Mg-30%Ce对Al-Si-0.5Gd合金微观组织和显微硬度的影响  

Effect of Mg-30%Ce on Microstructures and Mechanical Properties of Alloy Al-Si-0.5Gd

作　　者：尹冬松[1] 张忠凯 田帅[1,3] 张春雨 王春阳 王振铃[1] 于玉成 安勇良[1] 李州 庞前涛 李青山[2] 陈睿[2] 

机构地区：[1]黑龙江科技大学材料科学与工程学院,黑龙江哈尔滨150022 [2]哈尔滨东盛金属材料有限公司,黑龙江哈尔滨150000 [3]太重集团榆次液压工业有限公司,山西晋中030600

出　　处：《铸造技术》2015年第10期2411-2414,共4页Foundry Technology

基　　金：黑龙江省应用技术研究开发计划资助项目(GC13A104)

摘　　要：研究了Mg-30%Ce添加对Al-Si-0.5Gd合金微观组织和显微硬度的影响。结果表明,Mg-30%Ce能够细化铸态Al-Si-0.5Gd合金的显微组织。随着Mg-30%Ce添加量的增加,细化效果更加明显,但当Ce含量为0.9%时,细化效果不再增强。添加Mg-30%Ce后,合金晶粒边界处出现含Ce稀土相。随添加量的增加,该相明显增加,合金的显微硬度呈现上升的趋势。当Ce含量为0.9%时,显微硬度开始降低。The effect of Mg-30% Ce addition on the microstructures and microhardness of the alloy Al-Si-0.5Gd was investigated.The results show that the microstructure of the as-cast alloy Al-Si-0.5Gd can be refined after adding Mg-30%Ce into the alloy.The refining effect becomes better with the increase of Mg-30%Ce addition,but the refining effect is not enhanced when the content of Mg-30%Ce is 0.9%.The Ce-contained rare earth phases appear at the grain boundary of the alloy after adding Mg-30%Ce,and the rare earth phase increase with the increase of the Mg-30%Ce addition and thus the hardness of the alloy increases.However,the microhardness of the alloy decreases significantly when the content of Mg-30%Ce reaches 0.9%.

关 键 词：铝合金 Mg-30%Ce 细化 显微硬度 

分 类 号：TG146.21[一般工业技术—材料科学与工程]