Metallurgical Transactions

, Volume 2, Issue 9, pp 2477–2483 | Cite as

Macrosegregation in a copper alloy directionally cast with exudation of liquid

  • F. Kaempffer
  • F. Weinberg
Transformations
Received:

Abstract

Cu-8 pct Ag alloys containing radioactive silver were cast into a heated mold with a water-cooled copper base producing a columnar cast structure. A short time after casting, the chill was removed causing local reheating and exudations to occur at the chill face. The exudations were found to be solute-rich, and the casting adjacent to the chill solute-poor. A series of castings were made with different time intervals between pouring and removal of the chill. Quantitative measurements were made of the macrosegregation of each of the castings both in the exudations and in the casting proper. The results are accounted for on the basis of a simple model which assumes back flow of the interdendritic liquid during solidification.

Keywords

Inverse Segregation Chill Face 
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Copyright information

© The Metallurgical Society of American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc., and American Society for Metals 1971

Authors and Affiliations

  • F. Kaempffer
    • 1
  • F. Weinberg
    • 1
  1. 1.Department of MetallurgyUniversity of British ColumbiaVancouverCanada

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