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

Meyer, Andreas and Hennig, L and Kargl, Florian and Unruh, T (2019) Iron self Diffusion in liquid pure iron and iron-carbon alloys. Journal of Physics - Condensed Matter, 395401 (31). Institute of Physics (IOP) Publishing. ISSN 0953-8984.

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Abstract

With incoherent quasielastic neutron scattering self-diffusion coefficients Ds in pure iron, and iron-carbon alloys containing 8.7 at% and 16.9 at% carbon have been measured. At the melting point Ds in liquid iron is 2.8(1) × 10−9 m2 s−1. For the close-to-eutectic Fe83.1C16.9 composition Ds = 1.33(12) × 10−9 m2 s−1 at Tliq = 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.

Item URL in elib:https://elib.dlr.de/128430/
Document Type:Article
Title:Iron self Diffusion in liquid pure iron and iron-carbon alloys
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Meyer, AndreasAndreas.Meyer (at) dlr.deUNSPECIFIED
Hennig, LUNSPECIFIEDUNSPECIFIED
Kargl, FlorianFlorian.Kargl (at) dlr.deUNSPECIFIED
Unruh, TUNSPECIFIEDUNSPECIFIED
Date:July 2019
Journal or Publication Title:Journal of Physics - Condensed Matter
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:395401
Publisher:Institute of Physics (IOP) Publishing
ISSN:0953-8984
Status:Published
Keywords:Neutron scattering self-diffusion
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Research under Space Conditions
DLR - Research theme (Project):R - Materials Research and Microgravity (MuM)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space > Scientific Experiments MP
Deposited By: Prochnow, Kim
Deposited On:17 Jul 2019 09:59
Last Modified:15 Jan 2020 15:24

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