The role of the eutectic in porosity formation in Al-Si foundry alloys

S. D. McDonald, L. Lu, K. Nogita, A. K. Dahle

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

It is now well-established that there are three different possible eutectic solidification patterns in Al-Si foundry alloys. Furthermore, the operation of each solidification mechanism can be manipulated through additions of typical modifier elements, such as Sr and Na, but also less common elements. The spatial distribution of evolving eutectic is very different for each eutectic solidification pattern, resulting in large differences in feedability in the last stages of solidification because of changes in permeability and isolation of liquid pockets. This paper presents a coherent approach to solidification mechanisms in Al-Si alloys and the relationship to the porosity formation in this important alloy system.

Original languageEnglish
Pages125-133
Number of pages9
Publication statusPublished - Dec 1 2005
EventShape Casting - The John Campbell Symposium - TMS 2005 Annual Meeting - San Francisco, CA, United States
Duration: Feb 13 2005Feb 17 2005

Other

OtherShape Casting - The John Campbell Symposium - TMS 2005 Annual Meeting
CountryUnited States
CitySan Francisco, CA
Period2/13/052/17/05

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

Cite this

McDonald, S. D., Lu, L., Nogita, K., & Dahle, A. K. (2005). The role of the eutectic in porosity formation in Al-Si foundry alloys. 125-133. Paper presented at Shape Casting - The John Campbell Symposium - TMS 2005 Annual Meeting, San Francisco, CA, United States.