Development of IF steel–Al multilayer composite by repetitive roll bonding and annealing process

The present study shows feasibility of synthesising steel–aluminium based metal intermetallic laminate (MIL) composites by an industrially viable and repetitive roll bonding process and subsequent annealing. Roll bonding process has been utilised to achieve solid state bonding of
interstitial free (IF) steel and aluminium with simultaneous reduction in sheet thickness. Further
annealing of roll bonded laminate sheets gives rise to IF steel–aluminides/aluminium multilayer composites. Formation of Al5Fe2 phase at the interface is confirmed by X-ray diffraction (XRD) analysis.