Microstructure characterizations of hypereutectic Al-Si alloys with different undercooling levels

H. S. Kang, Wooyoung Yoon, Kwon Hee Kim, M. H. Kim, E. P. Yoon

Research output: Contribution to journalArticle

Abstract

Microstructural variation is quantitatively characterized by measured undercooling. For near-eutectic 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.

Original languageEnglish
Pages (from-to)169-172
Number of pages4
JournalMaterials Science Forum
Volume449-452
Issue numberI
Publication statusPublished - 2004 Jul 27

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Keywords

  • Hypereutectic Al-Si
  • Morphological changes of primary and eutectic Si
  • Undercooling

ASJC Scopus subject areas

  • Materials Science(all)

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