Al-Mg_2Si原位复合材料的变质及添加合金元素  

Modification and Alloying Element Addition of Al-Mg_2Si In-situ Composite

作　　者：王东涛[1] 张海涛[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,沈阳110819

出　　处：《材料导报》2016年第7期138-142,共5页Materials Reports

基　　金：国家自然科学基金青年科学基金(51204046)

摘　　要：Al-Mg_2Si原位复合材料由于其优良的性能已经广泛应用在航空和汽车工业中。介绍了磷、稀土、锶等变质元素对初晶和共晶Mg2Si相良好的变质效果,以及不同变质元素的变质机理;并讨论了不同合金元素的添加对Al-Mg_2Si原位复合材料的组织以及力学性能的影响。通过总结国内外关于Al-Mg_2Si原位复合材料的研究成果,指出未来的研究应向多元复合变质以及合金元素对材料组织性能影响的机理研究方向发展,从而找到更好的手段来进一步改善Al-Mg_2Si原位复合材料的组织与性能。It has been reported that Al-Mg2Si in-situ composites show excellent mechanical properties, and are widely used in aerospace, automotive and other applications. Both primary and eutectic Mg2 Si of Al-Mg2 Si microstructure has been modified effectively by additions of phosphorus, rare earth, strontium. And modification mechanism of different inoculants has been discussed. It has been summarized that addition of alloying element shows improvement in mechanical properties of Mg2 Si in-situ composites. The latest research results both at home and abroad are introduced. The focal points of research are presented as complex modification and mechanism study of alloying addition, in order to get better microstrueture and mechanical properties.

关 键 词：Al-Mg2Si原位复合材料 变质 合金元素 力学性能 

分 类 号：TB331[一般工业技术—材料科学与工程]