摘要
采用累积复合轧制(ARB)技术的两种工艺路径,研究变形后1060工业纯铝的显微组织和力学性能变化.结果显示:路径A的晶粒细化效果比路径B明显;ARB7道次后,采用路径A的试样的显微组织由拉长的细小纤维状晶粒组成,路径B的试样由扁平状晶粒组成;路径A和路径B的试样的平均晶粒尺寸分别为470nm和680nm;路径A的试样的抗拉强度提高程度大于路径B.1060工业纯铝在ARB过程中的强化机制主要是细晶强化.初步分析了ARB过程中材料的变形规律和细小晶粒的形成机制.
Experiments were conducted to investigate the effect of grain refining mechanism on the microstructure and mechanical properties of 1060 commercially pure aluminum in accumulative roll bonding （ARB）, in which two kinds of routes, Route A and Route B, were employed. The results show that the effectiveness of Route A is better than Route B. After ARB of 7 passes, the microstructure of the specimen by Route A consists of thin elongated fibriform grains with an average size of 470 nm, but that by Route B does compressed grains with an average size of 680 nm. The improvement in tensile strength by Route A is greater than that by Route B. The strengthening mechanism of 1060 commercially pure aluminum by ARB is fine-grain strengthening. The deformation rule and the formation mechanism of fine grains were analyzed elementarily in ARB process.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
2008年第12期1378-1382,共5页
Journal of University of Science and Technology Beijing
关键词
工业纯铝
累积复合轧制
力学性能
显微组织
晶粒细化机制
commercially pure aluminums
accumulative roll bonding （ARB）
mechanical properties
microstructure
grain refining mechanism
