Carbon solubilities in iron at elevated temperatures analysed by statistical thermodynamics

Author: Shohoji, N.

Source: Materials Science and Technology, Volume 3, Number 6, June 1987 , pp. 404-410(7)

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Abstract:

Carbon solubilities in iron at elevated temperatures (>1000 K) are analysed on the basis of statistical thermodynamics. A parameter Q which refers to the extent of stabilization of a carbon atom in the iron lattice is estimated for α-, γ-, and molten FeC_x phases. The results suggest that the carbon atom is most stable in molten FeC_x and least stable in (α-FeC_x. In addition, the value of Q_C ^α for (α-FeC_x at high temperatures appears to be different from that at lower temperatures. This observation can be interpreted as the effect of the magnetic transition of the iron atom around the Curie temperature. The values for Q estimated for the other interstitial elements X (X = H, N, P, S) in iron lattices are compared.

MST/586

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/026708387790329649

Publication date: 1987-06-01

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Materials Science and Technology is the successor of two previous titles, for which digitised archives are available: Metal Science (Vols. 1—17; 1967—84) and Metals Technology (Vols. 1—11; 1974—84).

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