|About this Abstract
||2012 TMS Annual Meeting & Exhibition
||Magnesium Technology 2012
||K-21: Influence of Zinc-Yttrium Ratio and Cerium on the Mechanical Properties of Hot Rolled and Friction Stir Processed Mg-Zn-Y Alloys
||Arun Mohan, Rajiv Mishra, Ravi Verma
|On-Site Speaker (Planned)
Four different alloys with Zn-Y weight % ratio ranging from 0.2 to 0.71 with a total alloying content similar to AZ31 alloy were hot rolled. Two different levels of Cerium were used. Cerium has been reported to increase ductility and decrease anisotropy. In order to maximize the impact of alloying addition, aging studies were conducted at 160°C, 190°C and 220°C for duration up to 8 days. An optimum aging condition was chosen based on peak hardness values. In the current work, microstructure and tensile properties of the as rolled, rolled+aged, friction stir processed (FSP) and FSP+aged sheets were evaluated and correlated with texture and alloy chemistry. Finally, mechanical properties of Mg-Zn-Y sheets were compared with direct chill cast and twin roll cast AZ31 sheets to establish the levels of reduction in anisotropy and improvements in strength and ductility.
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