Shape memory alloys and polymers for MEMS/NEMS applications: Review on recent findings and challenges in design, preparation, and characterization

I Stachiv, E Alarcon, M Lamac - Metals, 2021 - mdpi.com
Rapid progress in material science and nanotechnology has led to the development of the
shape memory alloys (SMA) and the shape memory polymers (SMP) based functional …

A short review on the microstructure, transformation behavior and functional properties of NiTi shape memory alloys fabricated by selective laser melting

X Wang, S Kustov, J Van Humbeeck - Materials, 2018 - mdpi.com
Due to unique functional and mechanical properties, NiTi shape memory alloys are one of
the most promising metallic functional materials. However, the poor workability limits the …

Wire and arc additive manufacturing of a Ni-rich NiTi shape memory alloy: Microstructure and mechanical properties

Z Zeng, BQ Cong, JP Oliveira, WC Ke, N Schell… - Additive …, 2020 - Elsevier
Abstract Wire and Arc Additive Manufacturing (WAAM) was used for fabrication of NiTi parts
using a commercialy available Ni-rich NiTi wire as the feedstock material. The as-built parts …

Laser welding of NiTi shape memory alloy: A review

M Mehrpouya, A Gisario, M Elahinia - Journal of Manufacturing Processes, 2018 - Elsevier
NiTi shape memory alloys (SMA) are broadly employed in multifunctional systems in several
industrial domains, like aerospace, automotive, biomedical and power plants. Their …

Microstructure evolution and superelasticity of layer-like NiTiNb porous metal prepared by eutectic reaction

L Wang, L Xie, LC Zhang, L Chen, Z Ding, Y Lv… - Acta Materialia, 2018 - Elsevier
This work combines several techniques into a novel method to manufacture NiTisingle
bondNb layer-like porous structures with 3D interconnected channels, which are of vital …

Occurrence of the R-phase with increased stability induced by low temperature precipitate-free aging in a Ni50. 9Ti49. 1 alloy

X Huo, P Chen, S Lahkar, M Jin, X Han, Y Song… - Acta Materialia, 2022 - Elsevier
The R-phase transformation presents low thermal hysteresis, high stability against thermal
cycling and ultrahigh internal friction (IF). However, a clear explanation for the occurrence of …

Molecular dynamics modeling of NiTi superelasticity in presence of nanoprecipitates

P Chowdhury, L Patriarca, G Ren… - International Journal of …, 2016 - Elsevier
The presence of nano-sized coherent precipitates is well known to have crucial impact on
the mechanical behaviors of a broad class of superelastic alloys. As a representative …

In-situ synchrotron high energy X-ray diffraction study of micro-mechanical behaviour of R phase reorientation in nanocrystalline NiTi alloy

B Feng, X Kong, S Hao, Y Liu, Y Yang, H Yang, F Guo… - Acta Materialia, 2020 - Elsevier
This study investigated the mechanisms and temperature dependence of the R phase
variant reorientation deformation in a nanocrystalline NiTi wire by means of in-situ …

Numerical study for prediction of optimum operational parameters in laser welding of NiTi alloy

M Mehrpouya, A Gisario, H Huang… - Optics & Laser …, 2019 - Elsevier
Laser welding of NiTi alloy is a challenging process since it strongly affects the functionality
of the material in the heat affected and fusion zones. In fact, the inherent thermal process …

[HTML][HTML] The influence of dislocations on B19'and R-phase transformations in a NiTi shape memory alloy

H Vashishtha, DM Collins - Scripta Materialia, 2025 - Elsevier
The ability to control the stress-induced phase transformation of the shape memory alloy,
NiTi, is an important technological challenge that must be understood for their wide …