Effect of Ball Size on the Microstructure and Morphology of Mg Powders Processed by High-Energy Ball Milling

ABSTRACT: Commercial powders of pure magnesium were processed by high-energy ball milling. The microstructural and morphological evolution of the powders was studied using scanning electron microscopy (SEM), energy dispersive spectrometry (EDX) and X-ray diffraction (XRD). From the results obtained, it was determined that the ball size is the most influential milling parameter. This was because balls of 1 mm diameter were used after a previous stage of milling with larger balls (i.e., 10 and 3 mm). The powder particles presented an unusual morphology with respect to those observed in the Mg-milling literature and recrystallization phenomena. Moreover, the result strongly varied depending on the ball-to-powder weight ratio (BPR) used during the milling process.

• Autores: Ríos Arbeláez, Jesús María; Restrepo Carvajal, Alex Humberto; Zuleta Gil, Alejandro Alberto; Bolívar Osorio, Francisco Javier; Castaño González, Juan Guillermo; Correa Bedoya, Esteban Alberto; Echeverría Echeverría, Félix
• Tipo de recurso: Article of investigation
• Fecha de publicación: 2021
• Institución: Universidad de Antioquia
• Repositorio: Repositorio UdeA
• Idioma: eng
• OAI Identifier: oai:bibliotecadigital.udea.edu.co:10495/23199
• Acceso en línea: http://hdl.handle.net/10495/23199
• Palabra clave: Microestructura; Microstructure; Recristalización (metalurgia); Recrystallization (Metallurgy); Milling parameters; Morphological changes; Magnesium powders
• Rights: openAccess
• License: http://creativecommons.org/licenses/by/2.5/co/