About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Magnesium Technology 2023
|
Presentation Title |
Combined Effect of Alloying and Grain Size on the Deformation Behavior of Magnesium Alloys |
Author(s) |
Arul Kumar Mariyappan |
On-Site Speaker (Planned) |
Arul Kumar Mariyappan |
Abstract Scope |
Hexagonal-close-packed (HCP) magnesium metals are widely used in different industries due to their low-density and high specific-strength. Their applicability is restricted due to poor formability and pronounced plastic anisotropy. Commonly, the formability is improved by altering the chemistry (adding rare-earth elements like Y) or modulating the microstructure (e.g., grain-refinement). Grain-refinement alone cannot yield the desired ductility, and the scarcity of rare-earth elements also limits the alloying addition. In this work, using the crystal-plasticity framework, the combined effect of Y-content and grain size on the mechanical responses of Mg alloy is studied. The influence of alloying is represented by varying the activation stress and hardening responses of basal, prismatic, pyramidal slip, and tensile twin systems. This detailed study provides a map of strength and tension-compression asymmetry for a wide range of Y-content and grain sizes. This work provides a pathway to optimize the microstructure and chemistry to achieve excellent structural properties. |
Proceedings Inclusion? |
Planned: |
Keywords |
Magnesium, Modeling and Simulation, Mechanical Properties |