Characterization of transformation localization during pseudoelastic cycling of NiTi

Olbricht, J.; Schäfer, A.; Wagner, M.F.-X.; Eggeler, G.

doi:10.1361/cp2007smst047

Characterization of transformation localization during pseudoelastic cycling of NiTi (bibtex)

by J. Olbricht, A. Schäfer, M.F.-X. Wagner, G. Eggeler

Abstract:

Pseudoelastic deformation of NiTi shape memory alloys is associated with the stress-induced formation of martensite. For NiTi wires and ribbons, the formation and propagation of transformation fronts has been described in the literature. The localization of transformation is closely related to the nature of functional fatigue during cyclic loading. In this contribution, we show how stress induced transformations start with the propagation of a single transformation front, and, during mechanical cycling, gradually evolve into a more homogeneous type of transformation related to the simultaneous propagation of multiple transformation fronts.

Reference:

Olbricht, J., Schäfer, A., Wagner, M.F.-X., Eggeler, G.: Characterization of transformation localization during pseudoelastic cycling of NiTi, Proc. of SMST 2007, 47-54.

Bibtex Entry:

@InProceedings{Olbricht,
  Title                    = {{Characterization of transformation localization during pseudoelastic cycling of {NiTi}}},
  Author                   = {Olbricht, J. and Sch\"{a}fer, A. and Wagner, M.F.-X. and Eggeler, G.},
  Booktitle                = {Proc. of SMST 2007},
  Year                     = {2007},

  Address                  = {Tsukuba, Japan},
  Pages                    = {47--54},

  Abstract                 = {Pseudoelastic deformation of NiTi shape memory alloys is associated with the stress-induced formation of martensite. For NiTi wires and ribbons, the formation and propagation of transformation fronts has been described in the literature. The localization of transformation is closely related to the nature of functional fatigue during cyclic loading. In this contribution, we show how stress induced transformations start with the propagation of a single transformation front, and, during mechanical cycling, gradually evolve into a more homogeneous type of transformation related to the simultaneous propagation of multiple transformation fronts.},
  Doi                      = {10.1361/cp2007smst047}
}