Impactos Das Tecnologias Nas Engenharias 4 2019
DOI: 10.22533/at.ed.94719150313
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Caracterização Mecânica E Microestrutural De Ligas Cu-Al-Mn Passíveis Do Efeito Memória De Forma Envelhecidas

Abstract: Elaborado por Maurício Amormino Júnior-CRB6/2422 O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. 2019 Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais. www.atenaeditora.com.br APRESENTAÇÃO Caro leitor(a) Nesta obra temos um compendio de pesquisas realizadas por alunos e professores atuantes em engenh… Show more

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“…The loss of the shape recovery capacity (increase in residual deflection) observed after the thermomechanical cycling through the increase of the transformation temperatures and the microhardness may be related to the decrease of the orthorhombic martensitic phase β'1, when the martensitic phase γ'1 (less ductile than phase β'1) emerges and increases. Moreover, the mechanical work resulting from the deflection of the sample may have produced microstructural defects (dislocations) in the material, which ones reduces the nucleating sites of the embryos of the orthorhombic phase martensitic transformation, acting as an obstacle to the movement of the martensite plates, making the shape memory effect occur at higher temperatures and with a lower intensity (shape recovery capacity) [2]. The changes in the behavior of the material related to the transformation temperatures, microhardness and shape recovery capacity, induces by the DCT suggest that this one induces the β'1 phase stabilization.…”
Section: Shape Recovery Capacitymentioning
confidence: 99%
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“…The loss of the shape recovery capacity (increase in residual deflection) observed after the thermomechanical cycling through the increase of the transformation temperatures and the microhardness may be related to the decrease of the orthorhombic martensitic phase β'1, when the martensitic phase γ'1 (less ductile than phase β'1) emerges and increases. Moreover, the mechanical work resulting from the deflection of the sample may have produced microstructural defects (dislocations) in the material, which ones reduces the nucleating sites of the embryos of the orthorhombic phase martensitic transformation, acting as an obstacle to the movement of the martensite plates, making the shape memory effect occur at higher temperatures and with a lower intensity (shape recovery capacity) [2]. The changes in the behavior of the material related to the transformation temperatures, microhardness and shape recovery capacity, induces by the DCT suggest that this one induces the β'1 phase stabilization.…”
Section: Shape Recovery Capacitymentioning
confidence: 99%
“…Compared with NiTi alloys, Cu-Al-Ni alloys have thermo-mechanical and shape-recovery properties at higher temperatures and a lower production cost, which justifies the use in industrial applications . [2]. However, one of the problems that reduce the application of Cu-Al-Ni alloys is the propensity to decrease the stabilization capacity of the martensitic / austenitic phases.…”
Section: Introductionmentioning
confidence: 99%