Artículo
Tomographic characterization of copper cellular bodies fabricated by a powder metallurgy route
Malachevsky, Maria Teresa
; Bertolino, Graciela Mabel
; Oliber, Edgardo Antonio; D'Ovidio, C.; Baruj, Alberto Leonardo
; Cuscueta, Diego Javier
Fecha de publicación:
13/02/2019
Editorial:
Institute of Physics Publishing
Revista:
Materials Research Express
e-ISSN:
2053-1591
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Copper cellular bodies were prepared by powder metallurgy employing carbamide beads as space holders, which were removed by water dissolution before sintering the compact. The method allows for a precise control of the cell characteristics (size, shape and distribution) within an interconnected porosity. Even if the cell walls are well sintered, the use of metal powder promotes the formation of an inherent porosity that affects the mechanical properties of the foam, leading to plastic failure at a low stress. The foam structure characterization was accomplished by x-ray tomography. This technique allows a 3D visualization of the cells distribution, a complete characterization of the cells structure and the evaluation of the sample porosity and connectivity. With the aid of the tomographic slices, we can visually follow the cell walls failure during a compression test, identifying the deformation mechanism. A simple model was validated for the determination of porosity and plastic failure stress.
Palabras clave:
COPPER FOAM
,
POWDER METALLURGY
,
X-RAY TOMOGRAPHY
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Licencia
Identificadores
Colecciones
Articulos(CCT - PATAGONIA NORTE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - PATAGONIA NORTE
Citación
Malachevsky, Maria Teresa; Bertolino, Graciela Mabel; Oliber, Edgardo Antonio; D'Ovidio, C.; Baruj, Alberto Leonardo; et al.; Tomographic characterization of copper cellular bodies fabricated by a powder metallurgy route; Institute of Physics Publishing; Materials Research Express; 6; 5; 13-2-2019; 1-11
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