Interfacial properties in steel–steel composite materials

Steel–steel composites comprising low carbon steel reinforced with eutectoid steel wire have been fabricated by rolling to simulate the character of dual-phase steels. The interfacial strength of these steel–steel composites and its influence on mechanical properties has been examined. Analysis based on the energy equilibrium that the work of interfacial shear fracture equals the total energy of the bonds broken during wire pull-out has been developed and shows that the interfacial strength is mainly affected by the distortion of the interface and carbon diffusion between matrix and wire.