Deformation physics of shape memory alloys–fundamentals at atomistic frontier

P Chowdhury, H Sehitoglu - Progress in Materials Science, 2017 - Elsevier
Application spectrum of shape memory alloys (SMA) is expanding rapidly and
proportionately so is the engineering demand for superior materials. An essential …

Strain rate effect on the thermomechanical behavior of NiTi shape memory alloys: a literature review

Z Wang, J Luo, W Kuang, M Jin, G Liu, X Jin, Y Shen - Metals, 2022 - mdpi.com
A review of experiments and models for the strain rate effect of NiTi Shape Memory Alloys
(SMAs) is presented in this paper. Experimental observations on the rate-dependent …

Atomistic investigation on superelasticity of NiTi shape memory alloy with complex microstructures based on molecular dynamics simulation

Y Zhang, S Jiang, M Wang - International Journal of Plasticity, 2020 - Elsevier
Superelasticity of NiTi shape memory alloy (SMA) with complex microstructures is
investigated at the atomistic scale based on molecular dynamics (MD) simulation. Six …

Molecular dynamics simulations on nanocrystalline super-elastic NiTi shape memory alloy by addressing transformation ratchetting and its atomic mechanism

B Wang, G Kang, W Wu, K Zhou, Q Kan, C Yu - International Journal of …, 2020 - Elsevier
The transformation ratchetting of super-elastic nanocrystalline (NC) NiTi shape memory
alloys (SMAs) under cyclic tension-unloading conditions and its deformation mechanism in …

[HTML][HTML] Grain size-dependent energy partition in phase transition of NiTi shape memory alloys studied by molecular dynamics simulation

K Nie, MP Li, WP Wu, QP Sun - International Journal of Solids and …, 2021 - Elsevier
Nanocrystalline NiTi shape memory alloys show fundamental changes in phase transition
behavior when the grain size is reduced down to nano-scale (grain size< 30 nm). However …

Tension-Compression asymmetry of single-crystalline and nanocrystalline NiTi shape memory alloy: An atomic scale study

X Chen, W Chen, Y Ma, Y Zhao, C Deng, X Peng… - Mechanics of …, 2020 - Elsevier
In this study, the tension-compression asymmetry of single-crystalline and nanocrystalline
NiTi shape memory alloys (SMAs) was investigated by molecular dynamics (MD) …

Molecular dynamic simulation on nano-indentation of NiTi SMA

X Chen, S Lu, Y Zhao, T Fu, C Huang… - Materials Science and …, 2018 - Elsevier
Micro-indentation has been widely used for testing the mechanical properties of NiTi SMAs.
In the present study, large-scale molecular dynamics (MD) simulations of nano-indentation …

Atomistic study on the super-elasticity of nanocrystalline NiTi shape memory alloy subjected to a cyclic deformation

B Wang, G Kang, Q Kan, W Wu, K Zhou, C Yu - Computational Materials …, 2018 - Elsevier
By establishing some atomistic simulation cells with the same size but different numbers of
grains, molecular dynamics simulations are performed to investigate the super-elasticity of …

Modeling of finite deformation of pseudoelastic NiTi shape memory alloy considering various inelasticity mechanisms

S Dhala, S Mishra, A Tewari, A Alankar - International Journal of Plasticity, 2019 - Elsevier
A crystal plasticity finite element (CPFE) model is developed for pseudoelastic NiTi shape
memory alloy (SMA). The model includes various inelastic mechanisms of deformation such …

Molecular dynamics simulation of grain size effect on mechanism of twin martensite transformation of nanocrystalline NiTi shape memory alloys

B Liu, Z Li, C Du, W Wu - Computational Materials Science, 2022 - Elsevier
In this work, a constitutive model considering grain size and model size is established to
describe the stress-strain response of nanocrystalline NiTi Shape Memory Alloys (SMAs) …