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

H. S. Kang, W. Y. Yoon, K. H. Kim, M. H. Kim, E. P. Yoon

Research output: Contribution to journalConference article

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
DOIs
Publication statusPublished - 2004
EventDesigning, Processing and Properties of Advanced Engineering Materials: Proceedings on the 3rd International Symposium on Designing, Processing and Properties of Advanced Engineering Materials - Jeju Island, Korea, Republic of
Duration: 2003 Nov 52003 Nov 8

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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