Texture Evolution of AZ31 Magnesium Alloy Sheet at High Strain Rates

Ulacia, I.; Yi, S.; Pérez Prado, María Teresa; Dudamell, N.V.; Galvez Diaz-Rubio, Francisco; Letzig, D. y Hurtado, I. (2010). Texture Evolution of AZ31 Magnesium Alloy Sheet at High Strain Rates. En: "4th International Conference on High Speed Forming", 09/03/2010 - 10/03/2010, Columbus, Ohio, EEUU.

Descripción

Título: Texture Evolution of AZ31 Magnesium Alloy Sheet at High Strain Rates
Autor/es:
  • Ulacia, I.
  • Yi, S.
  • Pérez Prado, María Teresa
  • Dudamell, N.V.
  • Galvez Diaz-Rubio, Francisco
  • Letzig, D.
  • Hurtado, I.
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: 4th International Conference on High Speed Forming
Fechas del Evento: 09/03/2010 - 10/03/2010
Lugar del Evento: Columbus, Ohio, EEUU
Título del Libro: Proceedings of the 4th International Conference on High Speed Forming
Fecha: 2010
Materias:
Palabras Clave Informales: High strain rate, Magnesium Alloy, Texture
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ciencia de los Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

In the current contribution the mechanical behaviour at high strain rates of AZ31 magnesium alloy sheet is studied. Uniaxial deformation properties were studied by means of tensile split Hopkinson pressure bar (SHPB) at different temperatures. The influence of the strain rate and temperature on the deformation mechanisms was investigated by means of electron backscatter diffraction (EBSD) and neutron diffraction. It is shown that twinning plays an important role on high strain rate deformation of this alloy, even at elevated temperatures. Significant evidence of prismatic slip as a deformation mechanism is observed, also at warm temperatures, leading to the alignment of <10-10> directions with the tensile axis and to a spread of the intensities of the basal pole figure towards the in-plane direction perpendicular to the tensile axis. The rate of decrease of the CRSS of non-basal systems is observed to be slower than at quasi-static rates. Secondary twinning and pyramidal <c+a> slip were also outlined for some conditions. At warm temperatures, in contrast to quasi-static range, a generalized dynamic recrystallization is not observed. Moreover, the activation of rotational recrystallization mechanisms is reported

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ID de Registro: 9193
Identificador DC: http://oa.upm.es/9193/
Identificador OAI: oai:oa.upm.es:9193
Depositado por: Memoria Investigacion
Depositado el: 19 Oct 2011 10:59
Ultima Modificación: 20 Abr 2016 17:42
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