|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||In-situ Methods for Unraveling Structure-Property Relationships in Light Metals
||3D Microstructural Evolution on Solidifying Mg-5Nd-5Zn Alloy Observed via In Situ Synchrotron Tomography
||Tungky Subroto, Chamini Lakshi Mendis, Francesco D'Elia, Gábor Szakács, Julie L. Fife, Norbert Hort , Karl Ulrich Kainer, Domonkos Tolnai
|On-Site Speaker (Planned)
Synchrotron tomography is a unique technique to study 3D microstructure evolution during solidification owing to high brilliance of the beam and the short acquisition time of the detector systems. In this work, in situ X-ray tomography observations were performed during the solidification of Mg-5Nd-5Zn alloy with different cooling rates (5 and 20 K/min). The experiments were performed at the TOMCAT beamline of the Swiss Light Source (PSI, Switzerland). The samples were locally molten by a laser-based heating system and then cooled to the end of solidification. Tomographies were acquired every 5 K during cooling, starting from the fully liquid state until the solidification is completed to follow the evolution of the internal architecture as solidification proceeds. The volume fraction of the phases (i.e. pore, dendrites and interdendritic liquid), morphology and orientation of the growing dendrites, and the effect of cooling rates on the different microstructural features during solidification are discussed.