Results 21 to 30 of about 1,600 (183)

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

Superelasticity of Geometrically Graded NiTi Shape Memory Alloys

Metals, 2023
A stress plateau with a strain of 5–8% normally occurs during the stress-induced martensite transformation (SIM) of NiTi shape memory alloys. Within the stress plateau, the correlation between the stress and strain is lost, which limits their application
Weimei Chen, Rui Xi, Hao Jiang, Xiaoqiang Li, Guiwei Dong, Xiebin Wang   +5 more
doaj   +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

Surface Characterization of NiTi Superelastic and Shape Memory Alloys After Electrolytic Polishing [PDF]

Materials Research, 2017
For the biomedical application of NiTi alloys, an excellent surface finishing process is required to guarantee high corrosion resistance and biocompatibility, eliminating the allergenic and toxic effects associated with the release of nickel ions in the ...
Natalia Isabel de Azevedo Lopes, Laís Ávila de Oliveira Silva, Leandro de Arruda Santos, Vicente Tadeu Lopes Buono   +3 more
doaj   +1 more source

Tailoring the superelasticity of NiTi alloy fabricated by directed energy deposition through the variation of residual stress

Materials & Design, 2022
The dynamic thermal cycle of the directed energy deposition process inevitably leads to considerable residual stress within the as-deposited NiTi components.
Mugong Zhang, Yusong Duan, Xuewei Fang, Hongkai Zhang, Genghao Jiao, Yan Li, Ke Huang   +6 more
doaj   +1 more source

Recycling of NiTi Shape Memory Alloys: Fundamental and Technological Aspects of a Vacuum Induction Melting Processing Route

Advanced Engineering Materials, EarlyView.
The present study investigates recycling of NiTi shape memory alloys via vacuum induction melting. An ingot was synthesized from elemental Ni and Ti and subjected to three subsequent remelting cycles. Remelting increases process durations and impurity levels and adversely affects microstructures and functional properties.
Sakia Sophia Noorzayee, Son Tung Mai, Sarath Menon, Braulio Gadiel Sánchez Ortega, Ralf Drautz, Alexander Kauffmann, Gunther Eggeler, Jan Frenzel   +7 more
wiley   +1 more source

Simulation of deformation behavior of TiNi alloy with TiN coatings for medical applications

Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2023
The deformation behavior of the titanium nickelide alloy Ti–55.84 wt. % Ni (TiNi) with titanium nitride (TiN) coatings obtained by arc-PVD has been simulated.
V. V. Rubanik, D. A. Bahrets, V. V. Rubanik jr., V. I. Urban, V. G. Dorodeiko   +4 more
doaj   +1 more source

Inverse Identification of Energy‐Dependent Laser Absorptivity in NiTi Laser Powder‐Bed Fusion via Calibrated Melt Pool Simulation

Advanced Engineering Materials, EarlyView.
A combined experimental–computational framework identifies energy‐dependent laser absorptivity for NiTi in laser powder‐bed fusion, applicable to conduction and transition modes. Single‐track experiments and thermofluid smoothed particle hydrodynamics simulations are coupled through inverse analysis of melt pool geometry.
Mohamadreza Afrasiabi, Hadi Moutablaleh, Ignatius A. Setiawan, Mehrshad Mehrpouya   +3 more
wiley   +1 more source

From the Discovery of the Giant Magnetocaloric Effect to the Development of High‐Power‐Density Systems

Advanced Materials Technologies, EarlyView.
The article overviews past and current efforts on caloric materials and systems, highlighting the contributions of Ames National Laboratory to the field. Solid‐state caloric heat pumping is an innovative method that can be implemented in a wide range of cooling and heating applications.
Agata Czernuszewicz, Yaroslav Mudryk, Jun Cui, Lucas Griffith, Duane D. Johnson, Julie Slaughter   +5 more
wiley   +1 more source