Evaluation of Mechanical Properties of Al -7005/Red Mud and Phosphogypsum Hybrid Composites

In this work, an aluminum-based metal matrix composite has been manufactured. Then, its microstructure and mechanical properties, such as tensile strength, hardness, impact strength, and wear rate, have been studied. Additionally, a modest attempt has been made in the present work to create aluminum-based metal matrix composites (MMCs) with a reinforcing material to develop a traditional, low-cost technique for creating MMCs and achieving uniform dispersion of the reinforced material. The stir casting method has been utilized to accomplish this goal. Phosphogypsum with red mud and aluminum alloy (7005) have been selected as the matrix and reinforcing materials, respectively. The experiment was conducted using constant weight fractions of phosphogypsum (5%) and red mud (5%). The results showed that the addition of phosphogypsum and Red mud particles increased the hardness, tensile strength, and impact strength resistance of the specimen while decreasing the wear rate. On the other hand, combining the two materials (phosphgypsum and red mud) yielded better flexible results than adding each material separately.