Microsegregation is one of the most important phenomena occurs during solidification. It usually results in formation of some unexpected second phases which generally affect the mechanical properties and specially reduce the workability of casting products. The aim of this research is to study the effect of cooling rate and grain refinement on the microsegregation in Al-4.8 wt.% Cu. For this p...

Automatic program specialization has numerous application areas ranging from specialization of scientific computation to automatic compiler generation. During the last decade, several automatic partial evaluators have been developed and demonstrated their usefulness. However, none of these have both been for a typed imperative language and self-applicable. The main content of this thesis is the...

Mechanisms of the formation of nanoparticles of some B2 shape memory intermetallic compounds, glass-forming Zr-based alloy, and pure Ti obtained by spark erosion method in liquid nitrogen and argon are considered. One of peculiarity is a foam-like structure, which covers the surface of micron-sized particles that appear during spark erosion. Such morphology is related to the nanosized particles...

Magnesium-Aluminum alloys considered specially Mg-6Al very important in engineering applications, but this have weakly wear resistance and low hardness, therefore, addition some materials such as (Al2O3) at (3%-4%-5%) weight percentage to improve the hardness resistance. In present research was prepare a master alloy then recast after adding under argon gas electrical furnace, study effect of o...

The earlier-developed master equation approach and kinetic cluster methods are applied to study the kinetics of L10-type orderings in alloys, including the formation of twinned structures characteristic of cubic–tetragonal-type phase transitions. A microscopical model of interatomic deformational interactions is suggested which generalizes a similar model of Khachaturyan for dilute alloys to th...