镁合金熔体除气净化现状及未来展望  

Status and Prospect of Degassing and Purification of Magnesium Alloy Melt

作　　者：高忠玉 胡中潮 刘利辉 陈湖演 蔡健文 GAO Zhong-yu;HU Zhong-chao;LIU Li-hui;CHEN Hu-yan;CAI Jian-wen(TianjinNanuo Machinery Manufacturing Co.Ltd,Tianjin 300457,China;Foshan polytechnic,Foshan Guangdong 528137,China)

机构地区：[1]天津那诺机械制造有限公司,天津300457 [2]佛山职业技术学院,广东佛山528137

出　　处：《铸造设备与工艺》2021年第2期55-58,共4页Foundry Equipment & Technology

摘　　要：本文阐述了镁合金熔体中气体对于镁合金的危害,通过除气可以降低合金中的氢含量,从而减少微观组织缩松,提高合金的力学性能以及腐蚀性能。综述了活性气体、惰性气体、稀土除气、真空除气、超声波除气、旋转喷吹除气以及复合除气等各种镁合金除气方法及其应用特点。并对未来镁合金的除气方式进行了展望,复合净化既具有良好的除气效果同时也能去除熔体中的夹杂物,会成为未来研究的热点,但是净化的机理及相关工艺参数的研究有待深入。This paper describes the harm of gas to magnesium alloy,degassing can reduce the hydrogen content in the alloy,reduce the shrinkage porosity of microstructure,and improve the mechanical properties and corrosion resistance of the alloy.The degassing methods of magnesium alloys,such as active gas、inert gas,rare earth degassing、vacuum degassing、ultrasonic degassing、rotary degassing and composite degassing and their application characteristics are reviewed.The degassing methods of magnesium alloy in the future are prospected,the composite purification has good degassing effect and can also remove the inclusions in the melt,which will become a research hotspot in the future,however,the purification mechanism and related process parameters need to be further studied.

关 键 词：镁合金 除气 性能 组织 

分 类 号：TG146.21[一般工业技术—材料科学与工程]