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Original title:
Comparison of Diffusion Coefficients in Initial Stages of Mutual Diffusion in Layered Structures Carbon/Ferrite and Carbon/Austenite for Chosen Alloys
Authors: Čermák, Jiří ; Král, Lubomír
Document type: Papers
Conference/Event: METAL 2013 - International Conference on Metallurgy and Materials /22./, Brno (CZ), 2013-05-15 / 2013-05-17
Year: 2013
Language: eng
Abstract: Coefficients of mutual carbon diffusion were measured at initial stages of diffusion for surface thin layer of carbon/ferrite and carbon surface layer/austenite. The aim of the study was to compare the diffusion characteristics obtained at the present strongly non-equilibrium case with those known for carbon mutual diffusion in cases where the carbon concentration does not exceed the solubility limit in the respective substrate. The second goal was to judge, whether the carbon diffusivity is determined by the structure of the substrate matrix (BCC or FCC). As examples of ferrite substrate, pure Fe and chromium steel P91 were chosen, as an example of austenite substrate, AISI316 was taken. It was obtained that – similar to nearequilibrium case – the carbon diffusion measured close to interface C/austenite is significantly lower compared to carbon diffusion near the C/ferrite. Values of carbon diffusion coefficients in cases C/Fe and C/P91 are close one to another. All carbon diffusion coefficients are much lower than those, reported for near-equilibrium conditions; they approach values measured in carbides.
Keywords: AISI316; Carbon; Initial stage of mutual diffusion; P91
Project no.: GAP108/11/0148 (CEP), ED1.1.00/02.0068
Funding provider: GA ČR, GA MŠk
Host item entry: METAL 2013 Conference Proceedings: 22nd International Conference on Metallurgy and Materials, ISBN 978-80-87294-39-0
Institution: Institute of Physics of Materials AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0225979
Permalink: http://www.nusl.cz/ntk/nusl-161476
The record appears in these collections:
Research > Institutes ASCR > Institute of Physics of Materials
Conference materials > Papers
Authors: Čermák, Jiří ; Král, Lubomír
Document type: Papers
Conference/Event: METAL 2013 - International Conference on Metallurgy and Materials /22./, Brno (CZ), 2013-05-15 / 2013-05-17
Year: 2013
Language: eng
Abstract: Coefficients of mutual carbon diffusion were measured at initial stages of diffusion for surface thin layer of carbon/ferrite and carbon surface layer/austenite. The aim of the study was to compare the diffusion characteristics obtained at the present strongly non-equilibrium case with those known for carbon mutual diffusion in cases where the carbon concentration does not exceed the solubility limit in the respective substrate. The second goal was to judge, whether the carbon diffusivity is determined by the structure of the substrate matrix (BCC or FCC). As examples of ferrite substrate, pure Fe and chromium steel P91 were chosen, as an example of austenite substrate, AISI316 was taken. It was obtained that – similar to nearequilibrium case – the carbon diffusion measured close to interface C/austenite is significantly lower compared to carbon diffusion near the C/ferrite. Values of carbon diffusion coefficients in cases C/Fe and C/P91 are close one to another. All carbon diffusion coefficients are much lower than those, reported for near-equilibrium conditions; they approach values measured in carbides.
Keywords: AISI316; Carbon; Initial stage of mutual diffusion; P91
Project no.: GAP108/11/0148 (CEP), ED1.1.00/02.0068
Funding provider: GA ČR, GA MŠk
Host item entry: METAL 2013 Conference Proceedings: 22nd International Conference on Metallurgy and Materials, ISBN 978-80-87294-39-0
Institution: Institute of Physics of Materials AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0225979
Permalink: http://www.nusl.cz/ntk/nusl-161476
The record appears in these collections:
Research > Institutes ASCR > Institute of Physics of Materials
Conference materials > Papers
Record created 2013-11-21, last modified 2021-11-24