Abstract
Aluminum matrix particulate reinforced composites are of significant interest to industry, but it’s difficult to provide stable properties for this group of material. The mechanical properties of metal matrix composites are deeply influenced by the distribution of reinforcement particulates in the matrix. In this paper uniformity of SiC particles distribution in Al-based composites produced by stir casting and powder metallurgy technique is assessed. Analysis is carried out by means of classical and computer quantification metallographic image analysis methods. In addition, we suggest setting hardness distribution in cross section of samples as an indicator of reinforcement distribution uniformity in the matrix.
Highlights
The ever rising of fuel price day to day has led to a renewed urgency to concentrate on the issue of weight reduction in the aerospace and automotive sectors
For liquid state processing aluminum alloys AK12, AL25, V124 and D16 were used as the matrix material, while SiC particles with volume fraction 5, 10 and 15 wt% an average size of 28 μm were used as the reinforcement material
For solid state processing aluminum alloys D16 and V95 were used as the matrix material, while SiC particles with volume fraction 20 wt % were used as the reinforcement material
Summary
The ever rising of fuel price day to day has led to a renewed urgency to concentrate on the issue of weight reduction in the aerospace and automotive sectors. As monolithic alloys possess low strength to weight ratio, hardness, stiffness etc. The area of application of these alloys restricted This limitation has circumvented by incorporation of harder and stiffer ceramic particulates in the matrix, which is known as composite. Composites are significant for engineering materials due to their excellent mechanical properties over monolithic alloys. Aluminum and its alloys based metal matrix composites (MMCs) reinforced by silicon carbide particles are one of the widely known composites because of their superior properties such as high strength to weight ratio, hardness, stiffness, wear and corrosion resistances etc. The distribution of particulates in MMCs is a major factor in determining the in-service properties of engineering components [2] [3].
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