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Improved process stability during friction stir welding of 5 cm thick copper canisters through shoulder geometry and parameter studies
University of Kalmar, School of Pure and Applied Natural Sciences.ORCID iD: 0000-0001-9382-9296
2009 (English)In: Science and technology of welding and joining, ISSN 1362-1718, E-ISSN 1743-2936, Vol. 14, no 2, p. 178-184Article in journal (Refereed) Published
Abstract [en]

The spent nuclear fuel from Swedish power plants will be placed in copper canisters that are sealed with friction stir welding and the stability and robustness of this process is now being optimised in three steps: first, the shoulder geometry was identified that produced the most stable weld cycle, then the welding parameters were optimised for that geometry with regards to stability, and finally, the chosen geometry and welding parameters were verified and evaluated during multiple weld cycles. The shoulder study showed that stable welds could be produced repeatedly with a convex scroll geometry which proved more stable than various concave and flat scroll geometries. In the subsequent parameter study, not only were the most stable values for the welding parameters derived, but a clear relationship was shown between power input and tool temperature. This relationship can be used to more accurately control the process within the parameter windows, not only for this application but for other applications where the welding temperature needs to be kept within a specified range. Similarly, the potential of the convex scroll shoulder geometry for use in applications with other metals and thicknesses is evident.

Place, publisher, year, edition, pages
London: Institute of Materials , 2009. Vol. 14, no 2, p. 178-184
Keywords [en]
Friction stir welding, Copper, Heat input, Design of experiments
National Category
Environmental Sciences
Research subject
Environmental Science, Environmental Chemistry
Identifiers
URN: urn:nbn:se:hik:diva-1569DOI: 10.1179/136217109X400420OAI: oai:DiVA.org:hik-1569DiVA, id: diva2:214081
Available from: 2009-05-01 Created: 2009-05-01 Last updated: 2017-12-13Bibliographically approved

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Öberg, Tomas

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf