Microstructural evaluation of ball-milled nano Al2O3 particulate-reinforced aluminum matrix composite powders

• Main Authors: Matori, Khamirul Amin, Mohamed Ariff, Azmah Hanim, Mohd. Yusoff, Hamdan, Yunus, Robiah, Ostovan, Farhad, Toozandehjani, Meysam, Oskoueian, Arshin
• Format: Article
• Language: English
• Published: Carl Hanser Verlag GmbH & Co. 2015
• Online Access: http://psasir.upm.edu.my/id/eprint/45474/1/NANO.pdf; http://psasir.upm.edu.my/id/eprint/45474/; https://www.hanser-elibrary.com/doi/epdf/10.3139/146.111232
• Institution: Universiti Putra Malaysia

A mechanically alloyed mixture of Al-1 wt.% nano-alumina (n-Al2O3) composite powders was produced using a planetary ball milling machine. Different milling times were applied to investigate the effect of milling time on the dispersion and microstructure of n-Al2O3 particulate reinforcement within the aluminum matrix. A good homogeneous dispersion of n-Al2O3 particulates was observed after 8 h of milling. Longer milling times had no significant effect on the dispersion and morphology of n-Al2O3 particulates within the aluminum matrix because a steady state had been reached.