A qualitative investigation of interdendritic liquid flow was carried out on pre-cast Pb-20Sn ingots at temperatures where the casting was partially liquid. The liquid flow was found to be preferential in nature, and strongly dependent on surface tension effects.
Castings of Cu-8Ag and Al-30Ag were made in which the chill was removed during solidification to cause exudation of solute rich liquid. Nacrosegregation was detected using radioactive tracer elements. The castings were characterized by a solute enriched exuded zone and a solute depleted region adjacent to the chill. Models based on the simple back-flow of residual liquid to feed exudation were developed to explain the composition profiles adjacent to the chill. / Applied Science, Faculty of / Materials Engineering, Department of / Graduate
| Identifer | oai:union.ndltd.org:UBC/oai:circle.library.ubc.ca:2429/34875 |
| Date | January 1970 |
| Creators | Kaempffer, Fred L. |
| Publisher | University of British Columbia |
| Source Sets | University of British Columbia |
| Language | English |
| Detected Language | English |
| Type | Text, Thesis/Dissertation |
| Rights | For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
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