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Título

Simulation of hot rolling processing of an Al-Cu-Mg alloy by torsion tests

AutorCarreño, Fernando; Cepeda-Jiménez, C.M.; Peñalba, F.; Carsí, Manuel; Ruano, Oscar Antonio
Palabras claveAluminium alloys
Thermomechanical processing
Modelling
Efficiency maps
Fecha de publicación2012
EditorTrans Tech Publications
CitaciónMaterials Science Forum 706-709 : 277-282 (2012)
ResumenHot torsion tests to fracture to simulate thermomechanical processing were carried out on a solution-treated Al-Cu-Mg alloy (Al 2024-T351) at constant temperature. Torsion tests were conducted to failure in the range 270 to 470ºC, between 2 and 26 s-1. A peak ductility of the 2024 alloy was found at about 410°C. The high temperature data was analyzed by means of a Garofalo equation, obtaining a stress exponent of 6.1 and an activation energy for deformation of 180 kJ/mol. These high temperature deformation parameters correspond to an underlying deformation mechanism of constant substructure (n=8) but experiencing increasing microstructure coarsening with increasing temperature. The workability of the alloy was characterized by maximum energy efficiency and stability maps constructed from the torsion tests data to determine optimal conditions for the forming process
DescripciónTHERMEC 2011
Versión del editorhttp;//dx.doi.org/10.4028/www.scientific.net/MSF.706-709.277
URIhttp://hdl.handle.net/10261/45333
DOI10.4028/www.scientific.net/MSF.706-709.277
ISSN1662-9752
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