Shape memory alloys and polymers for MEMS/NEMS applications: Review on recent findings and challenges in design, preparation, and characterization

I Stachiv, E Alarcon, M Lamac - Metals, 2021 - mdpi.com
Rapid progress in material science and nanotechnology has led to the development of the
shape memory alloys (SMA) and the shape memory polymers (SMP) based functional …

Kwinking as the plastic forming mechanism of B19′ NiTi martensite

H Seiner, P Sedlák, M Frost, P Šittner - International Journal of Plasticity, 2023 - Elsevier
Irreversible plastic forming of B19′ martensite of the NiTi shape memory alloy is discussed
within the framework of continuum mechanics. It is suggested that the main mechanism …

Functional fatigue of superelasticity and elastocaloric effect for NiTi springs

Q Kan, Y Zhang, W Shi, Y Xu, C Yu, G Kang - International Journal of …, 2024 - Elsevier
In this work, the evolutions of superelasticity (SE) and elastocaloric effect (eCE) for NiTi
shape memory alloy (SMA) helical springs under cyclic deformation are investigated …

Superelasticity degradation of NiTi shape memory alloy in wide ranges of temperature and loading level: Experimental observation and micromechanical constitutive …

D Song, C Yu, C Zhang, G Kang - International Journal of Plasticity, 2023 - Elsevier
In this work, cyclic tension-unloading tests with different peak strains (10%-18%) in the
temperature range from 313 K to 393 K are performed to investigate the effects of …

Tension-compression asymmetric functional degeneration of super-elastic NiTi shape memory alloy: Experimental observation and multiscale constitutive model

Q Kan, Y Zhang, Y Xu, G Kang, C Yu - International Journal of Solids and …, 2023 - Elsevier
The functional degeneration of super-elastic NiTi shape memory alloy (SMA) rods is
investigated in the cyclic tension-unloading and compression-unloading experiments. The …

Solid-state cooling with high elastocaloric strength and low driving force via NiTi shape memory alloy helical springs: Experiment and theoretical model

Y Zhang, C Yu, D Song, Y Zhu, Q Kan, G Kang - Mechanics of Materials, 2023 - Elsevier
High efficiency and environment-friendly elastocaloric solid-state cooling has emerged as a
promising alternative to traditional vapor-compression refrigeration. Owing to the high …

A micromechanical constitutive model of high-temperature shape memory alloys

Q Kan, W Shi, D Song, C Yu, G Kang - International Journal of Mechanical …, 2023 - Elsevier
In this work, a new micromechanical constitutive model is constructed for high-temperature
shape memory alloys. Different from the classical constitutive models, the microstructural …

[HTML][HTML] Cyclic degeneration of elastocaloric effect for NiTi shape memory alloy: Experimental observation and constitutive model

Y Zhang, G Kang, H Miao, C Yu - International Journal of Solids and …, 2022 - Elsevier
Based on the cyclic tension-unloading tests with various peak strains (4%-12%), the effect of
loading level on the cyclic deformation and evolution of elastocaloric effect (eCE) for NiTi …

Spatial and temporal evolution of localized deformation in NiTi tubes in a constant stress thermal cycle: Experiments and analysis

S Tsimpoukis, S Kyriakides, CM Landis - International Journal of Plasticity, 2023 - Elsevier
A novel experimental setup is presented that allows for precise control of thermal and
mechanical loads, and simultaneous monitoring of the temperature and the full-field …

A multi-scale diffusional-mechanically coupled model for super-elastic NiTi shape memory alloy wires in hydrogen-rich environment

C Yu, HM Jiang, D Song, Y Zhu, G Kang - International Journal of Plasticity, 2023 - Elsevier
The functional devices made by NiTi shape memory alloys (SMAs) are often serviced in
hydrogen (H)-rich environment. Recently experimental results showed that the martensite …