Multilayered Nb-Al composite manufactured by explosive welding

Abstract

Abstract. In this study, the multilayered composite materials consisting of niobium and aluminum foils were produced by explosive welding. The conducted microstructural studies with the use of scanning electron microscopy (SEM) have shown that the boundaries of welded seams have predominantly a wave structure with a partial local melting of interacting materials. At the niobium/aluminum boundary, in the mixing zones, micro volumes with a non-uniform chemical composition were presented. Mechanical tests have shown that the strength properties, as well as the toughness of composite materials, are at an intermediate level relative to the initial materials.

Microstructural Characterization of Nb/Inconel 601 Interface Obtained in the Explosive Welding Process

“…In addition, the grains from niobium exhibited a much larger size than those from the remelted phase. The same situation was observed when niobium was explosively welded with alloys containing aluminum (Palmer et al, 2006;Maliutina et al, 2017). On the other hand, thick and elongated grains of single-phase austenitic nickel (γ) with dispersed particles of other elements, included in Inconel 601 overall microstructure, were also reported in Sarvghad et al (2017).…”