Mn和Ce对再生Al-Si合金富铁相的影响  

Effect of Mn and Ce on the Fe-Rich Intermetallics in Secondary Al-Si Alloys

作　　者：范超[1,2] 龙思远[1] 杨怀德[1] 王向杰[1] 张均成[1] 

机构地区：[1]重庆大学,重庆400030 [2]广西科技大学,广西柳州545006

出　　处：《稀有金属材料与工程》2014年第3期660-664,共5页Rare Metal Materials and Engineering

基　　金：'973'计划(2007CB613702);中央高校基本科研业务基金(CDJXS11132226)

摘　　要：研究了Mn、Ce对再生Al-Si合金富铁相的影响。分别采用光学显微镜(OM)、扫描电镜(SEM)和能谱仪(EDX)对试样组织进行形貌观察分析和生成相进行成分分析,利用差分扫描量热仪(DSC)研究相转变温度。结果表明,当Mn的含量为1%(质量分数)时,合金组织出现了初生α-Fe相,同时添加0.1%Ce(质量分数)时,能够有效促进初生α-Fe相形核与长大。The effects of Mn and Ce on the Fe-rich intermetallics in secondary A1-Si alloys were studied. Microstructure morphology and phase-transition temperature of samples were examined and analyzed by optical microscope （OM）, scanning electric microscope （SEM）, energy dispersive X-ray （EDX） and differential scanning calorimetric （DSC）. The results show that when Mn content was lwt%, the primary a-Fe was formed in the alloys. At the same time, the addition of 0. lwt% Ce could cause a great increase of primary a-Fe particles

关 键 词：CE 富铁相 再生Al-Si合金中图法 

分 类 号：TG146.21[一般工业技术—材料科学与工程]