Fracture behaviour of nickel-titanium laser welded joints

C. Maletta, A. Falvo, F. Furgiuele, G. Barbieri, M. Brandizzi

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Abstract

In this study, the effects of Nd:YAG laser welding on the fracture behavior of Ni-rich nickel-titanium sheets are analyzed by experimental investigations. The welding was carried out in open air conditions by using a special shielding/clamping system to avoid the chemical contamination of the molten zone and the formation of hot cracks. Mechanical tests of standard dog bone-shaped and single edge crack specimens were carried out to measure the stress-strain response and the fracture resistance of both the base and the welded materials. Furthermore, scanning electron microscopy observations of the fracture surfaces were carried out in order to better understand the failure mechanisms. Finally, systematic comparative studies between base and laser-welded materials were carried out. © 2009 ASM International.
Original languageEnglish
Pages (from-to)569 - 574
Number of pages6
JournalJournal of Materials Engineering and Performance
Volume18
Issue number5-6
DOIs
Publication statusPublished - Aug 2009
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Maletta, C., Falvo, A., Furgiuele, F., Barbieri, G., & Brandizzi, M. (2009). Fracture behaviour of nickel-titanium laser welded joints. Journal of Materials Engineering and Performance, 18(5-6), 569 - 574. https://doi.org/10.1007/s11665-009-9351-8