Macrosegregation during direct chill casting of aluminum alloy 7050

Kyle Fezi, John Coleman, Matthew J.M. Krane

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations

Abstract

A fully transient numerical model of the direct chill casting process is used to examine the influence of casting parameters on the macrosegregation of alloy 7050. The casting speed and secondary cooling boundary condition were varied. The secondary cooling was altered by placing a wiper to divert the free-falling water away from the solidified metal surface. Both the casting rate and wiper placement affect the sump depth and shape, and therefore influence the level of macrosegregation, especially at the centerline. The sump depth and level of macrosegregation increased with the casting rate, while placing the wiper nearer the mold could decrease negative centerline segregation.

Original languageEnglish
Title of host publicationLight Metals 2015 - At the TMS 2015 Annual Meeting and Exhibition
EditorsMargaret Hyland, Margaret Hyland
PublisherMinerals, Metals and Materials Society
Pages871-875
Number of pages5
ISBN (Electronic)9781119082446
StatePublished - 2015
Externally publishedYes
EventLight Metals 2015 - TMS 2015 Annual Meeting and Exhibition - Orlando, United States
Duration: Mar 15 2015Mar 19 2015

Publication series

NameTMS Light Metals
Volume2015-January
ISSN (Print)0147-0809

Conference

ConferenceLight Metals 2015 - TMS 2015 Annual Meeting and Exhibition
Country/TerritoryUnited States
CityOrlando
Period03/15/1503/19/15

Keywords

  • Alloy 7050
  • Direct chill casting
  • Macrosegregation

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