Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 558, Issue -, Pages 331-337Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2012.08.008
Keywords
Mechanical characterization; Composites; Accumulative roll bonding; Grain refinement
Categories
Funding
- international Center for Science, High Technology & Environmental Sciences
- INSF [90004373]
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In the present work, accumulative roll bonding (ARB) process was used to produce Al/Cu-p composite using Al 1100 strips and Cu fine particles. Microstructure and mechanical properties of the composites were studied during various ARB cycles by scanning electron microscopy (SEM), tensile test and the Vickers micro-hardness test. The SEM results revealed that, as the ARB cycle increases the layer of Cu particles is broken which leads to generation of elongated dense Cu clusters. At higher strains, the size of elongated clusters reduces while their uniformity and sphericity increase. This microstructure changes leads to improving the hardness, strength and elongation during ARB process. Generally, the mechanical properties of Al/Cu-p composite are better than those of pure Al at the same cycle of ARB. The results also demonstrated that, the Cu reinforcement particles in the form of uniformly dispersed clusters improve simultaneously the strength and toughness of Al during the ARB process. (C) 2012 Elsevier B.V. All rights reserved.
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