Mechanical Properties of Hot Extruded Al (Mg)-MnO₂ Composites

Abstract

Many of our modern technologies require materials with unusual combinations of properties that cannot be met by the conventional metal alloys, ceramics and polymeric materials. This is especially true for materials that are needed for aerospace, underwater and transportation applications. An economical way of producing metal matrix composite (MMC) is the incorporation of the particles into the liquid metal and casting. The objective of this work is to reinforce Al 1100-Mg alloy with different wt% of MnO2 (0, 3, 6, 9 and 12) was added by melt stirring method and Hot Extrusion is carried out. Microstructural Studies using Scanning Electron Microscopy (SEM) and Mechanical property like hardness and tensile properties have been investigated for extruded base alloy and composites.

Study of Microstructural and Mechanical Properties of Al/SiC/TiO2 Hybrid Nanocomposites Developed by Microwave Sintering

“…The average roughness (Ra) of the hybrid nanocomposites is shown in Figure 7. The increase in average roughness (Ra)of Al/SiC/TiO2 hybrid nanocomposites can be regarded as the effect of insoluble and hard ceramic particles and is consistent with the already reported studies [45,46]. The Al/SiC/TiO2 hybrid nanocomposites show the varyingnumber of protrusions (hills) and valleys along with the topographic surface, an idea about the surface morphology.…”