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Microstructure characterisation of electromagnetic pulse welded high-strength aluminium alloys

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posted on 2024-02-20, 15:26 authored by Mason Shipley-JonesMason Shipley-Jones, Zaidao Li, Stuart RobertsonStuart Robertson, Mark JepsonMark Jepson, Carla Barbatti, Simon HoggSimon Hogg

Electromagnetic pulse welding is a high-velocity impact joining process employed with the intention of forming fast and effective solid-state bonds. Electron microscopy techniques, including SEM and TEM, revealed that bonding was not fully accomplished in the solid state; instead, local melting can occur. These locally melted areas likely occur around the point of first contact during the welding process and are associated with a debonded region that runs alongside or through the centre of melted zones. Microstructural characterisation showed dispersoid-free regions, columnar grains, epitaxial growth, and localised increases in O, Fe, Si, and Mn content in locally melted areas. This region contrasts with the solid-state bonded region, in which the interface exhibited sub-micron grains.

Funding

DTP 2018-19 Loughborough University

Engineering and Physical Sciences Research Council

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History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Materials

Published in

Science and Technology of Welding and Joining

Publisher

Sage

Version

  • AM (Accepted Manuscript)

Rights holder

© The Author(s)

Publisher statement

This paper was accepted for publication in the journal Science and Technology of Welding and Joining and the definitive published version is available at https://doi.org/10.1177/13621718231213593. Users who receive access to an article through a repository are reminded that the article is protected by copyright and reuse is restricted to non-commercial and no derivative uses. Users may also download and save a local copy of an article accessed in an institutional repository for the user's personal reference. For permission to reuse an article, please follow our Process for Requesting Permission: https://us.sagepub.com/en-us/nam/process-for-requesting-permission

Acceptance date

2023-10-25

Publication date

2024-01-31

Copyright date

2024

ISSN

1362-1718

eISSN

1743-2936

Language

  • en

Depositor

Dr Simon Hogg. Deposit date: 30 October 2023

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