Results 21 to 30 of about 6,728 (205)

Advances in martensitic transformations in Cu-based shape memory alloys achieved by in situ neutron and synchrotron X-ray diffraction methods [PDF]

open access: yes, 2012
This article deals with the application of several X-ray and neutron diffraction methods to investigate the mechanics of a stress induced martensitic transformation in Cu-based shape memory alloy polycrystals. It puts experimental results obtained by two
Berveiller, Sophie   +3 more
core   +8 more sources

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

open access: yesMetals, 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

open access: yesSensors, 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   +4 more
doaj   +1 more source

The determination and evaluation of Nitinol constitutive models for finite element analysis [PDF]

open access: yes, 2007
Superelastic Ni-Ti (Nitinol) is a member of the shape memory alloy (SMA) family of metals. The physical properties of Nitinol are highly dependant on a number of factors, including manufacturing method, subsequent processing, operating temperature, and ...
Ashton, T.R.   +4 more
core   +1 more source

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

open access: yesMağallaẗ 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

Superelastic load cycling of Gum Metal [PDF]

open access: yesActa Materialia, 2015
The superelastic beta titanium alloy, Gum Metal, has been found to accumulate plastic strain during tensile load cycling in the superelastic regime. This is evident from the positive drift of the macroscopic stress vs. strain hysteresis curve parallel to the strain axis and the change in its geometry subsequent to every load-unload cycle.
Vorontsov, VA   +3 more
openaire   +4 more sources

Research Progress of Fe-Based Superelastic Alloys

open access: yesCrystals, 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   +3 more
doaj   +1 more source

On the experimental testing of fine Nitinol wires for medical devices [PDF]

open access: yes, 2011
Nitinol, a nickel titanium alloy, is widely used as a biocompatible metal with applications in high strain medical devices. The alloy exhibits both superelasticity and thermal shape memory behaviour. Basic mechanical properties can be established and are
Dempster, William   +2 more
core   +1 more source

Superelasticity of Geometrically Graded NiTi Shape Memory Alloys

open access: yesMetals, 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   +5 more
doaj   +1 more source

Biomimetic superelastic graphene-based cellular monoliths [PDF]

open access: yesNature Communications, 2012
Many applications proposed for graphene require multiple sheets be assembled into a monolithic structure. The ability to maintain structural integrity upon large deformation is essential to ensure a macroscopic material which functions reliably. However, it has remained a great challenge to achieve high elasticity in three-dimensional graphene networks.
Qiu, Ling   +4 more
openaire   +3 more sources

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