固-液复合铸造铝/铜双金属复合材料组织及性能研究  

Study on Microstructures and Properties of Aluminum/Copper Bimetal Composite Prepared by Solid-liquid Compound Casting

作　　者：叶中飞 吕中宾 卢明 江鸿翔[2] 李世欣 李彦强 赵九洲[2] 何杰[2] 张丽丽[2] YE Zhongfei;LYU Zhongbin;LU Ming;JIANG Hongxiang;LI Shixin;LI Yanqiang;ZHAO Jiuzhou;HE Jie;ZHANG Lili(Electric Power Research Institute of State Grid Henan Electric Power Company,Zhengzhou 450052,China;Shi-changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China)

机构地区：[1]国网河南省电力公司电力科学研究院,河南郑州450052 [2]中国科学院金属研究所师昌绪先进材料创新中心,辽宁沈阳110016

出　　处：《铸造技术》2022年第3期176-179,共4页Foundry Technology

基　　金：国家电网有限公司总部科技项目(5500-201924129A-0-0-00)。

摘　　要：利用固-液复合铸造法实现了Al-Mg-Si合金与Cu-Cr-Zr合金的复合制备,对所制备Al-Mg-Si/Cu-Cr-Zr双金属复合材料的组织及性能进行表征分析。结果表明:复合材料中铝合金侧主要由α-Al基体和(Mg,Si)相组成;铜合金侧主要由铜基体和富Cr相组成;复合材料界面过渡层厚度约5~10μm,主要由铜和铝元素组成,过渡层中未见明显的析出相。随着复合材料中铜合金侧厚度的增加,材料的抗拉强度提高;随着环境温度的降低,铝/铜复合材料的抗拉强度先逐渐提高然后降低;当环境温度为零下30℃,复合材料的抗拉强度约390 MPa。The Al-Mg-Si/Cu-Cr-Zr bimetal composite was prepared by solid-liquid composite casting.The microstructures and properties of Al-Mg-Si/Cu-Cr-Zr bimetallic composites were characterized and analyzed.The results show that the aluminum alloy side of the bimetal composite is mainly composed ofα-Al matrix and(Mg,Si)phase.The copper alloy side is mainly composed of copper matrix and Cr rich phase.The interfacial transition layer of the bimetal composites is 5~10μm thick and mainly composed of copper and aluminum elements.No obvious precipitates are found in the transition layer.The tensile strength of the bimetal composite increases with the increase of copper alloy side thickness.With the decrease of ambient temperature,the tensile strength of Al/Cu bimetal composites increases first and then decreases.When the ambient temperature is-30℃,the tensile strength of the bimetal composite is about 390 MPa.

关 键 词：固-液复合铸造 铝/铜复合材料 组织 性能 

分 类 号：TG136[一般工业技术—材料科学与工程] TG244[金属学及工艺—合金]