Article Dans Une Revue Defence Technology Année : 2025

Magnetic pulse welding of Al-5754 with Al-7075 and MARS 380: Weldability windows and ballistic testing

Résumé

Joining dissimilar materials encounters significant engineering challenges due to the contrast in material properties that makes conventional welding not feasible. Magnetic Pulse Welding (MPW) offers a solid-state joining technique that overcomes these issues by using impact to create strong bonds without melting the substrate materials. This study investigates the weldability of aluminum alloy Al-5754 with Al-7075 and MARS 380 steel, used in armouring solutions of defense systems, by the use of MPW. In this work, weldability windows are investigated by varying standoff distances between the coating material and its substrate (0.25-4.5 mm) and discharge energies (5-13 kJ) with both O-shape and U-shape inductors. Mechanical strength of the welded joints were assessed through single lap shear tests, identifying optimal welding parameters. Then, the velocity profiles of the flyer plates were measured using heterodyne velocimetry to understand the dynamics of the impact. Then, substructures assembled with the optimal welding conditions were subjected to ballistic testing using 7.62×51 mm NATO and 9×19 mm Parabellum munitions to evaluate the resilience of the welds under ballistic impact. The outcomes demonstrate that MPW effectively joins Al-5754 with both Al-7075 and MARS 380, producing robust welds capable of withstanding ballistic impacts under certain conditions. This research advances the application of MPW in lightweight ballistic protection of defense systems, contributing to the development of more resilient and lighter protective structures.

Fichier principal
Vignette du fichier
1-s2.0-S2214914725002430-main.pdf (17.67 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-05316548 , version 1 (16-10-2025)

Licence

Identifiants

Citer

Benoit Lagain, Thomas Heuzé, Guillaume Racineux, Michel Arrigoni. Magnetic pulse welding of Al-5754 with Al-7075 and MARS 380: Weldability windows and ballistic testing. Defence Technology, 2025, ⟨10.1016/j.dt.2025.07.024⟩. ⟨hal-05316548⟩
274 Consultations
58 Téléchargements

Altmetric

Partager

  • More