Reconciling viability and cost-effective shape memory alloy options – A review of copper and iron based shape memory metallic systems

Alaneme, Kenneth Kanayo; Okotete, Eloho Anita

doi:10.1016/j.jestch.2016.05.010

Cited by 94 publications

(55 citation statements)

References 86 publications

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“…These materials have the ability to undergo extensive deformation when load is applied at specific temperatures and revert back to their original dimension when the load is removed [1]. During this transformation the material undergoes large elastic strain which is not a function of bond stretching but reversible motion of domain boundaries between the variants of martensite.…”

Section: P S E U D O E L a S T I C I T Y O R S U P E R E L A S T I C mentioning

confidence: 99%

“…SMAs have been used in vibration dampers [37] and isolators [12] due to SMAs' high internal friction. For example, Aiken et al (1993) have suggested using SMA as passive energy dissipater to increase the hysteresis damping in structure under earthquake [1]. The more advanced applications are in passive/active control system [3,22], smart/adaptive structures [19,21], and composite structures [35].…”

Section: Review Of Sma Different Maritime Applicationsmentioning

confidence: 99%

See 1 more Smart Citation

Materials with Shape Memory Effect for Applications in Maritime

Ivošević

Rudolf

2019

Scientific Journal of Polish Naval Academy

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In this review it is presented the insight of challenges faced by all branches of industry in the new age, and especially the maritime industry, strive for sustainable development, better energy control, use of materials with functional properties such as shape memory, all in the direction of increasing safety and comfort. Therefore, the development of new materials with shape memory, which is associated with the introduction of optimized production and the achievement of better functional properties. This leads to new applications in different systems and possible use on devices, which meet the rigorous requirements of the modern industry. The research into new materials with shape memory effect and their applied use in maritime is a challenge that many researchers have encountered in recent decades, and this is why in this paper we look at the basic engineering aspect of these materials and their current as well as future applications in the maritime industry. An overview of several innovations that testify shape memory effect and superelasticity in different maritime fields will be presented in this review.

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Section: P S E U D O E L a S T I C I T Y O R S U P E R E L A S T I C mentioning

confidence: 99%

Section: Review Of Sma Different Maritime Applicationsmentioning

confidence: 99%

Materials with Shape Memory Effect for Applications in Maritime

Ivošević

Rudolf

2019

Scientific Journal of Polish Naval Academy

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“…The transition temperature for the transformation of an SMA's material structure can vary with its crystal size, applied stress, thermal cycling times, and other factors [10], among which the proportion of the alloy ingredients has the major influence. Therefore, the applications of the SMA can be determined by controlling the proportion of its ingredients.…”

Section: Introductionmentioning

confidence: 99%

Application of Virtual Reality for Learning the Material Properties of Shape Memory Alloys

et al. 2019

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A shape memory alloy (SMA) is an alloy which can eliminate deformation at lower temperatures and restore its original shape upon heating. SMAs have been receiving considerable attention in the research field of materials science, and their applications include robotics, automotive, aerospace, and biomedical industries. Observing the SMA’s shaping and restoration processes is important for understanding its working principles and applications. However, the transformation of its crystal structure with temperature can only be seen using special equipment, such as a transmission electron microscope (TEM), which is an expensive apparatus and the operation requires professional skills. In this study, a teaching module is designed using virtual reality (VR) technology and research results of an SMA to show its shape memory properties, shaping and restoration processes, as well as the real-life applications in an immersive and interactive way. A teaching experiment has been conducted to analyze students’ learning effectiveness using the teaching module (the experimental group) compared with that of using real SMA materials as the teaching aids (the control group). Two classes of students in the Department of Materials Science (one as the experimental group and the other as the control group) were selected as the samples by convenience sampling from a university in North Taiwan. The experimental group contained 52 students and the control group contained 70 students. A nonequivalent pretest-posttest design was adopted to explore whether the two groups had a significant difference in learning effectiveness. The experimental results reveal that the teaching module can improve the learning effectiveness significantly (p = 0.001), and the questionnaire results also show that a majority of the students had positive attitudes about the teaching module. They believed that it could increase their learning motivation and help them understand the properties and applications of the SMA.

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“…The latter one can be considered as the most remarkable category of Cu-Al system, which may also be indicated as the only accessible high temperature SMAs in Cu-based group. Furthermore, Cu-Al-Ni alloys possess high transformation temperatures as well as thermal stability and are less susceptible to aging phenomenon, compared to Cu-Zn-Al alloys [9].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and thermodynamic analysis of nanostructured Cu-13.2%Al-4%Ni ternary system synthesized by mechanical alloying

Mayahi

Shokuhfar

Vaezi

2019

Metall. Res. Technol.

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Thermodynamic analysis of nanostructured Cu-13.2%Al-4%Ni synthesized by mechanical alloying was studied through Miedema's semi-empirical model. The variations of lattice strain, crystallite size and microstructural evolution at various milling times were also measured using X-ray diffraction and scanning electron microscope. The results showed an increase in lattice strain and reduction in crystallite size due to an increase in density of structural defects as a result of high-energy collisions during mechanical alloying. The calculated thermodynamic data suggested that in all binary Cu-Al, Al-Ni and Ni-Cu systems, there is a driving force for solid solution formation over all compositions due to negative Gibbs free energy changes in those compositions, while this value is positive for the formation of amorphous phase over some compositions which can be attributed to the absence of driving force. Additionally, thermodynamic data were in agreement with XRD results which showed solid solution was formed at middle stages of mechanical alloying. Moreover, it is concluded that the formation of solid solution is easier at three corners of ternary diagram, where the concentration of one element is major, whilst amorphous phase formation is more desirable in other compositions.Keywords: thermodynamic properties / nanostructured materials / powder metallurgy / mechanical alloying / shape memory alloys *

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Reconciling viability and cost-effective shape memory alloy options – A review of copper and iron based shape memory metallic systems

Cited by 94 publications

References 86 publications

Materials with Shape Memory Effect for Applications in Maritime

Materials with Shape Memory Effect for Applications in Maritime

Application of Virtual Reality for Learning the Material Properties of Shape Memory Alloys

Microstructure and thermodynamic analysis of nanostructured Cu-13.2%Al-4%Ni ternary system synthesized by mechanical alloying

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