Aluminum-steel clad material prepared by twin-roll casting

Both steel and aluminum alloys rank among the most important structural materials due to their suitable properties in various applications and low material cost. Bonding of such dissimilar materials and formation of a composite material can lead to an effective combination of steel high strength and aluminum low density and corrosion resistance. Fabrication of aluminum-steel clad material by twin-roll casting leads to preparation of composite material whose properties are governed by the microstructure of intermetallic layer between aluminum and steel. Such layer formed after annealing at 500 °C for 16 hours by diffusion of iron atoms into aluminum.