Kinetics of the collision of metallic plates in a multilayer packet during explosion welding

Abstract

The achievement of high strength in the compounding of metallic plates in layered composite material (LCM) during explosion welding (EW) in accordance with the {open_quotes}simultaneous{close_quotes} scheme requires strict and precise dosing of energy input on all of its interlayer boundaries, which can be achieved through the creation of specific conditions, during each act of collision in the packet, characterized by the properties of the metals being combined and by the kinematic parameters of the EW, the most important of which are usually considered to be the collision speeds V{sub l} of the layers. However, the task of the computational evaluation of the layer collision speeds in a multilayer packet corresponding to the actual physical picture of the process, in view of the complexity and transience of the phenomena occurring during welding, remains at present unsolved in many of its aspects. The present article investigates the true character of kinetics of the layer-by-layer collision of metal plates in a multi-layer packet during its explosive welding in accordance with the {open_quotes}simultaneous{close_quotes} scheme, which is frequently used in practice. In order to test the adequacy of the proposed kinematic model, a series of experiments in the EW of multilayer model composites was carriedmore » out in accordance with an improved method.« less