Ball Milling and Consolidation Process of Al-Cr Powder Mixture—Microstructural Characterization

The interest in studying the synthesis of an Al–Cr alloy system by non-equilibria processes is due to formation metastable or quasicrystalline phases when rapid solidification has been utilized. Similarly, quasicrystals reported a much lesser extent mechanical alloying technique was applied. In present research, mixture powders Cr and Al (both elements with purity 99.99%) compositions Al-5 7.5 at. % subjected ball milling process. Afterwards, powder consolidation process, conducted pressing sintering processes. X-ray diffraction analyses revealed that during 20 h there no second detected. addition, peaks as time increased, nanometric grain size decreased, once treatment applied, crystallite decreased following same tendency. dislocation density estimated using grains; this computation grew throughout process; even after sintering, multiplication dislocations prevailed