Texture Evolution of AZ31 Magnesium Alloy Sheet at High Strain Rates

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

Description

Title: Texture Evolution of AZ31 Magnesium Alloy Sheet at High Strain Rates
Author/s:
  • Ulacia, I.
  • Yi, S.
  • Pérez Prado, María Teresa
  • Dudamell, N.V.
  • Gálvez Díaz-Rubio, Francisco
  • Letzig, D.
  • Hurtado, I.
Item Type: Presentation at Congress or Conference (Article)
Event Title: 4th International Conference on High Speed Forming
Event Dates: 09/03/2010 - 10/03/2010
Event Location: Columbus, Ohio, EEUU
Title of Book: Proceedings of the 4th International Conference on High Speed Forming
Date: 2010
Subjects:
Freetext Keywords: High strain rate, Magnesium Alloy, Texture
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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

More information

Item ID: 9193
DC Identifier: http://oa.upm.es/9193/
OAI Identifier: oai:oa.upm.es:9193
Deposited by: Memoria Investigacion
Deposited on: 19 Oct 2011 10:59
Last Modified: 25 Sep 2018 06:54
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