Dynamic Interactions between Precipitation and Plastic Deformation in Aluminium Alloys

Alexis Deschamps; Frederic de Geuser; Christopher R. Hutchinson; Seung Won Lee; Zen Ji Horita

doi:10.4028/www.scientific.net/MSF.794-796.1133

Paper Titles

Microstructure and Mechanical Properties of D-SSF Processed Al-Zn-Mg Alloys with High Fe Content
p.1109

Melt Conditioned Twin Roll Casting (MC-TRC) for Aluminium Alloys
p.1115

Effect of Thermomechanical Processing on Electrical and Mechanical Properties of Aluminum Conductor Alloys
p.1121

The Effect of Homogenization Conditions on Extrusion Texture and Microstructure Evolution in AA3003
p.1127

Dynamic Interactions between Precipitation and Plastic Deformation in Aluminium Alloys
p.1133

The Evolution of Microstructure and Texture during Thermomechanical Processing of Al-Mg-Si-Cu Alloy
p.1141

Influence of Alloying Elements and Processing in AA 8006-Alloys on Microstructure and Properties of Rolled Products
p.1147

Effects of Cu or Li Addition and Multi-Step Aging Conditions on the Bake-Hardenability of an Al-Mg-Si Alloy
p.1152

Experimental and Numerical Investigations of the Plastic Deformation during Multi-Pass Asymmetric and Symmetric Rolling of High-Strength Aluminum Alloys
p.1157

HomeMaterials Science ForumMaterials Science Forum Vols. 794-796Dynamic Interactions between Precipitation and...

Dynamic Interactions between Precipitation and Plastic Deformation in Aluminium Alloys

Abstract:

Dynamic interactions between plastic deformation and precipitation processes in Aluminium alloys can lead to large changes in precipitation kinetics as compared to conventional heat treatments. This can be due to a number of different mechanisms such as changes in vacancy concentrations or movement of structural defects. Understanding the underlying mechanisms requires a quantitative measurement of the precipitate evolution as a function of deformation conditions, temperature and time. The present contribution will review experimental results obtained by Small-Angle X-ray Scattering in three different configurations, all concerning Al-Zn-Mg-Cu alloys: first, dynamic precipitate evolution during plastic deformation at ageing temperature; second, dynamic precipitation during low cycle fatigue at room temperature; and third, precipitation during ageing of a material processed by room temperature high pressure torsion. The experimental evidence will be used to discuss the role of the different mechanisms of interaction with plasticity on the precipitate microstructure evolution.