RE对Al-22Si-3Fe-0.045P-1.8Mn组织和性能的影响  

Effect of RE on Al-22Si-3Fe-0.045P-1.8Mn Microstructure and Properties

作　　者：李林鑫[1] 银强[1] 陈显均 任小鸿 

机构地区：[1]四川化工职业技术学院机械工程系,四川泸州646005

出　　处：《铸造》2016年第7期608-610,615,共4页Foundry

摘　　要：为了实现含铁量较高的过共晶铝硅合金回收利用,提升合金性能,通过加入不同含量的Mn和RE,采用RE+Mn联合变质的方法,研究铝硅合金中铁相变质机理,从而得到性能较好的合金成分。结果表明,在加入1.8wt.%Mn和0.35wt.%RE时,合金获得最好性能,抗拉强度达到152.1 MPa。对过共晶铝硅合金铸件的生产具有参考意义。To achieve recycle of the high iron content of hypereutectic Al-Si alloy and improve alloy performance, metamorphic mechanism of the iron phase was researched by adding different content of Mn and RE and adopting the method of RE＋Mn joint deterioration. And optimal alloy composition was obtained. The results show that adding 1.8wt.% Mn and 0.35wt.% RE, the alloy can obtain the best performance, the tensile strength can reach 152.1 MPa, which provides reference for the hypereutectic aluminum silicon alloy casting production.

关 键 词：铝硅合金 过共晶 RE 铁相 MN 

分 类 号：TG146.21[一般工业技术—材料科学与工程]