|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Magnesium Technology 2017
||Modelling Magnesium Alloys for Improved Isotropic and Symmetric Yield Behaviour
||Alec Edward Davis, Joseph Robson
|On-Site Speaker (Planned)
||Alec Edward Davis
One of the main limitations of current wrought magnesium alloys is their high level of mechanical anisotropy and asymmetry. It has been proposed that careful choice of precipitates in age-hardenable wrought magnesium alloys may reduce anisotropy by selectively strengthening weaker deformation systems, reducing the inherent single crystal plastic anisotropy associated with the magnesium hexagonal close packed structure. In the present work, a model has been used to explore the ideal precipitate distribution, habit, and morphology to produce the most isotropic yield behaviour. The predictions of this model have been compared with the known precipitate characteristics in several promising magnesium alloy systems. It has been predicted that by selection of the correct alloy system, a desirable combination of high strength and greatly reduced anisotropy is attainable. This model based design approach is novel for magnesium alloys, and is currently being validated by manufacturing the optimised alloys.