Microstructure, cold workability and strain hardening behavior of trimodaled AA 6061-TiO2 nanocomposite prepared by mechanical alloying

► Trimodaled composites consisting of UFG and CG matrix phases and ceramic phase were produced successfully. ► Cold deformation behavior was investigated. ► The 15% CG trimodaled composite yielded a high compressive strength of 935 MPa. ► The 30% CG composite exhibited higher ductility while maintaining strength and toughness.