Friction stir welding of thin DH36 steel plate

Norman McPherson, Alexander Galloway, Stephen R. Cater, S.J. Hambling

Research output: Contribution to journalArticle

33 Citations (Scopus)
133 Downloads (Pure)

Abstract

A series of 4, 6 and 8 mm DH36 steel welds were produced using optimum conditions for friction stir welding (FSW). Comparator welds in the same thickness from the same plates were produced using a single sided single pass process submerged arc welds (SAW). This work was carried out to evaluate the mechanical properties of FSW material with a view to its possible application in a
shipbuilding production process route.
Overall, the performance of the FSW material was superior to the SAW comparators. Areas such as distortion and fatigue were particularly positive in the FSW material. An 8 mm thick plate was also produced using two FSW passes, one from either side, and it was found to have superior toughness and fatigue performance when compared to the single sided 8 mm FSW material.
Some of these benefits are thought to have originated from the internal overlap zone between the two passes.
Original languageEnglish
Pages (from-to)441-450
Number of pages10
JournalScience and Technology of Welding and Joining
Volume18
Issue number5
DOIs
Publication statusPublished - Jun 2013

Keywords

  • friction stir welding
  • DH36 steel
  • toughness
  • fatigue
  • distortion

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