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Joining in Car Body Engineering
ArcelorMittal presents welding solutions to counter LME in 3rd generation AHSS at Joining in Car Body Engineering 2021
In a new paper to be presented at the Joining in Car Body Engineering 2021 conference, Thomas Dupuy from ArcelorMittal's Global R&D will outline how several partial solutions can be combined to reduce Liquid Metal Embrittlement (LME). These include changing the electrode tip geometry and other welding process solutions.
This sample, without surface cracking, was obtained using new electrode tip geometry
Industrialization of the latest 3rd generation advanced high strength steels (AHSS) has revealed that LME can occur during resistance spot welding. LME can lead to surface cracks in spot welds. Although studies have found that the LME cracks have limited impact on spot weld performance, most OEMs want to ensure they do not appear.
A sample showing surface cracks
About Car Body Engineering 2021
Joining in Car Body Engineering 2021 is a global virtual conference that runs from 19 to 22 April 2021. Due to the pandemic, both conferences Joining in Car Body Engineering Europe, traditionally taking place in Bad Nauheim (Germany), and Joining in Car Body Engineering "North America", usually taking place in Detroit (USA) will take place during the same week this year.
The presentation by Thomas Dupuy will take place on Thursday 22 April 2021 at 10.30 (CEST – UTC+2). All registered delegates are invited to attend.
Thomas Dupuy, head of the Welding team at ArcelorMittal Global R&D, based in Maizières (France)
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