Due to the contradictory relationship between strength and toughness, many novel
structures have been designed to overcome the tradeoff dilemma. In this paper, pure copper
hetero grain composite laminates (HGCLs) composed of fine/coarse/fine grain bands were
fabricated via rolling bonding and annealing. Microstructure characterizations indicated the
grain size and hardness differences among different layers of HGCLs, and the interfaces
were well bonded. When compared to the tensile results of the reference specimen (non …