Characterization of the Aluminium Matrix Composite Reinforced with Silicon Nitride (AA6061/Si₃N₄) Synthesized by the Stir Casting Route

Figure 6

Optical photomicrograph of the (a) as-cast AA6061 alloy, (b) AA6061/15 wt.% Si₃N₄ composite, and (c) AA6061/20 wt.% Si₃N₄ composite.