Elastocaloric cooling of shape memory alloys: A review

J Chen, L Lei, G Fang - Materials Today Communications, 2021 - Elsevier
Elastocaloric cooling technology based on shape memory alloys (SMAs) exploits the caloric
effect generated by stress-induced phase transformation of elastocaloric materials to realize …

Fatigue of Nitinol: The state-of-the-art and ongoing challenges

MJ Mahtabi, N Shamsaei, MR Mitchell - journal of the mechanical behavior …, 2015 - Elsevier
Nitinol, a nearly equiatomic alloy of nickel and titanium, has been considered for a wide
range of applications including medical and dental devices and implants as well as …

On the crystallographic texture and torsional behavior of NiTi shape memory alloy processed by laser powder bed fusion: Effect of build orientation

K Safaei, M Nematollahi, P Bayati, F Kordizadeh… - Additive …, 2022 - Elsevier
There is a growing industrial and academic interest in additive manufacturing (AM)
techniques such as laser powder bed fusion (LPBF) both for producing parts with complex …

Large-strain functional fatigue properties of superelastic metastable β titanium and NiTi alloys: A comparative study

L Héraud, P Castany, MF Ijaz, DM Gordin… - Journal of Alloys and …, 2023 - Elsevier
This paper investigates the fatigue behavior of superelastic NiTi and two metastable β
titanium alloys-commercial Beta III (Ti-11.5 Mo-6Zr-4.5 Sn wt%) and Ti2448 (Ti–24Nb–4Zr …

Ultra-high fatigue life of NiTi cylinders for compression-based elastocaloric cooling

J Chen, K Zhang, Q Kan, H Yin, Q Sun - Applied Physics Letters, 2019 - pubs.aip.org
We investigated the fatigue behavior of superelastic polycrystalline NiTi cylinders during
reversible partial transformation under cyclic adiabatic compression at 20 Hz with a …

Reducing functional fatigue, transition stress and hysteresis of NiTi micropillars by one-step overstressed plastic deformation

K Chu, Q Sun - Scripta Materialia, 2021 - Elsevier
The effect of one-step overstressed compressive plastic deformation on functional fatigue of
polycrystalline NiTi is investigated. Cuboidal micropillars are subjected to one-step plastic …

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 …

Effects of grain size on fatigue crack growth behaviors of nanocrystalline superelastic NiTi shape memory alloys

J Chen, H Yin, Q Sun - Acta materialia, 2020 - Elsevier
The grain size (GS) dependence of fatigue crack growth in nanocrystalline superelastic NiTi
shape memory alloys (SMAs) with the average GS of 10, 30, 60 and 235 nm is investigated …

Improved functional fatigue resistance of single crystalline NiTi micropillars with uniformly oriented Ti3Ni4 precipitates

F Xiao, K Chu, Z Li, R Hou, Y Gao, Q Sun… - International Journal of …, 2023 - Elsevier
Superelasticity is one promising functional property of shape memory alloys. To utilize
superelasticity in application, sufficient fatigue life (ie, for functional fatigue) during the …