About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Aluminum Alloys, Processing and Characterization
|
Presentation Title |
Evolution of Work Hardening in 6xxx Aluminum Alloys in the Course of Natural Aging Following Continuous Annealing |
Author(s) |
Christian Bollmann, Chengchao Yu, Mehdi Lalpoor, Alexis Miroux |
On-Site Speaker (Planned) |
Mehdi Lalpoor |
Abstract Scope |
The formability of Al sheet material is determined by its work hardening behaviour (WHB) up to the onset of strain localization. Under industrial production conditions of a continuous annealing line (CAL), the material undergoes various thermomechanical processing steps which may have an adverse effect on work hardening, i.e. natural aging and pre-aging. To understand the evolution of work hardening in a CAL, the impact of the main post-quench processing parameters of a CAL on the WHB of AA6016 and AA6005 were investigated experimentally by laboratory simulations. Based on the true stress σ - true strain ε curve, the work hardening θ=dσ⁄dε was characterized by the initial work hardening rate θ_0 and the dynamic recovery rate β=dθ⁄dσ. The investigation revealed that both parameters θ_0 and β decrease most in the course of natural aging after solution heat treatment and quenching, but subsequent processing steps also influence the WHB. |
Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Aluminum, Mechanical Properties, Phase Transformations |