Fracture mechanics of pseudoelastic NiTi alloys: review of the research activities carried out at University of Calabria

C. Maletta, F. Furgiuele, E. Sgambitterra


This paper reports a brief review of the research activities on fracture mechanics of nickel-titaniumbased shape memory alloys carried out at University of Calabria. In fact, this class of metallic alloys show aunusual fracture response due to the reversible stress-induced and thermally phase transition mechanismsoccurring in the crack tip region as a consequence of the highly localized stresses. The paper illustrates the mainresults concerning numerical, analytical and experimental research activities carried out by using commercialNiTi based pseudoelastic alloys. Furthermore, the effect of several thermo-mechanical loading conditions onthe fracture properties of NiTi alloys are illustrated.

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