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

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

Abstract:

The effects of Mn and Ce on the Fe-rich intermetallics in secondary Al-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 1wt%, the primary α-Fe was formed in the alloys. At the same time, the addition of 0.1wt% Ce could cause a great increase of primary α-Fe particles