Three new ultrafine hypoeutectic die-cast alloys based on quaternary Al-Cu-Si-Mg system were developed. The CALPHAD thermodynamic modelling of Scheil description was conducted to predict the volume fractions eutectic mixtures. designed fraction mixtures Al-xCu-2.2Si-1.1Mg (x = 5, 6.6 and 10.6 wt%) determined be 0.2, 0.25 0.3, respectively. With increase in fraction, yield strength ultimate tens...

A series of fatty acid binary eutectic mixtures were prepared by using capric acid, lauric myristic palmitic and stearic (CA, LA, MA, PA, SA) as raw materials. The phase diagrams these drawn the Schrader equation. thermal properties structure determined differential scanning calorimetry (DSC). stability was assessed thermogravimetric analysis (TGA) cycling tests. DSC results showed that change ...

Cast irons are known to be easy shape by sand casting due their high eutectic fraction. Despite this fact, together with cost benefits, obtaining good quality castings is not an task, although it depends on the level of defects allowed in each case. Casting here reviewed and classified into three classes according main origin: (1) related mixtures used make molds; (2) associated mold design geo...

Triggered by the strong antimicrobial activities of menthol and various fatty acids, eutectic mixtures based on components are developed, producing new solvents that have possibilities to become a antibiotic. This study aims provide an insight into deep (DESs) developed. Menthol-based DES combined with namely propionic acid, butanoic hexanoic octanoic decanoic levulinic were successfully obtain...

We present a numerical study of the effect of a free-energy anisotropy of the solidsolid interphase boundaries on the formation of tilted lamellar microstructures during directional solidification of nonfaceted binary eutectic alloys. We used two different methods – phase-field (PF) and dynamic boundary-integral (BI) – to simulate the growth of periodic eutectic patterns in two dimensions. For ...

Laser surface melting has been applied to near eutectic NiO-YSZ sintered ceramics. The objective is to generate a functional gradient composite material with graded microstructure and composition. At low solidification rates the resultant material has a graded composition, with a severe NiO segregation towards the surface. A thick NiO layer whose thickness depends on the travelling speed is for...