Mechanisms of New Orientation Formation during Recrystallization of Old Deformed Aluminium Bicrystals

Henryk Paul; Julian H. Driver; Arnaud Lens

doi:10.4028/www.scientific.net/MSF.495-497.1249

Paper Titles

Micromechanisms Involved in Grain Boundary Engineering
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Effect of Hexagonal Crystal Structure Anisotropy on the Selective Grain Boundary Mobility during Texture Formation and Secondary Recrystallization in Zn
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Prediction of Earing in IF Steels by Using Crystal Plasticity Finite Element Method
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Effect of Stacking Fault Energy on Evolution of Recrystallization Textures in Drawn Wires and Rolled Sheets
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Mechanisms of New Orientation Formation during Recrystallization of Old Deformed Aluminium Bicrystals
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Grain Boundary Energy and Grain Growth in Highly-Textured Al Films and Foils: Experiment and Simulation
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The Effects of a High Magnetic Field on Microstructure, Grain Boundary Structures and Texture in a Medium Carbon Steel under Different Cooling Rates
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α→γ→α Transformation Texture Formation at Cold-Rolled Ultra Low Carbon Steel Surfaces
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Origins of Cube Recrystallization Textures in Heavily Rolled High Purity Al
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Mechanisms of New Orientation Formation during Recrystallization of Old Deformed Aluminium Bicrystals

Abstract:

The crystallography of recrystallization nucleation has been investigated in channel-die deformed pure aluminium bicrystals with {100}<011>/{110}<001> and {100}<001>/{110}<001> orientations. The new grain orientations and misorientations were followed by systematic local orientation measurements using SEM and semi-automatic measurements in a TEM. In particular, orientation mapping combined with in-situ sample heating was used to investigate the formation and growth of new grains and their crystallographic orientation changes at very early stages of recrystallization. Grain boundary migration and ‘consumption’ of the as-deformed areas was always favoured along directions parallel to the traces of the {111} slip planes that had been most active during deformation. The orientations of the first formed nuclei were misoriented with respect to the orientations identified within the neighbouring deformed areas by α(<111>, <112>, or <100>)relations.