Spray forming is a flexible materials casting technique capable of producing high value added products in the form of round billets, clad rolls and composite tubes of high-alloyed materials including alloy systems that often cannot be manufactured by conventional casting methods. However, one of the key challenges associated with the spray forming of dissimilar materials is to achieve high integrity metallurgical bonding between the interface of the deposit and substrate material. The proposed research is to study quantitatively the key factors that govern interface adhesion integrity in dissimilar metallic alloys during spraying using neutron diffraction/strain mapping. Knowledge from this investigation will help to accelerate the collaborative research programme to develop high performance bi-metallic components targeted for the metallurgical, oil and off-shore renewable industries.