|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Magnesium Technology 2017
||Grain Refinement of Mg-Gd-Y-(Zr) Alloys through Squeeze Casting
||Cunlong Wang, Kaka Ma, Enrique J. Lavernia, Guohua Wu, Wencai Liu, Wenjiang Ding
|On-Site Speaker (Planned)
The Mg-10Gd-3Y (GW103) alloy and Mg-10Gd-3Y-0.5Zr (GW103K) alloy were successfully fabricated by squeeze casting (SC) under various applied pressures. The results show that grain size of both alloys was gradually refined through increasing the applied pressure. The grain refinement effect in the Zr-free alloy is limited, while the grain refining effect can be enhanced by combined applying of pressure and addition of Mg-Zr master alloy. Tensile test results show that both the yield strength and ultimate tensile strength are increased for both alloys when increasing the applied pressure. The strength enhancement for squeeze cast Mg alloys were mainly ascribed to the refinement of grain size and reduction of micro-pores.