高硅铝合金变质处理的研究现状及发展趋势  

Research Status and Development Trend of High Silicon Aluminum Alloy Modification Treatment

作　　者：何磊东 仲召军 李鹏鹏 HE Leidong;ZHONG Zhaojun;LI Pengpeng(Jiangsu Huilian Aluminum Co.,Ltd.,Lianyungang 222000,China)

机构地区：[1]江苏汇联铝业有限公司,江苏连云港222000

出　　处：《铸造技术》2021年第1期65-68,共4页Foundry Technology

摘　　要：近年来,国内外工业"高速、节能、轻量、安全"的发展趋势对铝合金零构件的性能要求进一步提高。过共晶铝硅合金具有更低的膨胀系数、更小的密度和更高的耐磨性,产品性能更加优异。其铸态组织主要由粗大的初晶硅和针状或层片状共晶体(α+Si)组成。使用Cu-P中间合金和镧铈稀土(La-Ce)变质处理,可以获得(17%Si)高铝硅合金及其产品。这些对于促进企业的高速发展和压铸技术进步具有一定的理论和现实意义。In recent years,the development trend of"high speed,energy saving,light weight and safety"in domestic and even world industry has further improved the performance requirements of aluminum alloy zero components.The hypereutectic aluminum silicon alloy has lower expansion coefficient,smaller density,higher wear resistance and better product performance.As-cast structure m Alnly consists of coarse primary silicon and acicular or lamellar eutectic(α+Si)structure.Using Cu-P intermediate alloy and rare earth(La-Ce)modification treatment to obt Aln(17%Si)high aluminum silicon alloy products,there is a broad market;it is of great theoretical and practical significance to promote the rapid development of enterprises and the progress of die casting technology.

关 键 词：高硅铝合金 变质剂 复合变质 

分 类 号：TG146.2[金属学及工艺—金属材料]