A new distributed cooling method for mitigating residual stress in friction stir welding

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Abstract

An analytical and Finite Element investigation of the effect of different cryogenic cooling nozzle configurations on temperature and residual stress in a model friction stir weld is presented. A new configuration adopting a distributed cooling approach is proposed based on an analytical cooling model. Finite element models are implemented to verify the effect of distributed cooling on welding temperature and longitudinal residual stress. The results presented indicate that new active cooling methods can improve mitigation of welding induced residual stress.
Original languageEnglish
Number of pages24
JournalProceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture
Early online date25 Mar 2015
DOIs
Publication statusPublished - 2015

Keywords

  • distributed cooling
  • active cooling
  • friction stir welding
  • finite element analysis (FEA)

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