Recent development of TiNi‐based shape memory alloys with high cycle stability and high transformation temperature

Y Tong, A Shuitcev, Y Zheng - Advanced Engineering Materials, 2020 - Wiley Online Library
TiNi‐based shape memory alloys (SMAs) attract a lot of attention from engineering and
biomedical fields because of their superior functional properties, such as their unique shape …

Stable tensile recovery strain induced by a Ni4Ti3 nanoprecipitate in a Ni50. 4Ti49. 6 shape memory alloy fabricated via selective laser melting

HZ Lu, HW Ma, WS Cai, X Luo, Z Wang, CH Song… - Acta Materialia, 2021 - Elsevier
We report a stable tensile recovery strain induced by a Ni 4 Ti 3 nanoprecipitate in a Ni 50.4
Ti 49.6 shape memory alloy (SMA) fabricated via selective laser melting (SLM), followed by …

Simultaneous enhancement of mechanical and shape memory properties by heat-treatment homogenization of Ti2Ni precipitates in TiNi shape memory alloy …

HZ Lu, LH Liu, C Yang, X Luo, CH Song, Z Wang… - Journal of Materials …, 2022 - Elsevier
The excellent shape memory and mechanical properties of TiNi shape memory alloys
(SMAs) fabricated using selective laser melting (SLM) are highly desirable for a wide range …

Progress in phase field modeling of functional properties and fracture behavior of shape memory alloys

B Xu, C Yu, J Xiong, J Hu, Q Kan, C Wang… - Progress in Materials …, 2024 - Elsevier
Shape memory alloys (SMAs) have been widely employed in many engineering fields due
to their unique functional properties, such as super-elasticity, elastocaloric effect, and shape …

Grain boundary and dislocation strengthening of nanocrystalline NiTi for stable elastocaloric cooling

H Lin, P Hua, K Huang, Q Li, Q Sun - Scripta Materialia, 2023 - Elsevier
We fabricate a nanocrystalline NiTi with an average grain size of 31 nm and high-density
(4.7× 10 15 m− 2) dislocations via cold rolling (38% thickness reduction) and annealing …

Improvement of tensile superelasticity by aging treatment of NiTi shape memory alloys fabricated by electron beam wire-feed additive manufacturing

Z Pu, D Du, D Zhang, Z Li, S Xue, R Xi, X Wang… - Journal of Materials …, 2023 - Elsevier
For the first time, this work comprehensively studied the effectiveness of precipitation
hardening achieved by aging treatment in improving the tensile superelasticity of NiTi alloys …

Effects of grain size and partial amorphization on elastocaloric cooling performance of nanostructured NiTi

H Lin, P Hua, Q Sun - Scripta Materialia, 2022 - Elsevier
We fabricate three polycrystalline superelastic NiTi samples with average grain sizes of 110,
60, 35 nm and one crystalline-amorphous NiTi nanocomposite sample to investigate their …

In-situ alloying of NiTiNb ternary shape memory alloys via laser powder bed fusion using pre-alloyed NiTi and elemental Nb powders: Microstructure, phase …

R Xi, H Jiang, G Li, S Kustov, Z Zhang, H Wei, Z Liu… - Additive …, 2024 - Elsevier
Laser powder bed fusion (L-PBF) provides not only the advantage to make geometrically
complex structures, but also the potential for in-situ alloying. In this work,(NiTi) 100–x Nb x …

Microstructure, phase transformation behavior and tensile superelasticity of NiTi shape memory alloys fabricated by the wire-based vacuum additive manufacturing

Z Pu, D Du, K Wang, G Liu, D Zhang, X Wang… - Materials Science and …, 2021 - Elsevier
In this work, NiTi shape memory alloys with tensile superelasticity are fabricated by
thetechnology of wire-based vacuum additive manufacturing and post heat treatment. This …

Unleashing multi-scale mechanical enhancement in NiTi shape memory alloy via annular intra-laser deposition with homogenized Ti2Ni nanoprecipitates

J Yi, L Wan, T Shu, X Zhang, F Liu, GJ Cheng - Acta Materialia, 2024 - Elsevier
Additive manufacturing (AM) of composition-sensitive NiTi shape memory alloys (SMAs) is
hindered by uncontrollable non-equilibrium microstructures, leading to functional …