Study of dissimilar metallic assembly through friction stir welding & friction melt bonding

Dimov, Nicolas;Sapanathan, Thaneshan;Charkaluk, Eric;Simar, Aude;Benoist, Julien
(2019) 6th International Conference on Scientific and Technical Advances on Friction stir Welding & Processing (FSWP’2019) — Location: Louvain la neuve (11.September.2019)

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Authors
  • Dimov, NicolasUCLouvain
    Author
  • Sapanathan, Thaneshanorcid-logoUCLouvain
    Author
  • Charkaluk, EricEcole polytechnique, Palaiseau
    Author
  • Simar, Audeorcid-logoUCLouvain
    Author
  • Benoist, JulienThales Global Services
    Author
Abstract
Over the last two decades, research on FSW has been carried out mainly for aluminium and other “soft” metals such as zinc, magnesium and eventually in copper alloys. FSW of titanium or titanium alloys, stainless steel and nickel based alloys have revealed certain challenges, especially in term of cost and durability of the tool. Likewise, assembly of dissimilar metals (e.g. Ti/Al, Fe/Al) has also been challenging, while having difference in the coefficient of thermal expansion and melting temperature. Dissimilar joints also prone to the formation of hot tears and presence of brittle intermetallics; they are detrimental to the joints. A new process called “Friction Melt Bonding”, carried out using a simple flat faced tool, offers interesting capabilities to control intermetallic formation. This franco-belgian CIFRE PhD aims to compare both welding technique (FSW and FMB): microstructures, mechanical properties, design limitations, process parameters and cost for Ti-6Al-4V/Al 6061-T6 and 316L/Al 6061-T6 joints.
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Citations

Dimov, N., Sapanathan, T., Charkaluk, E., Simar, A., & Benoist, J. (2019). Study of dissimilar metallic assembly through friction stir welding & friction melt bonding. 6th International Conference on Scientific and Technical Advances on Friction stir Welding & Processing (FSWP’2019), Louvain la neuve. https://hdl.handle.net/2078.5/114413