Processing of Clad Steel Strips Consisting of a High Manganese and Stainless Steel Pairing Produced by Twin-Roll Casting

Increasing popularity of clad metals leads to a higher demand.([1]) To increase productivity and reduce production costs in comparison to established production routes, the production of clad steel strips by means of twin-roll casting is investigated. After first successful trials,([2]) the influence of downstream treatment on the bond within clad steel strips consisting of a stainless steel (X5CrNi18-10) cladding strip and a high manganese (Fe-17Mn-0.6C-1.5Al) cast strip produced by twin-roll casting is investigated in the present study. After hot rolling of the strips with a reduction of 20% and annealing for 1h at 1150 degrees C, the bonding interface for three different conditions - rolled, annealed, as well as rolled and annealed - is examined and the bonding strength is determined qualitatively and quantitatively. The obtained results are then compared to previously obtained results with as-clad strips. The highest bonding strength is found in the hot rolled strips. It rises from an average of 250MPa for as-clad strips to over 400MPa. For the additionally annealed strips bonding strength decreases by approximately 40MPa, while the lowest bonding strength has been measured for strips that have been annealed and not rolled.