Multilayer aluminum composites prepared by rolling of pure and anodized aluminum foils  

通过轧制纯铝箔和阳极铝箔制备多层铝基复合材料（英文）

作　　者：Milan T.JOVANOVI? Nenad ILI? Ivana CVIJOVI?-ALAGI? Vesna MAKSIMOVI? Slavica ZEC 

机构地区：[1]Department of Materials Science, Institute of Nuclear Sciences "Vin?a",University of Belgrade

出　　处：《Transactions of Nonferrous Metals Society of China》2017年第9期1907-1919,共13页中国有色金属学报（英文版）

基　　金：financially supported by the Ministry of Education,Science and Technological Development of the Republic of Serbia through the Project Nos.Ⅲ45012 and ON174004

摘　　要：Experimental results on processing,structural and mechanical characterization of a multilayer composite based on commercially pure aluminum foils were presented.A multilayer composite was produced by hot-rolling of anodized and non-anodized aluminum foils alternately sandwiched.In addition,the same process was applied for bonding of non-anodized foils.In both cases,obtained multilayer composites were compact and sound.In order to study composites microstructural evolution and mechanical properties,optical and scanning electron microscopy(SEM),energy dispersive spectrometry(EDS),X-ray diffraction(XRD)analysis,hardness,tensile and three-point flexural tests were performed.Microstructural characterization confirmed that the rod-like particles distributed in parallel rows in the composite aluminum matrix with anodized foils correspond to Al2O3.Maximum and minimum peaks of oxygen and aluminum,respectively,suggest that after the final hot-rolling of composite with non-anodized foils,a small amount of coarser particles were formed at boundaries between foils.Hardness,strength,modulus of elasticity and flexural strength of both multilayer composites were much higher than those of pure aluminum,whereas ductility was significantly less.The composite with anodized foils exhibited the highest strength and modulus of elasticity,but lower ductility compared to composite processed from non-anodized foils.Fracture failure corresponded to the change of ductility.介绍了一种以商业纯铝箔为基体的多层复合材料的加工过程、组织结构和力学性能。采用热轧制交替排布的纯铝和阳极铝箔制备多层复合材料;此外,采用同样的工艺制备纯铝箔多层复合材料。在这两种情况下,均得到紧实致密的多层复合材料。为了研究复合材料的微观组织演变和力学性能,分别进行了光学和扫描电镜(SEM)、能谱(EDS)、X射线衍射(XRD)分析以及硬度、拉伸和三点弯曲试验。微观组织表征显示,阳极铝复合材料铝基体中平行分布着棒状Al_2O_3颗粒,而且铝箔界面间生成少量粗大颗粒。两种复合材料的硬度、强度、弹性模量和抗弯强度均高于纯铝材料的,而延展性明显降低。与纯铝箔多层复合材料相比,阳极铝箔多层复合材料具有较高的强度和弹性模量以及较低的延展性。材料的断裂失效方式与延展性的变化一致。

关 键 词：aluminum foils anodization multilayer composite Al2O3 particles strength FRACTURE 

分 类 号：TB33[一般工业技术—材料科学与工程]