Wave formation process upon explosive welding: electron microscopic observations and imitating experiments

TL;DR

This paper investigates the formation of wave-like structures at the interface during explosive welding through electron microscopy, imaging, and simulation experiments to understand the self-organization processes involved.

Contribution

It provides new insights into the interface transition states and the self-organization mechanisms of splashes into wave surfaces during explosive welding.

Findings

Identification of cusp-like splash structures

Observation of self-organization into wave surfaces

Detection of interface heterogeneity and bending

Abstract

A sequence of the interface transition states was investigated. A transition state has been found, during which cusps look like splashes. Images of the splashes for different joints have been obtained. The processes of self-organization of the splashes into a quasi-wave surface and a perfect wavy surface have been revealed. Simulations experiments have been conducted. Heterogeneity and the interface bending of one of the contacting materials have been detected. They imitate the heterogeneity on the interface arising upon explosive welding.