镁-铝合金中Mg_(17)Al_(12)相形态改善技术的研究现状  

Research status of methods of improving the morphology of Mg_(17)Al_(12) phase in magnesium aluminum alloy

作　　者：牛田刚 乔军[1] 边福勃[1] 宋岳[1] 李素山 

机构地区：[1]辽宁科技大学材料与冶金学院,辽宁鞍山114000

出　　处：《轻合金加工技术》2014年第8期13-17,32,共6页Light Alloy Fabrication Technology

基　　金：国家自然科学基金资助项目(50801034);辽宁省高等学校杰出青年学者成才计划资助项目(LJQ2011026);辽宁省十百千高端人才引进工程资助项目(207)

摘　　要：综述了改变镁-铝合金中β-Mg17Al12相形态的技术,主要包括:快速凝固、机械形变、合金化处理、熔体搅拌和热处理等。镁-铝合金主要由α-Mg固溶体和β-Mg17Al12相组成,处理前Mg17Al12相呈粗大网状连续分布在晶界,且分布不规则;处理后其形态变得细小均匀,弥散分布在α-Mg基体中。最后根据各种技术的工作原理,对其提出了一些展望,期待这些技术更加成熟,得到更加广泛地使用。The methods of improving the morphology of β-Mg17Al12 phase in magnesium aluminum alloy were summarized in this article, including rapid solidification, mechanical deformation, alloying treatment, melt-stirring method ,heat treatment and so on. The magnesium aluminum alloy mainly consists of α-Mg matrix and β-Mg17Al12 phase. The Mg17 Al12 phase distributed continuously and irregularly at the boundary like a coarse mesh before treatment; it became fine, uniform and dispersed in α-Mg matrix after treatment. Finally, according to the working principles of these technologies, some improvement methods were proposed in order to make the technologies more mature and used more widely.

关 键 词：镁铝合金 β—Mg17 Al12相 等通道角挤压 变通道角挤压 快速凝固 超声处理 

分 类 号：TG146.22[一般工业技术—材料科学与工程]