Experimental study of Cu/Fe underwater self-constrained explosive welding tube

Abstract

In this study, copper/steel composite tubes were produced by an underwater explosive welding process. Scanning electron microscopy, energy dispersive spectroscopy, electron backscatter diffraction and hardness tests were performed to analyse the microstructure and properties of the composite tubes. It was shown that by using an aqueous medium as a constraint, the inner tube cladding surface could be protected, shape distortion was reduced and the stringent requirements on the outer steel die were reduced. The results show that the copper/steel bond interface has a high-strength fine grain layer and that work hardening occurs near the interface after tube lamination.

Spinodal liquid phase separation enabling dissimilar resistance spot welding of immiscible iron and copper alloy system

“…solid-state welding mechanism), for example, diffusion welding [14]. friction welding [15], friction stir welding [16,17] and explosive welding [18]. Metallurgical joining via formation of a liquid/liquid interface between Fe/Cu (i.e.…”

“…solid-state welding mechanism), for example, diffusion welding [14]. friction welding [15], friction stir welding [16,17] and explosive welding [18].…”