Evolution of Thermo-mechanical Properties of Aluminium-Silicon Alloy (Al-1wt%Si)

Abstract

Abstract:In the present article, an attempt has been made for the study of thermo-mechanical properties of alloy sample (Al-1 wt%Si). The effect of this we find good results on the microstructure and hardness of our samples with an addition of 1-3 wt.% (Al-Si). The analyses by transmission electron microscopy (TEM) show that aging heat treatment promotes microstructural changes in morphology, size, and spatial distribution of precipitates.

Some Features of Doping of Nano–Graphite in Natural Coir Fibre Epoxy Composites

“…This was an outcome of improved polymer-filler interaction caused by the high surface area of nano-graphite (N-G) particles and the surface treatment. This was more effective than other strengthening techniques because the polymer-filler interaction takes place through chemical bonds [13][14][15][16]27], and strengthening takes place at a molecular level. The compressive strength showed a drastic improvement and in case of the composite with 45-50% fibres content the value increased by 2.5 times.…”

“…The compressive strength showed a drastic improvement and in case of the composite with 45-50% fibres content the value increased by 2.5 times. Apart from facilitating good dispersion, compatibility between the phases increases stress transfer due to high interfacial adhesion, resulting in improved composite modulus [13][14][15][16]28], and thereby good resistance to compression. The impact strength almost doubled in case of the composite with 45% fibre content but a lower increase was observed in the composite with 35% fibre content.…”

“…A few research ventures in the past have demonstrated the ability of nano-fillers to improve the mechanical properties of polymers. Addition of nano clay by 1.5 in an epoxy matrix resulted in an increase of fracture toughness by 46% on the average [12][13][14][15][16]. The epoxy LY564 reinforced with MWCNTs (multi walled carbon nano tubes) showed 70% increase in tensile impact strength [17].…”

“…After the successful fabrication of monolayer grapheme with excellent mechanical properties in 2004 [19], the development polymeric composites with graphitic fillers started gathering steam. In a study of mechanical properties of polyetherimide (PEI) reinforced with various nano fillers like MWCNT (multi walled carbon nano-tubes (CNT)), CNF (carbon nano fibre), and Graphite nano platelets (GNP), GNP reinforced PEI nano-composites show highest strength and modulus compared to the other two [13][14][15][16]20]. In a comparative study of the impact toughness between HDPE (high density polyethylene) / GNP composites and HDPE / carbon black (CB) composites, the former recorded much greater values [21].…”

Copper (Cu) an Essential Redox-Active Transition Metal in Living System—A Review Article

“…The authors would like to acknowledge the keen support for this work of the Department of Chemistry, Faculty of Science, University of Tabuk, Saudi Arabia [72] [73].…”