Fig. 3

The SEM morphologies of the ball milled Al-GNSs composite powders at (a) 0 h, (b) 2 h, (c) 5 h, (d) 10 h, (e) 15 h and (f) 20 h
The SEM morphologies of the ball milled Al-GNSs composite powders at (a) 0 h, (b) 2 h, (c) 5 h, (d) 10 h, (e) 15 h and (f) 20 h