|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Magnesium Technology 2016
||As Solidified Microstructure Investigation of Mg15Y and MgxYyGd (x+y=15 wt.%) Ternary Alloys
||Gabor Szakacs, Chamini Mendis, Norbert Hort, Karl Ulrich Kainer, Norbert Schell, Domonkos Tolnai, Ivana Stuliková, Marian Vlcek, Frantisek Lukác, Bohus Smola, Rainer Schmid Fetzer
|On-Site Speaker (Planned)
MgxYyGd (x+y=15 wt.%) alloys were produced via permanent mould casting to investigate the microstructure evolution during solidification of the ternary system. The microstructure of the as-solidified samples was characterized with SEM and TEM. In situ synchrotron radiation diffraction experiments were performed during the solidification of the alloys at the P07 (HEMS) Beamline of PETRA III at DESY. The phase evolution observed during controlled cooling at 20 and 100 K/min and the resultant microstructures were compared with the as-cast conditions. The experimental results were correlated with the calculations from the Pandat. In the case of the ternary alloys the equilibrium phase diagram suggests the Mg24Y5 phase formation on elevated temperatures followed by the formation of Mg5Gd phase at eutectic temperatures. However, the experiment shows only the formation of Mg24Y5 phase at eutectic temperatures even with a cooling rate of 100 K/min.
||Planned: A combination print-CD volume