Sustainable processing of recycled aluminium alloy hybrid composites with Si3N4 and MoS2 reinforcements for lightweight applications

The growing need for lightweight, high-performance materials has intensified the focus on recycling aluminium alloys from industrial scrap. Nevertheless, obtaining sufficient mechanical and corrosion characteristics from recycled alloys continues to pose a significant challenge. This study involved the synthesis of an Al–Zn–Mg–Cu alloy utilising elements sourced from scrap, which was then reinforced with different proportions of silicon nitride (Si3N4) and molybdenum disulfide (MoS2) to improve its structural, corrosion, and tribological performance. The composites were fabricated using squeeze casting, exerting an instantaneous pressure of 150 MPa on the molten metal to ensure homogeneous dispersion and…