|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Defects and Properties of Cast Metals
||Influence of Geometry and Aluminum Content on the Microstructure and Tensile Behavior of HPDC Mg AM Series Alloys
||Erin Deda, John Allison
|On-Site Speaker (Planned)
The mechanical properties of high pressure die cast (HPDC) magnesium can be highly variable and dependent on the manufacturing process history and on location within a casting. This investigation is providing experimental input to modeling activities for the development of an ICME capability, to assess and quantify the impact of aluminum content and section thickness on the microstructure and tensile behavior of HPDC Mg AM series (magnesium-aluminum-manganese) alloys. Eight conditions of varying thickness and aluminum content were super vacuum die cast and characterized via quantitative metallography and uniaxial tensile testing. Plates were solution treated and processed by hot isostatic pressing (HIP) to identify the effect of different microstructural features, beta phase and shrinkage porosity, on the mechanical behavior. Models for both yield strength and ductility have been developed to predict the influence of aluminum content and sample thickness.
||Planned: Supplemental Proceedings volume