Formation of the tin rich layer and inverse-segregation in phosphor bronzes during continuous casting

S. Saleem, M. Vynnycky, H. Fredriksson

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

Abstract

Continuous casting of the phosphor bronzes has been investigated experimentally and analyzed with the help of a thermo-mechanical model. The microscopic investigation shows the spread of the tin rich liquid at the chill surface cause by the formation of flow channels underneath the chill surface. Precipitation of the secondary phases has also been observed under some casting conditions. The macro segregation profile along the solidification thickness predicts a strong casting parameter sensitive inverse segregation. The simulation results show high compressive stresses at the surface of the cast during solidification. The flow channels depth and thermal stress coupled with microsegregation calculations shows the possibility of the pressure driven flow of tin rich liquid towards the chill surface during solidification. The experimental observation and calculated results show that the inverse segregation can be homogenized and decreased by controlling the casting parameter that defines the liquid pool depth into the mould.

Original languageEnglish
Title of host publicationAdvances in the Science and Engineering of Casting Solidification
Subtitle of host publicationAn MPMD Symposium Honoring Doru Michael Stefanescu - Held During TMS 2015 144th Annual Meeting and Exhibition
EditorsLaurentiu Nastac, Baicheng Liu, Hasse Fredriksson, Jacques Lacaze, Chun-Pyo Hong, Adrian V. Catalina, Andreas Buhrig-Polaczek, Charles Monroe, Adrian S. Sabau, Roxana Elena Ligia Ruxanda, Alan Luo, Subhayu Sen, Attila Dioszegi, Attila Dioszegi
PublisherMinerals, Metals and Materials Society
Pages15-22
Number of pages8
ISBN (Electronic)9781119082385
DOIs
Publication statusPublished - 2015
Externally publishedYes
EventAdvances in the Science and Engineering of Casting Solidification: An MPMD Symposium Honoring Doru Michael Stefanescu - TMS 2015 144th Annual Meeting and Exhibition - Orlando, United States
Duration: 15 Mar 201519 Mar 2015

Publication series

NameTMS Annual Meeting
Volume2015-March

Conference

ConferenceAdvances in the Science and Engineering of Casting Solidification: An MPMD Symposium Honoring Doru Michael Stefanescu - TMS 2015 144th Annual Meeting and Exhibition
Country/TerritoryUnited States
CityOrlando
Period15/03/1519/03/15

Keywords

  • Continuous casting
  • Exudation
  • Inverse segregation
  • Thermal stress

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