Functional fatigue of NiTi shape memory alloy: effect of loading frequency and source of residual strains

R Sidharth, ASK Mohammed, H Sehitoglu - Shape Memory and …, 2022 - Springer
Due to latent heat release and the consequent thermomechanical coupling, NiTi SMAs are
highly rate sensitive. In this study, the effect of loading frequency on the functional …

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 …

Advances in enhancing structural and functional fatigue resistance of superelastic NiTi shape memory alloy: A Review

K Nargatti, S Ahankari - Journal of Intelligent Material …, 2022 - journals.sagepub.com
Nitinol (NiTi), a shape memory alloy (SMA) of nickel and titanium, exhibits two unique
properties: the shape memory effect and superelasticity. It is a material of choice for …

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 …

A multi-physics, multi-scale and finite strain crystal plasticity-based model for pseudoelastic NiTi shape memory alloy

X Ju, Z Moumni, Y Zhang, F Zhang, J Zhu… - International Journal of …, 2022 - Elsevier
A crystal plasticity-based constitutive model is developed to describe the thermomechanical
behavior of pseudoelastic NiTi single crystal. The model includes, for the first time in the …

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 …

[HTML][HTML] An investigation on reorientation and textural evolution in a martensitic NiTi rolled sheet using EBSD

JF Xiao, C Cayron, RE Logé - International Journal of Plasticity, 2022 - Elsevier
Variant reorientation is a ubiquitous phenomenon in shape memory alloys and has a great
influence on their texture and mechanical response. In the present study, a martensitic NiTi …

Thermo-mechanically coupled functional fatigue of NiTi shape memory alloys under multiaxial cyclic loadings

Q Kan, B Qiu, X Zhang, C Yu, G Kang - International Journal of Fatigue, 2023 - Elsevier
In this work, the rate-dependent and loading path-dependent cyclic deformation behaviors of
super-elastic NiTi shape memory alloy (SMA) are investigated under multiaxial cyclic …

Concentration of transformation-induced plasticity in pseudoelastic NiTi shape memory alloys: Insight from austenite–martensite interface instability

Y Zhang, X Chai, X Ju, Y You, S Zhang, L Zheng… - International Journal of …, 2023 - Elsevier
Transformation-induced plasticity (TRIP) in pseudoelastic polycrystalline NiTi shape memory
alloys (SMAs) is investigated through tensile tests combined with in-situ infrared and digital …

Texture induced planar anisotropy of dwell fatigue response in titanium: Insights from experiments and crystal plasticity simulations

KU Yazar, S Mishra, L Kumar, S Bahl, TK Kumar… - International Journal of …, 2022 - Elsevier
This study elucidates the mechanism of texture induced planar anisotropy in ambient
temperature (∼ 25° C) dwell fatigue response of an annealed sheet of commercially pure …