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. 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, 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 1 h at 1150 °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 250 MPa for as‐clad strips to over 400 MPa. For the additionally annealed strips bonding strength decreases by approximately 40 MPa, while the lowest bonding strength has been measured for strips that have been annealed and not rolled. Clad steel strips produced by twin‐roll casting are hot rolled and annealed. The influence of these processing steps onto the clad strip and its bond is analyzed. It could be shown that hot rolling improves the bonding strength significantly in comparison to the as‐clad strip, while the chosen annealing strategy has a weakening effect on the bond.