It is worth highlighting that only the tensile ) and compressive properties of B2s Fe-Mn-Al-Ni-C steels have been studied so far. Although, Park et al. ) have discussed the influence of B2 morphology on the formability of these steels, however, structural properties critical for industrial applications such as fracture and fatigue properties, and mechanical anisotropy have not been investigated till date. The other industrial challenge correlation. However, in the context of B2s Fe-Mn-Al-Ni-C steels, there is hardly any correlative microstructural investigation till date. In terms of addressing the fundamental challenges, especially associated with (i) the characterisation of FCC/B2 interfaces (discussed in section 5.1), (ii) influence of B2 precipitate composition and morphology on the strain hardening behaviour of B2s Fe-Mn-Al-Ni-C steels (discussed in section 5.1), and (iii)