Phase engineering and supercompatibility of shape memory alloys

H Gu, L Bumke, C Chluba, E Quandt, RD James - Materials Today, 2018 - Elsevier
In recent years examples of unprecedented functional and structural fatigue resistance and
lowered hysteresis in shape memory alloys have been achieved by combining conditions of …

Review on strain localization phenomena studied by high‐resolution digital image correlation

A Weidner, H Biermann - Advanced Engineering Materials, 2021 - Wiley Online Library
Herein, a comprehensive review on the application of digital image correlation (DIC) for
investigations of strain localization phenomena in the field of materials science and …

Toward tunable mechanical behavior and enhanced elastocaloric effect in NiTi alloy by gradient structure

J Chen, B Liu, L Xing, W Liu, L Lei, G Fang - Acta Materialia, 2022 - Elsevier
Tailoring properties of engineering materials to meet various application requirements is a
long-standing challenge in materials science. Here, we demonstrate an unprecedented …

[HTML][HTML] Atomic scale processes of phase transformations in nanocrystalline NiTi shape-memory alloys

WS Ko, SB Maisel, B Grabowski, JB Jeon… - Acta Materialia, 2017 - Elsevier
Molecular dynamics simulations are performed to investigate temperature-and stress-
induced phase transformations in nanocrystalline nickel-titanium shape-memory alloys. Our …

Shear-induced amorphization in nanocrystalline NiTi micropillars under large plastic deformation

P Hua, B Wang, C Yu, Y Han, Q Sun - Acta Materialia, 2022 - Elsevier
Shear-induced amorphization is a phenomenon observed in polycrystalline NiTi shape
memory alloys under severe plastic deformation, but the underlying mechanism of such a …

Achieving great comprehensive elastocaloric cooling performances of superelastic NiTi by grain size engineering

J Chen, L Lei, G Fang, D Wang - Materials Today Nano, 2023 - Elsevier
Elastocaloric materials, as cutting-edge alternatives to hazardous refrigerants utilized in
vapor-compression systems, are promising for eco-friendly solid-state cooling, but their …

Phase field study on the microscopic mechanism of grain size dependent cyclic degradation of super-elasticity and shape memory effect in nano-polycrystalline NiTi …

B Xu, C Yu, G Kang - International Journal of Plasticity, 2021 - Elsevier
A non-isothermal and crystal plasticity based phase field model was established by
incorporating various inelastic deformation mechanisms, ie, martensite transformation …

Bending fatigue life enhancement of NiTi alloy by pre-strain warm surface mechanical attrition treatment

P Wei, P Hua, M Xia, K Yan, H Lin, S Yi, J Lu, F Ren… - Acta Materialia, 2022 - Elsevier
Many structures like medical stents made of superelastic NiTi shape memory alloy (SMA)
are subjected to cyclic bending loads and show a limited fatigue life due to crack nucleation …

Effects of grain size on tensile fatigue life of nanostructured NiTi shape memory alloy

H Yin, Y He, Z Moumni, Q Sun - International Journal of Fatigue, 2016 - Elsevier
The effects of grain size (GS) on tensile fatigue life of nanostructured NiTi superelastic shape
memory alloys (SMAs) with GS= 10 nm, 42 nm and 80 nm are investigated. Macroscopic …

High fatigue life and cooling efficiency of NiTi shape memory alloy under cyclic compression

K Zhang, G Kang, Q Sun - Scripta Materialia, 2019 - Elsevier
We investigate the cyclic compressive fatigue behavior of pseudoelastic polycrystalline NiTi
shape memory alloy (SMA) under maximum applied stresses of 800, 950 and 1200 MPa. A …