Understanding and design of metallic alloys guided by phase-field simulations

Y Zhao - npj Computational Materials, 2023 - nature.com
Phase-field method (PFM) has become a mainstream computational method for predicting
the evolution of nano and mesoscopic microstructures and properties during materials …

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 …

Effect of Ni4Ti3 precipitates on the functional properties of NiTi shape memory alloys: A phase field study

B Xu, Y Sun, C Yu, J Hu, J Zhu, J **ong, Q Kan… - International Journal of …, 2024 - Elsevier
Ni 4 Ti 3 precipitates, which generally exist in aged Ni-rich NiTi shape memory alloys
(SMAs), can have a profound effect on material properties. However, the fundamental …

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 …

From mechanical behavior and elastocaloric effect to microscopic mechanisms of gradient-structured NiTi alloy: A phase-field study

Q Zhang, J Chen, G Fang - International Journal of Plasticity, 2023 - Elsevier
The introduction of gradient structure has been recently reported as a practical way to tailor
the mechanical behavior of NiTi alloy while improving its elastocaloric effect simultaneously …

Temperature dependence of elastocaloric effect in a microstructurally graded NiTi alloy

J Chen, W Wang, Q Zhang, L Lei, U Ramamurty… - Scripta Materialia, 2024 - Elsevier
The temperature dependence of elastocaloric cooling properties of a NiTi alloy with a grain
size gradient, which was obtained by cold rolling and subsequent laser surface annealing …

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

F **ao, 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 …