J. Pilch

TL;DR: In this article, the role of dislocation slip in superelastic deformation of thin Ni-Ti wires containing various nanograined microstructures was investigated by tensile cyclic loading with in situ evaluation of electric resistivity.

TL;DR: In this article, the authors investigated the evolution of microstructure and functional superelastic properties of Ni-Ti wires subjected to a non-conventional heat treatment by controlled electric pulse currents.

TL;DR: In this paper, the instability of cyclic tensile superelastic behavior of NiTi polycrystal is investigated by high-resolution in situ synchrotron X-ray diffraction method, and it is found that cyclic instability is due to the gradual redistribution of internal stresses originating from the accumulation of incremental plastic strains accompanying the stress induced martensitic transformation in constrained polycrystalline environment.

TL;DR: Three-dimensional synchrotron x-ray diffraction was used to image at micrometer-scale resolution the grain-resolved elastic strains and stresses in austenite around one such front in a prestrained nickel-titanium wire and found that the local stresses in Austenite grains are modified ahead of the nose cone–shaped buried interface where the martensitic transformation begins.

TL;DR: In this paper, a model for the plasticity coupling between martensitic transformation and plastic deformation is presented based on the mathematical theory of microstructures and the crystal plasticity theory.