Experimental studies of the evolution of cast microstructures and defects

S. Sridhar, C. W.J. Cheong, P. D. Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution


While great advances have been made in predicting the micro-structural evolution during casting through computational simulation, the ability to experimentally verifying the simulations has lagged behind in the case of metallurgical casting. This is largely due to the following experimental difficulties: i) studying high-temperature phenomena in situ, and ii) characterizing the complex three-dimensional structures and their interactions. This is particularly true at the scale of the dendrites, i.e. with a resolution in the order of microns. This paper highlights some of the recent advances in techniques for the evaluation microstructures during both their evolution and their final three-dimensional morphology. This includes the in situ observation methods of confocal scanning laser microscopy, in situ microfocal X-ray radiography of studies, and microfocal tomography. Examples are giving on both the solidification structure and defects, including: hydrogen porosity evolution, grain refinement and Sr-modification, and particle pushing/engulfment/entrapment.

Original languageEnglish (US)
Title of host publicationAdvances in Aluminum Casting Technology II
EditorsM. Tiryakioglu, J. Campbell, M. Tiryakioglu, J. Campbell
Number of pages7
StatePublished - 2002
Externally publishedYes
EventConference Proceedings from Materials Solutions 2002 - Columbus, OH, United States
Duration: Oct 7 2002Oct 9 2002

Publication series

NameAdvances in Aluminum Casting Technology II


ConferenceConference Proceedings from Materials Solutions 2002
Country/TerritoryUnited States
CityColumbus, OH

ASJC Scopus subject areas

  • Engineering(all)


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