Abstract
Two kinds of aluminum base composites, wire-reinforced and multilayered with stainless-steel wire meshes and foils as the reinforcements have been fabricated by means of explosive welding. Explosive welding in a low vacuum with “middle” and “base” plate inserts was examined to solve such problems as poor-bonding and local fracture of the composite constituents. Good bonding was then attained without forming voids or cracks. Electron-probe micro-analysis also revealed no evidence of diffusion of the constitutive elements across the interface. The bonding mechanism of multilayered composites was the same as in the common explosive welding, whereas that of wire-reinforced composites could be attributed to cold pressure welding of the matrix metal extruded through the mesh apertures. The UTS values of the wirereinforced composites were slightly lower than those expected from the so-called rule of mixtures (ROM). Multilayered composites, on the other hand, showed reasonable UTS values compared with ROM predictions. These composites also showed high ductility.
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