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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium Material Behavior Characterization via Multi-Directional Deformation of Sheet Metal
Presentation Title K-137 (Invited): Understanding Room Temperature Softening Behavior in AA5182
Author(s) Atish Ray, John E. Carsley, DaeHoon Kang
On-Site Speaker (Planned) John E. Carsley
Abstract Scope AA5182 is a commonly used in the beverage can industry for lid fabrication. As with any Al-Mg alloy in the 5xxx series, the post-deformation microstructure of AA5182 is not completely stable, which allows slow internal structural relaxation of the stress state over time, even at room temperature. Such relaxation can result in loss of buckle strength of the formed can end. In this work, we present our understanding of the low temperature softening mechanisms in various Al-Mg alloys in terms of the transient nature of the heavily deformed 5xxx microstructure by analyzing the stress relaxation data and correlating with evolution of the dislocation substructure. High resolution EBSD, TEM and X-ray line profile analyses were used to characterize the deformed microstructure. The evolution of softening is addressed by the interaction of Mg atoms with the mobile and forest dislocations.
Proceedings Inclusion? Planned: Supplemental Proceedings volume


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K-137 (Invited): Understanding Room Temperature Softening Behavior in AA5182
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