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An anomalous wave formation at the Al/Cu interface during magnetic pulse welding

Li J. S., Raoelison R. N., Sapanathan T., Zhang Zhan, Chen X-Grant, Marceau Daniel, Hou Y. L. et Rachik M.. (2020). An anomalous wave formation at the Al/Cu interface during magnetic pulse welding. Applied Physics Letters, 116, (161601),

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URL officielle: http://dx.doi.org/doi:10.1063/5.0005299

Résumé

This paper reports an anomalous wave formation at an Al/Cu bimetallic interface produced by magnetic pulse welding. The mechanism of the anomalous wave formation is investigated using both metallurgical characterization and the interface kinematics. It reveals that the anomalous wave is formed with the combination of the intermediate zone and the interdiffusion zone with a thickness of 70 nm, wherein the intermediate zone is caused by the local melting due to the high shear instability, and the interdiffusion zone is formed below the melting point of aluminum combined with ultrahigh heating and cooling rates of about 1013 °C s−1. A multiphysics simulation of impact welding has been performed, and it is identified that the jetting kinematics and non-uniform distribution of shear strains during high-speed collision enable the formation of the anomalous wave. The numerical and experimental results comprehensively lead to understanding of the mechanism and the characteristics of the anomalous wave produced during an impact welding. This work is supported by the Co-operation Program of UTs and INSAs (France) and funded by the China Scholarship Council (No.201701810138). T. Sapanathan acknowledges F.R.S–FNRS (Belgium) during his postdoc at UCLouvain. The data that support the findings of this study are available from the corresponding author upon reasonable request.

Type de document:Article publié dans une revue avec comité d'évaluation
Volume:116
Numéro:161601
Version évaluée par les pairs:Oui
Date:Mars 2020
Sujets:Sciences naturelles et génie > Génie
Sciences naturelles et génie > Génie > Génie des matériaux et génie métallurgique
Sciences naturelles et génie > Sciences appliquées
Département, module, service et unité de recherche:Départements et modules > Département des sciences appliquées > Module d'ingénierie
Mots-clés:Formation, ondes anormales, AL/CU, soudage, impulsion magnétique
Déposé le:02 sept. 2020 22:48
Dernière modification:02 sept. 2020 22:48
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