Mechanical Alloying: Processing and Materials

Abstract

Mechanical alloying is a technique involving the production of alloys and compounds, which permits the development of metastable materials (with amorphous or nanocrystalline microstructure) or the obtention of solid solutions with extended solubility. The elements or compounds to be mix (usually as powders) were introduced in jars, together with a few numbers of balls. Regarding the scope of this Special Issue, so many options were given to the potential authors: Synthesis and processing in solid-state science and technology: high-energy milling, severe plastic deformation of materials (SPD), reaction milling. New materials/processes: oxide dispersion strengthened (ODS) alloys, nanomaterial, nano-composites, and quasi-crystalline phases/materials. Structural characterization: mechanically induced structural changes in materials (point defects, dislocations, clusters, precipitates, grain boundaries), surfaces and interfaces in activated solids. New equipment and procedures: milling equipment based on improved milling dynamics, processing optimization and milling contamination. Finally, only height articles have been published. Nevertheless, the set of materials, characterization and applications described in the manuscripts provides a wide spectrum of the potential of this processing technique