Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/34596
metadata.artigo.dc.title: The influence of microstructure and mechanical resistance on the shape memory of ecae processed stainless Fe-Mn-Si-Cr-Ni-Co steel
metadata.artigo.dc.creator: Käfer, Karine Andrea
Bernardi, Heide Heloise
Santos, Osmar de Sousa
Otubo, Larissa
Lima, Nelson Batista de
Otubo, Jorge
metadata.artigo.dc.subject: Stainless shape memory steel
Equal Channel Angular Extrusion (ECAE)
Grain size
Second-phase particles
Martensitic transformation
metadata.artigo.dc.date.issued: 2018
metadata.artigo.dc.identifier.citation: KÄFER, K. A. et al. The influence of microstructure and mechanical resistance on the shape memory of ecae processed stainless Fe-Mn-Si-Cr-Ni-Co steel. Materials Research, São Carlos, v. 21, n. 5, 2018.
metadata.artigo.dc.description.abstract: In the current work, XRD, SEM, EBSD and TEM techniques were used to evaluate the microstructure of stainless Fe-Mn-Si-Cr-Ni-Co shape memory steel processed by ECAE and annealed for one hour at temperatures ranging from 650ºC to 950ºC. The results were then correlated with the mechanical and shape-memory properties of the steel. It was observed that the samples containing large grains and a microstructure free of defects or precipitates presented a high volume fraction of multi-variant thermal martensite and stress-induced martensite, resulting in good shape recovery, owing to the memory effect. The grain refinement and precipitation of second-phase particles decreased the volume fraction and number of martensite variants and considerably increased the mechanical resistance, enhancing the elastic shape recovery. It was shown that shape memory properties were essentially related to the mechanical resistance of the matrix, which in turn was related to the microstructure.
metadata.artigo.dc.identifier.uri: http://repositorio.ufla.br/jspui/handle/1/34596
metadata.artigo.dc.language: en_US
Appears in Collections:DEG - Artigos publicados em periódicos

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