A primary requirement in the avenue of B2s Fe-Mn-Al-Ni-C steels is to control the morphology of B2 precipitates in hot-rolled products where there are limited nucleation sites for a homogeneous distribution of B2 phase in FCC matrix. This is unlike the scenario in cold-rolled products where FCC GBs and shear bands act as heterogeneous nucleation sites for B2 precipitation. In particular, dynamic recovery and/or recrystallisation leading to high dislocation annihilation rate and large FCC grain sizes in hot-rolled products, limit the number of nucleation sites for precipitation of B2 phase. Recently, Zargaran et al. have used κ-carbide particles for promoting the nucleation of B2 precipitates (in FCC matrix)