The effect of reinforcement volume ratio on porosity and thermal conductivity in Al-Mgo composites

摘要: In this study, the effects of reinforcement volume ratios (RVR) on composite structure and thermal conductivity were examined in Al-MgO reinforced metal matrix composites (MMCs) 5%, 10% 15% RVR produced by melt stirring. production composites, EN AW 1050A aluminum alloy was used as material MgO powders with particle size -105 µm material. For every specimen at 500 rev/min stirring speed, 750 °C liquid temperature 4 minutes time. Composite samples cooled under normal atmosphere. Then, microstructures determined evaluated using Scanning Electron Microscope (SEM) Energy Dispersive X-ray Spectroscopy (EDS) analysis. general, it observed that exhibited a homogeneous distribution. Furthermore, increase increased porosity. From images, Ansys model generated to determine effective conductivity. Effective decrease ratio.