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The densities of high-purity iron-carbon alloys in the spheroidized condition

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Abstract

The densities were determined for a series of spheroidized then slowly cooled, high-purity iron-carbon alloy specimens containing from 0 to 4.17 pct C. They were found to follow the relationshipρ -1 (cc/g at 23°C) = 0.126988 + (5.036 × 10-4) (wt pct C). Whereas the intercept value coincided with the x-ray specific volume of iron, the extrapolated value at the Fe3C composition was slightly greater than published X-ray specific volumes for Fe3C. The results suggested that the cementite phase in these specimens was slightly iron-rich with respect to Fe3C. Assuming a vacancy-defect structure for the cementite, we were able to roughly estimate its composition. This appears to be a promising method for determining the cementite/(cementite + ferrite) saturation boundary.

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Authors and Affiliations

  1. Ames Laboratory USAEC, Iowa State University, 50010, Ames, Iowa

    F. X. Kayser (Metallurgist, Assoc. Prof. of Metallurgy)

  2. Detroit Diesel Allison Division of General Motors Corp., 48228, Detroit, Michigan

    A. Litwinchuk (Graduate Asst. at the Ames Laboratory, Supervisor of Special Analytical Services)

  3. Ames Laboratory, USA

    G. L. Stowe (Senior Research Technician)

Authors
  1. F. X. Kayser
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  2. A. Litwinchuk
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  3. G. L. Stowe
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Kayser, F.X., Litwinchuk, A. & Stowe, G.L. The densities of high-purity iron-carbon alloys in the spheroidized condition. Metall Trans A 6, 55–58 (1975). https://doi.org/10.1007/BF02673670

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  • DOI: https://doi.org/10.1007/BF02673670

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