English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/109997
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 20 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar otros formatos: Exportar EndNote (RIS)Exportar EndNote (RIS)Exportar EndNote (RIS)
Título

Study of hot deformation of an Al-Cu-Mg alloy using processing maps and microstructural characterization

Autor Cepeda-Jiménez, C.M.; Ruano, Oscar Antonio; Carsí, Manuel; Carreño, Fernando
Palabras clave Electron backscatter diffraction-EBSD
Mechanical characterization
Aluminium alloys
Hot deformation
Recrystallization
Processing maps
Fecha de publicación 30-ago-2012
EditorElsevier
Citación Materials Science and Engineering A 552: 530-539 (2012)
ResumenThe forming behaviour of an Al–Cu–Mg alloy (Al 2024-T351) has been studied by processing maps and microstructural characterization. Torsion tests were conducted in the range 278–467 ◦C, between 2.1 and 25.6 s−1. Stress–strain curves obtained from the experiment data were fitted using the Garofalo equation to obtain the constitutive parameters, obtaining a stress exponent of 6.1 and an activation energy of 180 kJ/mol. Electron backscatter diffraction (EBSD) was employed to characterize the microtexture and microstructure, before and after torsion testing, to evaluate the microstructural changes and instability phenomena. A peak ductility of the Al 2024 alloy was found at about 400 ◦C at all strain rates considered. According to the processing maps and microstructure observation, the optimum hot deformation condition for the Al 2024 alloy is in the range 360–410 ◦C and 2.1–4.5 s−1. Under these favourable conditions a uniform and fine grain size is obtained by extended dynamic recovery (DRV), which leads to the formation of subgrain boundaries that progressively transform at large strains into new high angle grain boundaries
Versión del editorhttp://dx.doi.org/10.1016/j.msea.2012.05.082
URI http://hdl.handle.net/10261/109997
DOI10.1016/j.msea.2012.05.082
ISSN0921-5093
Aparece en las colecciones: (CENIM) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Mater Sci Eng A-2012-CM Cepeda-Jiménez et al.pdf1,79 MBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.