| Abstract: | A hot‐rolled TRIP steel with a tensile strength level above 800 MPa and an excellent fatigue behaviour has been developed with the purpose of satisfying the increasing demands of the automotive industry. Nb was added to the steel to guarantee a stable process and to make the production of the steel possible in a conventional rolling mill. The formation of red scale and the surface quality problems that arise from it have been studied. Additionally, hot torsion tests have been performed in order to validate a new route that could avoid the formation of this red scale allowing the application of the steel for exposed parts (e.g. wheel sector). |
