Results 31 to 40 of about 6,618 (297)

High-temperature shape memory alloys based on the Cu-Al-Ni system: design and thermomechanical characterization

open access: yesJournal of Materials Research and Technology, 2020
To offer a response to the increasing interest on high-temperature shape memory alloys, mainly driven by the aeronautic and aerospace industries, the design and characterization of Cu-Al-Ni shape memory alloys with high transformation temperatures ...
I. López-Ferreño   +5 more
doaj   +1 more source

Laser welding of H-phase strengthened Ni-rich NiTi-20Zr high temperature shape memory alloy

open access: yesMaterials & Design, 2021
Laser welding of a Ni-rich NiTi-20Zr (at.%) high temperature shape memory alloy was performed. The starting base material was aged for 3 h at 550 °C followed by air cooling prior to welding to induce H-phase precipitation.
J.P. Oliveira   +6 more
doaj   +1 more source

Deformation and Fracture of Thin Sheets of Nitinol [PDF]

open access: yes, 2007
Nickel-Titanium (Nitinol) is a Shape Memory Alloy (SMA) that exhibits superelasticity (pseudoelasticity) and shape memory by a solid-solid state diffusion-less phase transformation.
Daly, Samantha Hayes
core   +1 more source

Shape Memory Effect and Martensitic Transformation in Fe–Mn–Al–Ni Alloy

open access: yesMetals, 2022
In this study, the influence of an aging treatment on the shape memory effect and martensitic transformation was investigated in an Fe–Mn–Al–Ni alloy by adding a small amount of Nb and C elements.
Rui Zhang   +5 more
doaj   +1 more source

Effect of V and Ni addition on the Ti-Pt shape memory alloys for high temperature applications [PDF]

open access: yesMATEC Web of Conferences
Currently, high temperature shape memory alloys (HTSMA) are in great demand for their development and commercialization. The titanium- platinum (TiPt) alloy is the most attractive and promising HTSMA for aerospace and automobile applications due to its ...
Modiba Rosinah.
doaj   +1 more source

Microstructure evolution of Ni47Ti44Nb9 shape memory alloy in high-temperature deformation

open access: yesInternational Journal of Lightweight Materials and Manufacture, 2020
An important and efficient way to improve the memory performance potential of shape memory alloys (SMAs) is by tailoring the microstructure such as grain refining in thermal deformation working.
Zhi-Wei Yang   +5 more
doaj   +1 more source

Effect of Stoichiometry on Shape Memory Properties of Ti-Ni-Hf-Cu-Nb Shape Memory Alloys Manufactured by Suspended Droplet Alloying

open access: yesSolids, 2022
A novel Ti-Ni-Hf-Cu-Nb shape memory alloy has been developed by a new combinatorial alloy synthesis method, the Suspended Droplet Alloying. The influence of alloying elements on the transformation temperature, the microstructure and the shape memory ...
Sheng Li   +5 more
doaj   +1 more source

An Experimental Study on Rate-sensitive Tensile Deformation Behaviour of Fe-based Shape Memory Alloy

open access: yesMATEC Web of Conferences, 2015
Recently, it is attempted to apply high manganese steel including Fe-based shape memory alloy to vibration dampers. Especially, the alloy indicates a special characteristic as a well-known shape memory effect.
Iwamoto Takeshi, Fujita Kazuki
doaj   +1 more source

High temperature transformations of the Au7Cu5Al4 shape-memory alloy [PDF]

open access: yesJournal of Alloys and Compounds, 2011
Abstract The β-phase of Au 7 Cu 5 Al 4 undergoes a reversible shape-memory phase transformation, however there has been some uncertainty regarding the crystal structure or structures of the parent phase. Here we show that, under equilibrium conditions, the parent phase possesses the L2 1 structure between its A p (about 79 °C) and ∼630 °C, and ...
Cortie, MB   +5 more
openaire   +3 more sources

Shape memory effect and compositional dependence of Zr-Cu binary and Zr-Cu-Al ternary alloys

open access: yesMechanical Engineering Journal, 2017
The intermetallic compound ZrCu experiences a transformation from a parent phase into a martensitic phase with rapid cooling. ZrCu possesses considerable promise as a high-temperature shape memory alloy.
Hitoo TOKUNAGA, Hideki YOSHIOKA
doaj   +1 more source

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