Iron self diffusion in liquid pure iron and iron-carbon alloys

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Details zur Publikation

Autorinnen und Autoren: Meyer A, Hennig L, Kargl F, Unruh T
Zeitschrift: Journal of Physics: Condensed Matter
Jahr der Veröffentlichung: 2019
Band: 31
Heftnummer: 39
ISSN: 0953-8984
eISSN: 1361-648X


With incoherent quasielastic neutron scattering self-diffusion coefficients D-s in pure iron, and iron-carbon alloys containing 8.7 at% and 16.9 at% carbon have been measured. At the melting point D-s in liquid iron is 2.8(1) x 10(-9) m(2) s(-1). For the close-to-eutectic Fe83.1C16.9 composition D-s = 1.33(12) x 10(-9) m(2) s(-1) at T-liq = 1432 K. Contradicting conclusions drawn from literature values of tracer diffusion experiments the addition of carbon has only a minor effect on the iron mobility: at a given temperature the self-diffusion coefficient in Fe83.1C16.9 is only 10% larger than in liquid iron, although mixing has a drastic effect on liquidus temperature and phase behavior.

FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Unruh, Tobias Prof. Dr.
Professur für Nanomaterialcharakterisierung (Streumethoden)

Einrichtungen weiterer Autorinnen und Autoren

Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)


Meyer, A., Hennig, L., Kargl, F., & Unruh, T. (2019). Iron self diffusion in liquid pure iron and iron-carbon alloys. Journal of Physics: Condensed Matter, 31(39).

Meyer, A., et al. "Iron self diffusion in liquid pure iron and iron-carbon alloys." Journal of Physics: Condensed Matter 31.39 (2019).


Zuletzt aktualisiert 2019-26-07 um 14:38