Effect of TiC addition on the mechanical properties and microstructure of Al-Si alloy
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Abstract
Description
This study is focused on the development and characterization of a stir cast Al-Si alloy
reinforced with titanium carbide nano-particles. The composite was developed using
the stir casting method and the casted samples were prepared with TiC nano-particle at
0.4 (B1), 0.8 (B2), 1.2 (B3), 1.6 (B4) and 2.0 (B5) wt. % of the entire composition, as
well as a control sample, and thereafter subjected to tensile and hardness tests. It was
noticed that none of the samples at the chosen concentrations brought about a
greater hardness value than that of the control sample (Sample A), however they all
show a positive trend with an increase in the % wt. of reinforcement bringing about a
possibility of increase in the hardness value. This suggests that a further increase
above 2.0% of the reinforcement should bring about an increase in hardness above that
of the base Al-Si alloy. On the other hand, the tensile strength was significantly
increased upon reinforcement. B5 exhibited the highest tensile strength by displaying a
transition from needles/plate-like to globular/fibrous morphology.
Keywords
TJ Mechanical engineering and machinery, TP Chemical technology