复合材料 高耐腐蚀性能 

分 类 号：TG146.21[一般工业技术—材料科学与工程]