“…Traditional reinforcing phases in composites are ceramic particles, such as Al 2 O 3 , which are characterized by high hardness and melting temperatures [12]. Al-Al 2 O 3 composites are produced using various methods, including stir casting [13,14], gas pressure infiltration [15,16], ultrasonic casting [17,18], squeeze casting [19], semi-solid mechanical stirring [20], powder metallurgy [21] and mechanical alloying [22][23][24][25][26][27][28][29][30][31]. Mechanical alloying [32][33][34][35][36][37] is the most effective method for forming a homogeneous ultrafine structure.…”