Aluminium-SiC composite: Study of its mechanical properties
Keywords:Composite materials, Indentation and hardness, Tensile properties, Deformation and fracture
AbstractCylindrical specimens with geometries and sizes, in agreement with the standard of American Society for Testing Materials (ASTM), they were used to characterize the tension behaviour of the composite. A significant effect of the SiC shape/size on the tensile behaviour of aluminium-based composite was observed, caused by the differences between the superheat (993 K) and the mould temperatures (333 K, 473 K, 623 K) in the melting practice. Ultimate tensile stress and Fracture Toughness factor for the composite showed a numerical advantage over the corresponding ones to the aluminium at a solidification speed of 82.5 KÂ·s-1. At the mould temperature of 473 K, ultimate tensile stress decreased 8.9 % meanwhile Fracture Toughness factor increased 4.3 %. For mould temperatures higher than 473 K the size and number of SiC-clusters determined the tension behaviour of the specimens. High hardness values are obtained with high cooling rates (82.5 KÂ·s-1) and it diminishes gradually as the cooling speed decreases for both sizes of particles.
R. Behera, N. R. Mohanta, and G. Sutradhar, "Distribution of SiC particulates in stir cast aluminium alloy metal matrix composites and its effect on mechanical properties," International Journal of Emerging trends in Engineering and Development, vol. 1, pp. 194- 205, 2012.
M. K. Surappa and P. K. Rohatgi, "Preparation and properties of cast aluminium-ceramic particle composites," Journal of Materials Science, vol. 16, pp. 983-993, 1981.
V. Kevorkijan, Z. I. Raziskovalec, A. Kategorije, and B. Suštaršič, "The introduction of fine SiC particles into a molten Al alloy matrix: Application to composite material casting, "Kovine, zlitine, Tehnologije, vol. 39, pp. 447-454, 1995.
J. Hashim, "The production of cast metal matrix composite by a modified stir casting method," Jurnal Teknologi, vol. 35, pp.9-20, 2001.
D. S. Prasad, C. Shoba, and N. Ramanaiah, "Investigations on mechanical properties of aluminum hybrid composites," Journal of Materials Research and Technology, vol. 31, pp. 79-85, 2014.
S. Tzamtzis, N. Barekar, H. Nadendla, J. Patel, B. Dhindaw, and Z. Fan, "Processing of advanced Al/SiC particulate metal matrix composites under intensive shearing - a novel Rheo-process," Composites Part A: Applied Science and Manufacturing, vol. 40, pp.144- 151, 2009.
J. Roy, S. Chandra, S. Das, and S. Maitra, "Oxidation behavior of silicon carbide-A review," Reviews on Advanced Materials Science, vol. 38, pp. 29-39, 2014.
R. N. Ibrahim and H. L. "Stark, Validity requirements for fracture toughness measurements obtained from small circumferentially notched cylindrical specimens," Engineering Fracture Machanics, vol. 28, pp. 455-460, 1987.
K. K. Chawla, Composite Materials :Science and Engineering. New York: SpringerVerlag New York, 2012.
M. C. Flemings, Solidification Processing. United States of America: McGraw-Hill Inc., 1974.
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