On the coupling between martensitic transformation and plasticity in NiTi: Experiments and continuum based modelling
Recent macroscopic experimental and theoretical evidence on the stress-strain-temperature
behavior of NiTi beyond the strain recoverability limits (large strain, high stress, high …
behavior of NiTi beyond the strain recoverability limits (large strain, high stress, high …
Superelastic and robust NiTi alloys with hierarchical microstructures by laser powder bed fusion
Nickel-titanium (NiTi) alloys perform large recoverable deformation and can be produced
into sophisticated and customized components through additive manufacturing (AM) …
into sophisticated and customized components through additive manufacturing (AM) …
Effects of texture on the functional and structural fatigue of a NiTi shape memory alloy
The effects of crystallographic texture on the fatigue performance of superelastic NiTi sheet
were investigated to assess the evolution of plastic deformation and transformation stress …
were investigated to assess the evolution of plastic deformation and transformation stress …
In situ, 3D characterization of the deformation mechanics of a superelastic NiTi shape memory alloy single crystal under multiscale constraint
Microstructural elements in NiTi shape memory alloys (SMAs)–precipitates, phase
boundaries, inclusions, grain boundaries–can be viewed as sources of multiscale constraint …
boundaries, inclusions, grain boundaries–can be viewed as sources of multiscale constraint …
Influences of granular constraints and surface effects on the heterogeneity of elastic, superelastic, and plastic responses of polycrystalline shape memory alloys
Deformation heterogeneities at the microstructural length-scale developed in polycrystalline
shape memory alloys (SMAs) during superelastic loading are studied using both …
shape memory alloys (SMAs) during superelastic loading are studied using both …
3D in-situ characterization of dislocation density in nickel-titanium shape memory alloys using high-energy diffraction microscopy
Functional fatigue—changes to the material response during cyclic loading—is a major
barrier to the cycle lifetime demands of shape memory alloy technologies. Functional fatigue …
barrier to the cycle lifetime demands of shape memory alloy technologies. Functional fatigue …
Modeling the pseudoelastic design space of NiTi fabricated by laser powder bed fusion
N Zeleznik, A Hinojos, X Gao, M Nematollahi… - Additive …, 2023 - Elsevier
This work explores the underlying origins for an experimentally-observed correlation
between the cyclic pseudoelastic response of Ni 50.8 Ti 49.2 and the hatch spacing used in …
between the cyclic pseudoelastic response of Ni 50.8 Ti 49.2 and the hatch spacing used in …
In situ neutron diffraction studies of large monotonic deformations of superelastic nitinol
Superelastic Nitinol micromechanics are studied well into plastic deformation regimes using
neutron diffraction. Insights are made into the nature of initial transformation, bulk …
neutron diffraction. Insights are made into the nature of initial transformation, bulk …
A crystal plasticity-based study of the relationship between microstructure and ultra-high-cycle fatigue life in nickel titanium alloys
Abstract Nickel Titanium (NiTi) alloys are often used in biomedical devices where failure due
to mechanical fatigue is common. For other alloy systems, computational models have …
to mechanical fatigue is common. For other alloy systems, computational models have …
A micromechanics-inspired constitutive model for shape-memory alloys that accounts for initiation and saturation of phase transformation
A Kelly, AP Stebner, K Bhattacharya - Journal of the Mechanics and Physics …, 2016 - Elsevier
A constitutive model to describe macroscopic elastic and transformation behaviors of
polycrystalline shape-memory alloys is formulated using an internal variable thermodynamic …
polycrystalline shape-memory alloys is formulated using an internal variable thermodynamic …