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

Meyer A, Hennig L, Kargl F, Unruh T (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Journal of Physics: Condensed Matter Institute of Physics: Hybrid Open Access

Book Volume: 31

Pages Range: 395401

Journal Issue: 39

DOI: 10.1088/1361-648X/ab2855

Abstract

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.

Authors with CRIS profile

Tobias Unruh Professur für Nanomaterialcharakterisierung (Streumethoden)

Involved external institutions

Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) / German Aerospace Center DE Germany (DE)

How to cite

APA:

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), 395401. https://doi.org/10.1088/1361-648X/ab2855

MLA:

Meyer, A., et al. "Iron self diffusion in liquid pure iron and iron-carbon alloys." Journal of Physics: Condensed Matter 31.39 (2019): 395401.

BibTeX: Download