|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals, and Materials
||Texture Evolution of Binary Mg-Gd Alloys during Extrusion
||Aidin Imandoust, Haitham El Kadiri
|On-Site Speaker (Planned)
Gadolinium (Gd) is a renowned element as a texture modifier for Magnesium alloys over the course of dynamic recrystallization. In fact, Gd addition manifests itself by influencing texture evolutions through altering the characteristics of dynamic recrystallization during thermo-mechanical processing such as extrusion. However, the effect of Gd on the dynamic recrystallization and the subsequent effects on the texture evolution is yet to be clarified. In this regard, three binary Mg-Gd alloys with Gd content of 0.39, 0.96 and 2.53 wt. % were cast along with pure Mg so as to investigate their microstructure and texture evolution during hot extrusion. Extrusion processes were conducted at 450 ºC with area reduction ratio of 1:6 and 1:25 at ram speeds of 10 and 40 mm/min. Experimental results showed that Gd addition modifies the extrusion texture by promoting the nucleation of grains with new orientations on grain boundaries, which have growth preference.
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