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dc.contributor.author
Malamud, Florencia
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dc.contributor.author
Santisteban, Javier Roberto
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dc.contributor.author
Gao, Yan
dc.contributor.author
Shinohara, Takenao
dc.contributor.author
Oikawa, Kenichi
dc.contributor.author
Tremsin, Anton
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dc.date.available
2023-10-25T16:04:34Z
dc.date.issued
2022-04
dc.identifier.citation
Malamud, Florencia; Santisteban, Javier Roberto; Gao, Yan; Shinohara, Takenao; Oikawa, Kenichi; et al.; Non-destructive characterization of the spatial variation of γ/γ' lattice misfit in a single-crystal Ni-based superalloy by energy-resolved neutron imaging; Wiley Blackwell Publishing, Inc; Journal Of Applied Crystallography; 55; 2; 4-2022; 228-239
dc.identifier.uri
http://hdl.handle.net/11336/215938
dc.description.abstract
Lattice misfit in nickel-based superalloys is one of the important microstructural parameters that control their mechanical properties, such as creep behaviour at high temperatures. Here, energy-resolved neutron imaging experiments are performed at a spallation neutron source to determine the spatial variation of lattice misfit on a second-generation nickel-based single-crystal superalloy specimen produced from a failed low-cycle fatigue specimen. The wavelength spectrum of the neutrons scattered by the specimen displays a large number of peaks, each corresponding to a spot in traditional Laue diffraction experiments. An analysis of the position and width of those Laue peaks in the transmission spectra allows determination of the lattice parameters of the γ and γ' phases that compose the specimen, as well as the strain misfit and the misorientation between them. An analytical model is developed to describe the full wavelength pattern of Laue peaks arising from a specimen composed of two single crystals, and this model is used to perform least-squares refinements of the spectra measured at different positions of the specimen, with a spatial resolution of ~500 × 500 mm. The local variations of the lattice parameter across the sample area were less than 4 mÅ for both phases, and the lattice misfit remains essentially constant at a value of 0.30 ± 0.03%, whilst the misorientation between the two phases is always smaller than 10'. By contrast, the relative misorientation between different parts of the specimen varies locally up to 1.5º on a scale of millimetres.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
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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
ENERGY-RESOLVED NEUTRON IMAGING
dc.subject
LATTICE MISFIT
dc.subject
NI-BASED SUPERALLOYS
dc.subject.classification
Física de los Materiales Condensados
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Non-destructive characterization of the spatial variation of γ/γ' lattice misfit in a single-crystal Ni-based superalloy by energy-resolved neutron imaging
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2023-10-25T12:50:53Z
dc.identifier.eissn
1600-5767
dc.journal.volume
55
dc.journal.number
2
dc.journal.pagination
228-239
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Malamud, Florencia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Paul Scherrer Institute; Suiza. Comision Nacional de Energia Atomica. Gerencia de Area de Investigaciones y Aplicaciones No Nucleares (cac). Departamento Administracion del Proyecto Laboratorio Haces de Neutrones Ra-10 (cac).; Argentina
dc.description.fil
Fil: Santisteban, Javier Roberto. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. Comision Nacional de Energia Atomica. Gerencia de Area de Investigaciones y Aplicaciones No Nucleares (cac). Departamento Administracion del Proyecto Laboratorio Haces de Neutrones Ra-10 (cac).; Argentina
dc.description.fil
Fil: Gao, Yan. Global Research Center; Estados Unidos
dc.description.fil
Fil: Shinohara, Takenao. Japan Atomic Energy Agency; Japón
dc.description.fil
Fil: Oikawa, Kenichi. Japan Atomic Energy Agency; Japón
dc.description.fil
Fil: Tremsin, Anton. University of California at Berkeley; Estados Unidos
dc.journal.title
Journal Of Applied Crystallography
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://scripts.iucr.org/cgi-bin/paper?S1600576722000164
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1107/S1600576722000164
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