The Magnetic Behavior and Physical Characterization of Cu–Mn–Al Ferromagnetic Shape Memory Alloy

Şaşmaz, Merivan; Bayri, Ali; Aydoğdu, Y.

doi:10.1007/s10948-010-0934-2

Cited by 22 publications

(3 citation statements)

References 6 publications

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“…The Cu-Al-Mn alloys, with low aluminum contents, show an excellent ductility, good workability, an interesting shape memory, and also have pseudoelastic properties [8,9]. Because of the Mn-Mn interaction, the Cu-Al-Mn system is classified as part of the ferromagnetic SMA class of SMA [10]. In these alloys, the coupling of the magnetism and the structure leads to peculiar magneto-mechanical and important functional materials that are characterized by both ferromagnetic behavior and the shape memory property [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

A Study of a Cryogenic CuAlMn Shape Memory Alloy

Nespoli,

Passaretti,

Ninarello

et al. 2024

Metals

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In extreme temperature environments, a newly emerging engineering application involves both the active and passive control of structures using cryogenic shape memory alloys, which are smart materials able to recover high deformation below the freezing point. With the objective of carrying out new advances in this area, the present work aims to investigate the Cu-7.5Al-13.5Mn (wt.%) shape memory alloy. Thermal, microstructural, and thermomechanical analyses of as-cast and hot-rolled specimens were performed, taking into account the effects of annealing and solubilization. It was observed that the phase transition occurs at temperatures below 120 K and changes according to the thermo-mechanical path. Specifically, hot-rolling lowers the phase transition temperature range with respect to the as-cast condition–from 34 K to 23 K for Mf, and from 89 K to 80 K for Af. Additionally, when the annealing temperature rises, the phase transformation temperature increases as well, and the alloy loses its cryogenic features when heat treated above 473 K. Finally, loss factors of 0.06 and 0.088, which were respectively found in dynamic and static settings, validate the material’s good damping response.

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Section: Introductionmentioning

confidence: 99%

A Study of a Cryogenic CuAlMn Shape Memory Alloy

Nespoli,

Passaretti,

Ninarello

et al. 2024

Metals

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“…Smart materials, which provide work when exposed to a certain stimulus, have become prime candidates to create integrated and compact actuators. A shape memory alloy (SMA) is a brand of smart materials that can be magnetically [1], or thermally activated. The NiTiNOL alloy, which is a type of thermally activated SMA, can be easily obtained in various shapes such as wires, springs, and sheets.…”

Section: Introductionmentioning

confidence: 99%

“…The NiTiNOL alloy, which is a type of thermally activated SMA, can be easily obtained in various shapes such as wires, springs, and sheets. It is shown to have higher energetic costs and lower fatigue life [2] but presents with the 1 These authors contributed equally to this work. * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Designing compliant mechanisms composed of shape memory alloy and actuated by induction heating

Thabuis¹,

Thomas²,

Martinez³

et al. 2021

Smart Mater. Struct.

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Shape memory alloys (SMAs) are a type of smart materials that reacts mechanically to heat. Due to their complex behavior, they are often used in a simple geometry such as wires. This constrains the output displacement of the alloy to a simple linear contraction of the wire. When a different output displacement is desired, the SMA is coupled to a mechanism that transforms the motion, degrading the compactness of the whole system. To alleviate such issues, we propose fabricating, directly in SMA, a compliant mechanism that performs complex output motions and thus improves integration. The first part of this paper presents a method to design such systems. When coupled with a bias-spring and a heating system, these mechanisms form a full actuator. The conventional heating system relies on Joules losses coming from direct electric conduction through the alloy. However, now that the SMA has a complex shape, passing a current through it becomes an arduous task requiring multiple electrodes making the system cumbersome and deteriorating its integrability. Magnetic induction heating is proposed to tackle this limitation, heating the mechanism without contact and conserving a compact actuator.

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Influence of aging on transformation characteristic and phase structure of a Cu–12.4Al–1.2Ti–1.2Ta shape memory alloy

Yildiz

2020

Appl. Phys. A

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The Magnetic Behavior and Physical Characterization of Cu–Mn–Al Ferromagnetic Shape Memory Alloy

Cited by 22 publications

References 6 publications

A Study of a Cryogenic CuAlMn Shape Memory Alloy

A Study of a Cryogenic CuAlMn Shape Memory Alloy

Designing compliant mechanisms composed of shape memory alloy and actuated by induction heating

Influence of aging on transformation characteristic and phase structure of a Cu–12.4Al–1.2Ti–1.2Ta shape memory alloy

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