Influence of rolling direction on strength and ductility of aluminium and aluminium alloys produced by accumulative roll bonding

被引：37
|
作者：
Topic, Irena [1 ]
Hoeppel, Heinz Werner [1 ]
Goeken, Mathias [1 ]
机构：
[1] Univ Erlangen Nurnberg, Inst Gen Mat Properties 1, Dept Mat Sci & Engn, D-91058 Erlangen, Germany
来源：
JOURNAL OF MATERIALS SCIENCE | 2008年 / 43卷 / 23-24期
关键词：
D O I：
10.1007/s10853-008-2754-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Sheets from commercial purity aluminium AA1050 and aluminium alloy AA6016 were processed by accumulative roll bonding to obtain an ultrafine-grained microstructure. The accumulative roll bonded samples showed a significant increase in specific strength paired with high ductility. Despite a strongly elongated grain structure, tensile testing of samples oriented 45A degrees to the rolling direction revealed considerable improvement in elongation to failure compared to the samples oriented parallel to the rolling direction. From hydraulic bulge tests, it was observed that the accumulative roll bonded samples reached higher burst pressures and slightly lower equivalent strains in comparison to the as-received conventionally grain-sized samples. This behaviour reflects the extraordinary mechanical properties of the ultrafine-grained materials and indicates promising metal sheet formability.
引用
收藏
页码：7320 / 7325
页数：6
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