The material used for this study was Al–Si-coated 22MnB5,
which is manufactured by ArcelorMittal with a sheet thickness 1.7 mm. Its chemical composition (wt%) and mechanical properties are listed in Tables 1 and 2, respectively. The microstructure of the
as-delivered Al–Si-coated 22MnB5 steel is presented in Fig. 1.
It can be clearly seen in Fig. 1 that the material had a ferriticpearlitic microstructure in the as-delivered condition.