Radiation enhanced precipitation of solute atoms in AlCu binary alloys

Dislocation–solute cluster interaction in Al–Mg binary alloys

The close-range interaction of dislocations and solute clusters in the Al–Mg binary system is studied by means of atomistic simulations. We evaluate the binding energy per unit length of dislocations to the thermodynamically stable solute atmospheres that form around their cores, at various temperatures and average solid solution concentrations. A measure of the cluster size that renders linear...

Defects Associated with Nanostructures in AlZnMg and AlCu(Mg) Alloys

The present work reports on a positron annihilation study addressing the structural and chemical characterization of solute aggregates containing open volumes (vacancies and/or misfit regions at precipitate–matrix interfaces) in AlZnMg, AlCu, and AlCuMg alloys. High resolution transmission electron microscopy results for selected ageing conditions are also presented. Two main points are discuss...

Influence of Solute Atoms on Deformation Behaviour of Selected Magnesium Alloys

Precipitation Hardening of Metal Alloys

Precipitation hardening, or age hardening, provides one of the most widely used mechanisms for the strengthening of metal alloys. The fundamental understanding and basis for this technique was established in early work at the U. S. Bureau of Standards on an alloy known as Duralumin [1,2]. Duralumin is an aluminum alloy containing copper and magnesium with small amounts of iron and silicon. In a...

Solute trapping and the non-equilibrium phase diagram for solidification of binary alloys

A phase field model for the solidification of binary alloys is presented and analyzed. A matched asymptotic approach is used to recover the model’s leading order sharp interface motion. Equations for both the solute profile and free energy balance at the interface are derived, demonstrating solute trapping at large growth velocities and leading to a construction of the non-equilibrium phase dia...