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Journal of Materials Science

, Volume 13, Issue 7, pp 1576–1582 | Cite as

The monotectic reaction in Cu-Nb alloys

  • J. D. Verhoeven
  • E. D. Gibson
Papers

Abstract

The solidification of Cu-Nb alloys has been studied by a chill casting technique. Formation of small spherical particles, termed spheroids, was observed at compositions of 15 and 20 wt % Nb, and comparison to similar particles found in chill cast Cu-Pb alloys presents evidence that the spheroids are produced by a monotectic reaction. It is shown that the spheroids are induced by oxygen impurities in the alloys and that their formation is also promoted by high solidification rates. A mechanism for spheroid formation is postulated.

Keywords

Oxygen Polymer Spherical Particle Solidification Rate Casting Technique 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman and Hall Ltd. 1978

Authors and Affiliations

  • J. D. Verhoeven
    • 1
  • E. D. Gibson
    • 1
  1. 1.Ames Laboratory-DOE and Department of Materials Science and EngineeringIowa State UniversityAmesUSA

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