Figure 3. Arrangement of reinforcement wires: a) 2-wires, b) 3-wires and c) 4-wires

From

Hot Extrusion of Reinforced Aluminum Powder Compacts

Mohammed Y. Abdellah, M. Mahmoud Moustafa, Ashraf T. Mohamed

International Journal of Materials Lifetime. 2014, 1(1), 1-6