|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Magnesium Technology 2021
||Microstructural characterization and hardness of rapidly solidified Mg-Si alloys
||Guilherme Lisboa de Gouveia, Josť Eduardo Spinelli
|On-Site Speaker (Planned)
||Guilherme Lisboa de Gouveia
Mg-Si alloys are great opportunities in the application as biodegradable bone implants due to their mechanical properties and non-harmful degradative characteristics in biological environments. However, the literature is scarce on studies focused on the correlation between structural and mechanical parameters in hypoeutectic Mg-Si alloys. This is explained from the challenges presented by the production of such alloys. The present study examines the experimental interrelations between microstructures and mechanical properties of the Mg-0.5wt.%Si, Mg-0.75wt.%Si and Mg-1wt.%Si alloys produced by centrifugal casting. For this, Mg-Si alloys samples with a stepped solidified shape were produced and subjected to microstructural, chemical and mechanical characterizations. The results demonstrate the occurrence of the Mg and Mg2Si phases in different proportions for each alloy of interest. Furthermore, the increase of the hardness with the increase of the Si content and, less markedly, with the decrease of the sample diameter. Quantification by measuring microstructural spacing will be outlined.