Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 607, Issue -, Pages 188-196Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2014.04.013
Keywords
Composites; Bulk deformation; Bonding; Mechanical characterization
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Funding
- Shahid Chamran University of Ahvaz [EN-92-874095]
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An Al/Al2O3/SiC hybrid metal matrix composite was fabricated by accumulative roll bonding (ARB). A mixture of Al2O3 and SiC (2 vol%) powders was poured between four Al layers during the first two ARB cycles. The process was continued up to eight cycles without adding the powders in subsequent cycles. For comparison, non-reinforced (monolithic) Al was also processed by ARB under the same conditions. At the initial stages, particle free zones as well as particle clusters were observed on the microstructure of the composite. After eight ARB cycles, a composite with a uniform distribution of particles was produced. At this stage, the tensile strength of the hybrid composite and the monolithic Al reaches to about 195 MPa and 150 MPa, respectively, about 5.3 and 4 times larger than that of annealed Al. The hardness of the composite and the monolithic Al was measured as 83 and 58 VHN, respectively. Fracture surface after tensile testing revealed dimples at some regions after eight ARB cycles. (C) 2014 Elsevier B.V. All rights reserved.
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