Microstructure Characterizations of Hypereutectic Al-Si Alloys with Different Undercooling Levels |
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| Journal | Materials Science Forum (Volumes 449 - 452) |
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| Volume | Designing, Processing and Properties of Advanced Engineering Materials |
| Edited by | S.-G. Kang and T. Kobayashi |
| Pages | 169-172 |
| DOI | 10.4028/www.scientific.net/MSF.449-452.169 |
| Citation | H.S. Kang et al., 2004, Materials Science Forum, 449-452, 169 |
| Online since | March, 2004 |
| Authors | H.S. Kang, W.Y. Yoon, Kwon H. Kim, M.H. Kim, Eui Pak Yoon |
| Keywords | Hypereutectic Al-Si, Morphological Changes Of Primary And Eutectic Si, Undercooling |
| Abstract | Microstructural variation is quantitatively characterized by measured undercooling. For neareutectic Al-13wt%Si alloys, microstructure transitions, which include a phase change from eutectic to primary α-Al dendrite plus eutectic and a morphological change from α-Al dendrite to equiaxed Al grains, were observed with increasing undercooling levels. For hypereutectic Al-Si alloys, microstructure transitions, which include a morphological change of primary and eutectic Si crystals, were also obtained quantitatively by increasing undercooling. |
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