Grain refinement of cast commercial purity aluminium by vanadium and the underlying mechanism have been investigated. Addition 0.3 wt% 0.4 leads to columnar equiaxed transition average grain sizes are refined around 196 ?m 154 ?m, respectively. Pro-peritectic equilibrium Al10V particles identified near centres. These either octahedron or plate morphology with bound planes belonging {111} crysta...

This article describes work performed on the assessment of the levels of airborne ultrafine particles emitted in two welding processes metal-active gas (MAG) of carbon steel and friction-stir welding (FSW) of aluminium in terms of deposited area in alveolar tract of the lung using a nanoparticle surface area monitor analyser. The obtained results showed the dependence from process parameters on...

In this paper the method of modelling of high-speed nonequilibrium two-phase turbulent flows with phase transition in disperse phase is presented. The method proposed in this paper has the following features: 1) the mathematical model includes conservation equations for gas and solid particles, as well as the equations for gas vibration molecular energy, conservation of species and phase transi...

Non homogeneous particle distribution is one of the greatest problems in casting Metal Matrix Composites (MMC's). To optimize some of the parameters for uniform particle distribution for batch compocasting the present simulation studies were conducted. The simulation involves visualisation experiments. In the visualisation experiments liquid and semi solid aluminium are replaced by other fluids...

The word "electrocoagulation" (EC) will be sometimes used with "electroflotation" (EF) and can be considered as the electrocoagulation/flotation (ECF) process. Through the process of electrolysis, coagulating agents such as metal hydroxides are produced. When aluminium electrodes are used, the aluminium dissolves at the anode and hydrogen gas is released at the cathode. The coagulating agent co...

Influences of microstructure and properties of an aluminium alloy on resistance to dynamic perforation are predicted using a decoupled multiscale modelling approach. At the scale of individual grains, a crystal plasticity model is developed accounting for finite elastic and plastic deformations, thermal softening and energy storage mechanisms linked to microscopic residual stress fields induced...

Interfacial engineering has been investigated as a method of increasing thermal conductivity in variety aluminium/graphite composites but remains unexplored the few graphite-containing aluminium foams developed to date. In this study, replication was used fabricate composite by infiltrating with liquid packed preforms containing SiC-coated oriented graphite flakes and NaCl particles, latter act...