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Effect of Flux Purification on Fluidity of Mg-Gd-Y-Zr Magnesium Alloy

HUANG Yu-guang1,2,WU Guo-hua1,2,WANG Wei1,2,HOU Zheng-quan3,CHEN Bin3,DING Wen-jiang1,2(1. National Engineering Research Center of Light Alloy Net Forming,Shanghai Jiaotong University,Shanghai 200240,China;2. State Key Laboratory of Metal Matrix Composites,Shanghai Jiaotong University,Shanghai 200240,China;3. Shanghai Space Flight Precision Machinery Research Institute,Shanghai 201600,China)  
Influences of different fluxes purification including RJ-6,RJ-6+5%GdCl3,RJ-6+5%YCl3,JDMJ+ X%GdCl3,JDMJ+X%YCl3 on the fluidity of Mg-10Gd-3Y-Zr magnesium alloy have been studied. The results show that,JDMJ+5%YCl3 flux and RJ-6+5%GdCl3 flux can significantly improve the fluidity of the Mg-10Gd-3Y-Zr magnesium alloy,the length of the samples of fluidity was increased from 780 mm to 1 270 mm and 1 113 mm,respectively. The inclusions quantitative analytical method was employed in the experiments and the results show that RJ-6+5%GdCl3 flux and JDMJ+5%YCl3 flux can greatly reduce the inclusions,decrease the viscosity and improve the fluidity of magnesium alloy.
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