Atomistic Simulation of the Explosion Welding Process

Abstract We study explosion welding process on the atomic level using molecular dynamics simulations. Our simulations show that jet formation—considered necessary for good bonding—is correlated with the instantaneous melting of the interface region. Moreover, we observe peeling off of material (up to 4 nm) from the bonded surfaces. Finally, the structure of the material immediately after the bonding process is observed to be nanocrystalline with crystal sizes of 10–20 nm.