CAJ | 학술논문

采用金相显微分析法,研究添加Si、Mn及富Ce稀土对工业纯铝中初晶α-Al晶粒度和富Fe相(Al3Fe)形貌的影响.结果表明,Si、Mn和RE对工业纯铝显微组织的影响和作用机制不同.添加Si起到细化初晶晶粒和增加富Fe相含量的作用;添加Mn几乎没有细化初晶,但是降低合金中富Fe相的含量;添加RE不但细化晶粒,还显著降低富Fe相的含量.就各元素的作用机制进行了探讨.
채용금상현미분석법,연구첨가Si、Mn급부Ce희토대공업순려중초정α-Al정립도화부Fe상(Al3Fe)형모적영향.결과표명,Si、Mn화RE대공업순려현미조직적영향화작용궤제불동.첨가Si기도세화초정정립화증가부Fe상함량적작용;첨가Mn궤호몰유세화초정,단시강저합금중부Fe상적함량;첨가RE불단세화정립,환현저강저부Fe상적함량.취각원소적작용궤제진행료탐토.
The effects of silicon, manganese and Ce-riched mixed rare earth on the granularity of primary α-Al and the morphology of Fe-riched phase in industrial pure aluminum were studied by using the metallographic micro-analytical method. Experimental results show that, adding Si, Mn and RE has different effects and different action mechanism on the microstructure of alloys. The addition of Si can refine the primary α-Al grain and increase the content of Al3Fe phase; the addition of Mn has less effect on refining the grain but reduces the content of Al3Fe phase; the addition of RE either refines the α-Al grain or greatly reduces the content of Al3Fe phase. Moreover, the action mechanism of the elements was discussed.