Effects of atmosphere and milling time on the coarsening of copper powders during mechanical milling

Effect of W powders characteristics on the Ti-rich phase and properties of W–10wt.% Ti alloy

“…It is considered that the powder particles were impacted heavily by WC balls during high energy ball milling resulting in iterative deformation, which caused the strain. The increase of the local strain caused the increase of dislocation density [21]. With the increase of milling time, dislocation and the new interfaces created all increase.…”

A statistical prediction of density and hardness of biodegradable mechanically alloyed Mg–Zn alloy using fractional factorial design

“…In addition, the shifted angles were also caused by a reduction of crystallite size and/or the accumulation of lattice strain during mechanical alloying as shown in Table 5. This indicated that the formation of fine crystallite was typically affected by increasing the number of collisions per unit time during milling process [15,16]. Fig.…”

Fractal process and particle size distribution in a TiH2 powder milling system

“…The ambient atmosphere should be strictly controlled for the reason that the oxygen content in the powders milled in air atmosphere is higher than in argon atmosphere. Therefore, the powders milled in air atmosphere will be covered with a thin oxide layer, making them brittle to produce too much finer powders [15]. The powders of selected particle size scales were observed by scanning electron microcopy (SEM).…”