Evolutions during synthesis of Al–AlN-nanostructured composite powder by mechanical alloying

High-energy milling technique was used to synthesize Al–10 wt.%AlN-nanostructured composite powder in a planetary ball-mill under argon atmosphere up to 25 h. To show the role of AlN particles, process was conducted for monolithic aluminum. The changes in powder characteristics were investigated by time. Microstructure of powders was studied after different milling times by scanning electron microscope (SEM). The morphological evolutions showed...