DEFORMATION MICROSTRUCTURE AND TEXTURE EVOLUTION OF {110}<112> Al-0.3wt.%Mn SINGLE CRYSTALS COMPRESSED IN A CHANNEL-DIE

Abstract : Crystal subdivision patterns of microbands have been extensively reported but mostly by studies on only one section, using either TEM or SEM-EBSD. To better correlate substructure with slip patterns a systematic study of the 3D deformation microstructure in a deformed single crystal (i.e. over the 3 perpendicular surfaces) has been carried out. The microstructure and microtexture evolutions during plane strain deformation of high purity single crystals of Al-0.3%wt.Mn alloy with initial ideal and near-brass{110}<112> orientations were characterised by TEM and high resolution FEG-SEM/EBSD after strains of 0.15 and 0.56. These two different techniques enable one to examine the crystal subdivision deformation pattern at different microscopic scales, on the 3 orthogonal sections, i.e. perpendicular to the nominal <110>, <112> and <111> crystallographic directions. Particular attention is paid to a comparison of the microband orientations with the expected slip traces of the 2 active slip systems on all 3 surfaces. It is concluded that the microband boundary alignment corresponds very well to the traces of the crystallographic {111} planes, on which most of the slip occurs.
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Article dans une revue
Archives of Metallurgy and Materials, Versita, 2009, 54 (1), pp.65-74
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https://hal-emse.ccsd.cnrs.fr/emse-00508791
Contributeur : David Piot <>
Soumis le : jeudi 5 août 2010 - 17:39:43
Dernière modification le : jeudi 11 janvier 2018 - 06:15:39

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  • HAL Id : emse-00508791, version 1

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Henryk Paul, Julian Driver, Claire Maurice, Magdalena Miszczyk, David Piot. DEFORMATION MICROSTRUCTURE AND TEXTURE EVOLUTION OF {110}<112> Al-0.3wt.%Mn SINGLE CRYSTALS COMPRESSED IN A CHANNEL-DIE. Archives of Metallurgy and Materials, Versita, 2009, 54 (1), pp.65-74. 〈emse-00508791〉

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