Effect of rotating gas bubble stirring process parameters on purifying effectiveness and mechanical properties of sand-cast Mg-10Gd-3Y-0.5Zr alloy

被引：1
|
作者：
Mei, Jun [1 ,2 ]
Liu, Wencai [1 ,2 ,3 ]
Wu, Guohua [1 ,2 ]
Xiao, Lv [4 ]
Ding, Wenjiang [1 ,2 ]
机构：
[1] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloys Net Forming, Shanghai 200240, Peoples R China
[2] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composite, Shanghai 200240, Peoples R China
[3] Shanghai Light Alloy Net Forming Natl Engn Res Ct, Shanghai 201615, Peoples R China
[4] Shanghai Aviat Precis Machinery Res Inst, Shanghai 201600, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH | 2015年 / 30卷 / 02期
基金：
高等学校博士学科点专项科研基金;
关键词：
RARE-EARTH; DEFORMATION-BEHAVIOR; INCLUSION REMOVAL; MAGNESIUM ALLOYS; LIQUID STEEL; TECHNOLOGY; ELEMENTS; FLUX;
D O I：
10.1557/jmr.2014.368
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A continuous nonflux inclusion-removal method, rotating gas bubble stirring, is used to purify Mg-10Gd-3Y-0.5Zr melt. The effects of rotating gas bubble stirring process parameters (Ar flow rate, time, and rotating speed) on purifying effectiveness, mechanical properties, and fracture behavior of sand-cast Mg-10Gd-3Y-0.5Zr alloy are studied. The results show that too high or too low Ar flow rate is unfavorable for inclusion-removal. The results also indicate that the high rotary speed of spraying gas is helpful to improve the inclusion-removal and mechanical properties. But when the melt is subjected to overtime gas bubbling treatment, the mechanical properties became poor again. Nonflux purification does not change the microstructure of Mg-10Gd-3Y-0.5Zr alloy. However, rotating gas bubble stirring has a certain effect on the fracture pattern of the alloy. In addition, the melt purifying mechanism of the gas bubble stirring treatment for the sand-cast alloy was discussed systematically.
引用
收藏
页码：224 / 232
页数：9
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