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The monotectic reaction in Cu-Nb alloys

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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.

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Authors and Affiliations

  1. Ames Laboratory-DOE and Department of Materials Science and Engineering, Iowa State University, 50011, Ames, Iowa, USA

    J. D. Verhoeven & E. D. Gibson

Authors
  1. J. D. Verhoeven
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  2. E. D. Gibson
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Verhoeven, J.D., Gibson, E.D. The monotectic reaction in Cu-Nb alloys. J Mater Sci 13, 1576–1582 (1978). https://doi.org/10.1007/BF00553214

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  • DOI: https://doi.org/10.1007/BF00553214

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