My project looks at establishing the feasibility of in-situ TiB2, NbB2 and VB2 particles within a ductile steel matrix. Using vacuum induction melting (VIM) and field-assisted sintering technology (FAST) coupled with a single-stage thermomechanical process, microstructural characterisation can be carried out to investigate and compare the different processing routes. It is therefore possible to create high-modulus steel allowing for lightweight automotive component design. TiB2 in particular is a common precipitation strengthening mechanism; however, there is sparse research on the investigation of using FAST to develop in-situ steel metallic matrix composites (SMC) for automotive components. Microalloying elements (Ti, Nb and V) will also be analysed through experimental work; as the pinning effect of carbide precipitates, without boride reinforcement, needs to be determined. The target is to achieve suitable precipitation-hardened ferritic-pearlitic (PHFP) steel with high stiffness and low density to allow for improvements in the performance and fuel efficiency of Volkswagen vehicles through weight reduction.