Solidification behavior of SiCw/Al-18Si composites
来源期刊：Rare Metals2007年第S1期
论文作者：WEI Hongmei,GENG Lin,and ZHANG Xuexi School of Materials Science and Engineering,Harbin Institute of Technology,Harbin ,China
文章页码：237 - 241
摘 要：SiCw/Al-18Si composites were prepared by squeeze casting technique.Solidification behavior of SiCw/Al-18Si composites was studied by differential scanning calorimeter（DSC） and scanning electron microscopy（SEM）.The re-melting temperature has little effect on the solidification behavior and microstructure of composites.With the increase of SiC whisker content,onset and peak temperatures of primary Si decrease and the average size of primary silicon becomes smaller and smaller.Sr addition lowers onset and peak temperatures of primary Si,however,onset and peak temperatures of eutectic were barely affected by Sr addition.The average sizes of primary Si and Al-Si eutectic both decrease by Sr addition.
WEI Hongmei,GENG Lin,and ZHANG Xuexi School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China
摘 要：SiCw/Al-18Si composites were prepared by squeeze casting technique.Solidification behavior of SiCw/Al-18Si composites was studied by differential scanning calorimeter（DSC） and scanning electron microscopy（SEM）.The re-melting temperature has little effect on the solidification behavior and microstructure of composites.With the increase of SiC whisker content,onset and peak temperatures of primary Si decrease and the average size of primary silicon becomes smaller and smaller.Sr addition lowers onset and peak temperatures of primary Si,however,onset and peak temperatures of eutectic were barely affected by Sr addition.The average sizes of primary Si and Al-Si eutectic both decrease by Sr addition.
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