Results 21 to 30 of about 4,118 (217)

A high-entropy high-temperature shape memory alloy with large and complete superelastic recovery

Materials Research Letters, 2021
High-temperature shape memory alloys (HTSMAs) show enormous potential for applications as energy conversion devices, actuators and sensors in automotive, aerospace, and energy exploration industries, but they suffer from strength decrease and ...
Shaohui Li, Daoyong Cong, Zhen Chen, Shengwei Li, Chao Song, Yuxian Cao, Zhihua Nie, Yandong Wang   +7 more
doaj   +1 more source

Unprecedented non-hysteretic superelasticity of [001]-oriented NiCoFeGa single crystals

, 2020
Superelasticity associated with the martensitic transformation has found a broad range of engineering applications1,2. However, the intrinsic hysteresis3 and temperature sensitivity4 of the first-order phase transformation significantly hinder the usage ...
Liu, Y.,, Li, S.,, Liu, W.,, Zheng, H.,, Vitos, Levente,, Nie, Z.,, Mitchell, J. F.,, Zhang, X.,, Chen, H.,, Yu, R.,, Ren, Y.,, Wang, Y. -D,, Tian, F.,, Shen, X.,, Zhang, M.,, Cao, P.,, Ye, F.,, Li, R.,, Cong, D.,   +18 more
core   +1 more source

Passive Attenuation of Mechanical Vibrations with a Superelastic SMA Bending Springs: An Experimental Investigation

Sensors, 2022
This work presents an experimental study related to the mechanical performance of a special design spring fabricated with a superelastic shape memory alloy (SMA-SE).
Richard Senko, Vinícius S. Almeida, Rômulo P. B. dos Reis, Andersson G. Oliveira, Antonio A. Silva, Marcelo C. Rodrigues, Laura H. de Carvalho, Antonio G. B. Lima   +7 more
doaj   +1 more source

Effect of Fe addition on the microstructure, transformation behaviour and superelasticity of NiTi alloys fabricated by laser powder bed fusion

Virtual and Physical Prototyping, 2023
NiTi-Fe ternary shape memory alloys were produced by laser powder bed fusion (L-PBF) using the pre-alloyed NiTi and elemental Fe powders. A large process window exists to fabricate dense NiTiFe0.3 and NiTiFe0.5 alloys, while severe cracks occur in the ...
Rui Xi, Hao Jiang, Guichuan Li, Zhihui Zhang, Guoqun Zhao, Kim Vanmeensel, Sergey Kustov, Jan Van Humbeeck, Xiebin Wang   +8 more
doaj   +1 more source

Functional Behaviour of Cold-Worked and Straight-Annealed NiTi Elements Processed with Ultrashort Laser Cutting

Metals, 2022
Among functional materials, quasiequiatomic NiTi alloys are one of the most promising and diffused for some sectors, from the biomedical to aerospace ones.
Carlo Alberto Biffi, Ausonio Tuissi
doaj   +1 more source

Critical Frequency of Self-Heating in a Superelastic Ni-Ti Belleville Spring: Experimental Characterization and Numerical Simulation

Sensors, 2021
The mechanical loading frequency affects the functional properties of shape memory alloys (SMA). Thus, it is crucial to study its effect for the successful use of these materials in dynamic applications.
Emmanuel Ferreira de Souza, Paulo César Sales da Silva, Estephanie Nobre Dantas Grassi, Carlos José de Araújo, Antonio Gilson Barbosa de Lima   +4 more
doaj   +1 more source

INNOVATIVE USE OF SHAPE MEMORY ALLOYS AS REINFORCEMENTS FOR CONCRETE BEAM-COLUMN JOINTS: AN OVERVIEW

Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ, 2023
Shape memory alloys have two unique properties of shape memory effect (SME) and superelasticity (SE) that are the ability for large inelastic deformations recovery after heating (SME) and stress removal (SE).
Mahdieh Sabbaghian, Mohammadzaman Kabir
doaj   +1 more source

Research Progress of Fe-Based Superelastic Alloys

Crystals, 2022
In recent years, superelastic alloys have become a current research hotspot due to the large recoverable deformation, which far exceeds the elastic recovery. This will create more possibilities in practical applications.
Zhenxin Li, Yang Zhang, Kai Dong, Zhongwu Zhang   +3 more
doaj   +1 more source

Laser-Induced Superelasticity in NiTinol Stent Strut

, 2018
Shape setting is a fundamental step of NiTi components manufacturing. It is undertaken for fixing programmed shapes and for optimizing both the shape memory and the superelastic properties of SMA.
Tuissi A, Biffi CA, Mathivanan K
core   +1 more source

Molecular Dynamics Investigation on Grain Size-Dependent Superelastic Behavior of CuZr Shape Memory Alloys

Metals
The superelasticity of CuZr shape memory alloys (SMAs) originates from stress-induced transformations between the B2 (austenite) and B19’ (martensite) phases. Grain size is a key parameter affecting the superelasticity of shape memory alloys.
Mixun Zhu, Kai Wang, Hongtao Zhong, Huahuai Shen, Yong Zhang, Xiaoling Fu, Yuanzheng Yang   +6 more
doaj   +1 more source