不同磁场作用对AZ31镁合金的凝固组织的影响  

Effect of magnetostatic field on the microstructure of magnesium alloy AZ31

作　　者：包卫平[1] 许光明[1] 郑佳伟[1] 崔建忠[1] 

机构地区：[1]东北大学材料电磁过程研究教育部重点实验室,辽宁沈阳110004

出　　处：《材料与冶金学报》2003年第3期216-219,共4页Journal of Materials and Metallurgy

基　　金：国家‘973’资助项目(G1999064905)

摘　　要：镁合金是具有优越性能的金属材料,镁合金的加工是目前国内外正在深入进行研究的新课题.实验发现在镁合金的凝固过程中施加低频或静态磁场都能细化晶粒,但静磁场得到的细化效果要优于低频交流磁场,同时随磁感应强度的增加,静磁场细化晶粒的效果明显提高;在静磁场条件下晶界共晶体组织的厚度明显减小,同时在晶内出现了大量细小块状化合物,这有利于改善镁合金的综合性能.Magnesium alloy is a material with excellent performance , and its deformation is the recent problem to be researched profoundly in the world . The experimental results show that the grain is refined when the magnesium alloy solidifies under magnetic field , especially under magnetostatic field. The higher the magnetic density is. the finer is the grain. Also, the thickness of eutectic boundary decreased , and much fine massive compound appears. Therefore the forming property of magnesium alloy is improved when magnesium alloy solidifies under magnetostatic field .

关 键 词：镁合金 电磁场 共晶体 化合物 

分 类 号：TG14[一般工业技术—材料科学与工程]