Effect of ball size on the microstructure and morphology of mg powders processed by high-energy ball milling

Jesus Rios, Alex Restrepo, Alejandro Zuleta, Francisco Bolívar, Juan Castaño, Esteban Correa, Félix Echeverria

    Research output: Contribution to journalArticlepeer-review

    3 Scopus citations


    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.

    Original languageEnglish
    Article number1621
    Issue number10
    StatePublished - Oct 2021

    Bibliographical note

    Funding Information:
    Funding: This research was funded by “Departamento Administrativo de Ciencia, Tecnología e Innovación– COLCIENCIAS (Project 111580862830, contract 183–2019), Universidad de Antioquia, Centro de Investigación para el Desarrollo y la Innovación (CIDI) of the Universidad Pontificia Bolivariana (Rad:482C-05/19–35) and Universidad de Medellín”.

    Publisher Copyright:
    © 2021 by the authors. Licensee MDPI, Basel, Switzerland.


    • Magnesium powders
    • Microstructure
    • Milling parameters
    • Morphological changes
    • Recrystallization


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