Formation of the tin rich layer and inverse-segregation in phosphor bronzes during continuous casting
2015 (English)In: Advances in the Science and Engineering of Casting Solidification: An MPMD Symposium Honoring Doru Michael Stefanescu, The Minerals, Metals, and Materials Society, 2015, 15-22 p.Conference paper (Refereed)
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.
Place, publisher, year, edition, pages
The Minerals, Metals, and Materials Society, 2015. 15-22 p.
Continuous casting, Exudation, Inverse segregation, Thermal stress
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-170499DOI: 10.1002/9781119093367.ch3ScopusID: 2-s2.0-84931297752ISBN: 9781119082385OAI: oai:DiVA.org:kth-170499DiVA: diva2:839339
Advances in the Science and Engineering of Casting Solidification: An MPMD Symposium Honoring Doru Michael Stefanescu - TMS 2015 144th Annual Meeting and Exhibition, 15 March 2015 through 19 March 2015, Walt Disney World Orlando, United States
QC 201507022015-07-022015-07-012016-05-30Bibliographically approved