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dc.contributor.author
Flausino, Paula Cibely Alves
dc.contributor.author
Nassif, Maria Elisa Landim
dc.contributor.author
de Castro Bubani, Franco
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dc.contributor.author
Pereira, Pedro Henrique R.
dc.contributor.author
Aguilar, Maria Teresa Paulino
dc.contributor.author
Cetlin, Paulo Roberto
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dc.date.available
2020-10-22T20:34:02Z
dc.date.issued
2019-05
dc.identifier.citation
Flausino, Paula Cibely Alves; Nassif, Maria Elisa Landim; de Castro Bubani, Franco; Pereira, Pedro Henrique R.; Aguilar, Maria Teresa Paulino; et al.; Microstructural evolution and mechanical behavior of copper processed by low strain amplitude multi-directional forging; Elsevier Science SA; Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing; 756; 5-2019; 474-483
dc.identifier.issn
0921-5093
dc.identifier.uri
http://hdl.handle.net/11336/116380
dc.description.abstract
Experiments were performed to analyze the microstructural evolution and mechanical behavior of commercial-purity copper (99.8%) processed by up to 48 cycles of multi-directional forging (MDF) using a low strain amplitude of ∼0.075 (total accumulated strain ε ≈ 10.8). Parabolic work-hardening concomitantly with increasing dislocation densities was observed up to ε ≈ 2, followed by a practically constant flow stress due to dynamic recovery. The average grain size was reduced from 30.5 μm in the annealed metal down to 4.1 μm for ε ≈ 7.2; the fraction of sub-micrometric grains reached ∼12% for ε ≈ 10.8. The microstructural changes were attributed to the fragmentation of the original grains by dislocation structures having low misorientation angles which gradually evolved into arrays of high-angle grain boundaries with increasing numbers of MDF cycles. The Cu samples subjected to 48 cycles of MDF displayed limited dynamic recrystallization, exhibiting basically dislocation cells and sub-grains with an average size of ∼0.6 μm. It is demonstrated that low strain amplitude MDF delays the kinetics of grain refinement in copper compared with MDF using higher strain amplitudes.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science SA
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
COPPER
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LOW STRAIN AMPLITUDE
dc.subject
MICROSTRUCTURAL EVOLUTION
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MULTI-DIRECTIONAL FORGING (MDF)
dc.subject
SEVERE PLASTIC DEFORMATION
dc.subject.classification
Ingeniería de los Materiales
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dc.subject.classification
Ingeniería de los Materiales
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Microstructural evolution and mechanical behavior of copper processed by low strain amplitude multi-directional forging
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-10-07T13:57:55Z
dc.journal.volume
756
dc.journal.pagination
474-483
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Flausino, Paula Cibely Alves. Universidade Federal de Ouro Preto; Brasil. Universidade Federal de Minas Gerais; Brasil
dc.description.fil
Fil: Nassif, Maria Elisa Landim. Universidade Federal de Minas Gerais; Brasil
dc.description.fil
Fil: de Castro Bubani, Franco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Universidad Nacional de Cuyo; Argentina. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina
dc.description.fil
Fil: Pereira, Pedro Henrique R.. Universidade Federal de Minas Gerais; Brasil
dc.description.fil
Fil: Aguilar, Maria Teresa Paulino. Universidade Federal de Minas Gerais; Brasil
dc.description.fil
Fil: Cetlin, Paulo Roberto. Universidade Federal de Minas Gerais; Brasil
dc.journal.title
Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.msea.2019.04.075
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0921509319305489
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