Nucleation at Cube Bands during Recrystallisation in Commercial Al Alloy

Olga Sukhopar; C. Schäfer; Günter Gottstein

doi:10.4028/www.scientific.net/AMR.89-91.533

Paper Titles

Physical Based Microstructure Modelling Coupled with Nucleation Theory during and after Hot Forming of AA5083
p.509

Measurement of Micro Residual Stresses Near the Grain Boundary in Copper Bicrystal
p.515

Influence of Second-Phase Particles on Microstructure Evolution and Mechanical Behavior of Ultrafine Grained Al-Alloys Produced by Severe Plastic Deformation
p.521

Finding the Optimum Cutting Conditions for Face Milling 13% Manganese Steel Using the Taguchi Design Method and Predictive Equations
p.527

Nucleation at Cube Bands during Recrystallisation in Commercial Al Alloy
p.533

Effect of Substrate Constraint on Stress-Induced Deformation Mechanism of Tungsten Thin Film
p.539

Residual Stress Evaluation of Railway Wheels by X-Ray Diffraction and Finite Element Method
p.545

Synchrotron µCT Investigation of the Collapsing Pore-Network of Gelatin Scaffolds under Compression
p.551

Microstructural Study of Copper and Copper/Alumina Composite Coatings Produced by Cold Spray Process
p.556

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Nucleation at Cube Bands during Recrystallisation in Commercial Al Alloy

Abstract:

In the present study, nucleation at Cube bands during annealing of a cold rolled commercial aluminium alloy AA8079 was investigated. The main goal of this work was to provide experimental data for subsequent modelling. By studying the deformed material the geometrical parameters of Cube bands were determined. The Cube band spacing in the deformed state was measured experimentally and accordingly calculated with a simple geometric model, taking the initial Cube fraction in the pre-deformed state and the deformation degree into account. The nucleation frequency during subsequent annealing of the cold deformed material was estimated from the geometry and size of deformed Cube bands prior to deformation. From investigations of the orientation relationship between the Cube oriented nuclei and the adjacent deformed matrix with S orientation, the fraction of 40°<111> grain boundaries having optimum growth conditions, was established.