Influence of the addition of Cr in the microstructure and in the phase transformation temperatures of Cu–Al–Be–Nb–Ni alloys

Andrade, Breno Henrique da Silva; Caluête, Rafael Evaristo; Oliveira, Danniel Ferreira de; Gomes, Rodinei Medeiros; Melo, Tadeu Antonio de Azevedo

doi:10.1007/s10973-019-08483-3

Cited by 7 publications

(1 citation statement)

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“…The addition of alloying elements to the Cu-Al-Be SMA must be carried out with caution since large concentrations of added elements can exceed the solubility limit and generate the precipitation of second phases, which modify the shape memory effects [114]. With the formation of precipitates, the fraction of Be and Al in the β-phase matrix is probably reduced, which alters the martensitic transformation temperatures that are strongly dependent on the chemical composition, mainly on Be content [114]. Variations of about 0.1 wt% Be can result in a modification of about 90 °C [115].…”

Section: Invited Feature Paper-reviewmentioning

confidence: 99%

Revisiting Cu-based shape memory alloys: Recent developments and new perspectives

Mazzer

Silva

Gargarella

2022

Journal of Materials Research

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Cu-based shape memory alloys belong to one important class of functional alloys, presenting shape memory effect and superelasticity due to their reversible martensitic transformation. Although they have been extensively studied since the middle of the last century, there are still many challenges to be solved. In the last decades, these alloys were extensively studied regarding new compositions, processing routes, phase transformation, mechanical and functional properties. Aspects of the thermoelastic phase transformation have been described using thermodynamic and thermo-mechanical studies, while the role of metallurgical features (such as grain size and morphology, ordering, precipitates and second phases) have been described mainly by phenomenological approach. In this sense this review discusses the advances in the general fundamentals of Cu-based shape memory alloys, the recent developments in processing routes, compositions, and applications in the last years. Graphical abstract

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Section: Invited Feature Paper-reviewmentioning

confidence: 99%