Jet composition in magnetic pulse welding: Al-Al and Al-Mg couples

A. Stern, O. Becher, M. Nahmany, D. Ashkenazi, V. Shribman

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

Magnetic pulse welding (MPW) produces a mechanically induced essentially solid state but partially fusion-type weld, with an extremely small fusion zone and extremely high cooling rates. Composition of material jet emission in MPW was investigated for similar and dissimilar metal lap joints. The jet residues emitted from Al/Al and Al/Mg lap joints were collected and characterized, and their composition was mi-croanalyzed by scanning electron microscopy with energy-dispersive spectometry (SEM-EDS). The composition of the jet remains was governed by the degree of relative density difference between the two metal components. The metal jet emitted during Al/Mg welding was mainly composed of Mg, the metal component with lower density. The approximate thickness of the layers, peeled during the MPW process, was calculated; an average thickness of 15 urn was found for the Al-Al couple and for Al-Mg couples the values were about 10 p.m.

Original languageEnglish
Pages (from-to)257s-264s
JournalWelding Journal
Volume94
Issue number8
StatePublished - 1 Aug 2015

Keywords

  • AI-AI couple
  • Al-Mg couple
  • Jet material composition
  • Magnetic pulse welding

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