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Large diameter rods of Cu-Al-Mn shape memory alloy were gas tungsten arc welded. The microstructural evolution was studied by electron microscopy techniques and its impact on the mechanical and functional response of the welded joints was assessed. The fusion zone exhibited a mixture of α and β phases, while the base material was composed only by the parent β phase. The refined grain structure of the fusion zone increased the material ductility and can improve the functional fatigue resistance of the welded joint when compared to the original base material.

Original languageEnglish
Pages (from-to)93-100
Number of pages8
JournalJournal Of Materials Processing Technology
Publication statusPublished - 1 Sep 2019


  • Characterization
  • Functional fatigue
  • Phase transformations
  • Shape memory alloys
  • Superelasticity
  • Welding


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