Eur. Phys. J. Special Topics 227, 17–27 (2018)
https://doi.org/10.1140/epjst/e2018-00114-9

Regular Article

Ti6Al4V-AA1050-AA2519 explosively-cladded plates under impact loading

¹ French-German Research Institute of Saint-Louis (ISL), 5 rue du Général Cassagnou, 68301 Saint-Louis, France
² Military University of Technology (WAT), ul. gen. S. Kaliskiego 2, 00-908 Warsaw, Poland

^a e-mail: teresa.fras@isl.eu

Received: 6 November 2017
Received in final form: 19 April 2018
Published online: 10 September 2018

Abstract

The aim of the study is to analyse perforation processes in explosively-cladded Ti6Al4V-AA1050-AA2519 plates impacted by fragment-simulating projectiles at velocity 500–750 m/s. A high strength titanium alloy is the striking face and a ductile aluminium alloy is the underlying, backing layer. The explosive welding may be an optimal technique of bonding of these two dissimilar metals without affecting their mechanical properties in a composite armour plate. The experimental observations of the plates deformation and failure are completed by a FEM simulation and a SEM fractography to analyse behaviour of such a layered metallic composite under impact loadings.