Microstructure and Mechanical Properties of Al6060/TiB2 Aluminum Matrix Composites Produced via Ultrasonically Assisted Stir Casting and Radial-Shear Rolling
Abishkenov M. Tavshanov I. Lutchenko N. Nogayev K. Ashkeyev Z. Kulidan S.
September 2025Multidisciplinary Digital Publishing Institute (MDPI)
Journal of Manufacturing and Materials Processing
2025#9Issue 9
Lightweight aluminum matrix composites with superior strength and structural integrity are in high demand for next-generation transportation and aerospace applications. In this work, Al6060-based composites reinforced with ≈2 wt.% TiB2 were produced using a hybrid processing route that combines ultrasonically assisted stir casting with radial-shear rolling (RSR). This strategy enabled uniform particle dispersion, strong matrix–reinforcement bonding, and substantial microstructural refinement (grain size 4–6 μm) with reduced porosity. Consequently, the Al6060/TiB2 composites demonstrated substantial gains over the as-cast alloy, combining a yield strength of 108.6 MPa, ultimate tensile strength of 156.9 MPa, and microhardness of 76.3 HV0.2 with a balanced ductility of ~9%. The demonstrated synergy of ultrasound-assisted casting and severe plastic deformation highlights a scalable pathway for fabricating high-performance aluminum composites, positioning them as promising candidates for aerospace, automotive, and other advanced engineering sectors.
Al6060 alloy , aluminum matrix composites (AMCs) , mechanical properties , microstructure evolution , radial shear rolling (RSR) , TiB2 reinforcement , ultrasonically assisted stir casting
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Department of Technological Machines and Transportation, Karaganda Industrial University, Temirtau, 101400, Kazakhstan
Core Facilities—Office the Provost, Nazarbayev University, Astana, 010000, Kazakhstan
Department of Technological Machines and Transportation
Core Facilities—Office the Provost
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