|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Applications of Solidification Fundamentals
||Quantifying Dendritic Evolution in Mg Alloys Using In Situ Synchrotron Tomography
||Enyu Guo, André Phillion, Daniil Kazantsev, Sansan Shuai, Tao Jing, Peter D Lee
|On-Site Speaker (Planned)
In situ synchrotron X-ray tomography offers a unique tool to quantify microstructural evolution in materials, allowing the kinetics of transformations to be quantified in real time. In this study, the 4D (3D plus time) evolution of α-Mg dendrites in semi-solid Mg-Zn alloys was investigated via fast synchrotron tomography. Isothermal coarsening of Mg primary dendrites was characterized and quantified in the semi-solid state via measuring the evolution of specific surface area and liquid-solid interface curvature. The effect of Zn concentration and the cooling path during the initial solidification on the morphologic evolution and subsequent coarsening was presented and discussed. The results demonstrate the strong influence of alloy composition and semi-solid processing parameters upon final microstructure, and will also act to inform and validate numerical models of microstructural evolution for semi-solid Mg alloys.
||Planned: Supplemental Proceedings volume