Correlation between vanadium carbide size and hydrogen trapping in ferritic steel
Correlation between vanadium carbide size and hydrogen trapping in ferritic steel
Hydrogen trapping on vanadium carbides (VC) was studied in a low-carbon ferritic steel. Thermal desorption analysis was performed on two conditions with different carbide sizes but identical volume fractions. Smaller carbides with a higher effective surface area trapped significantly more hydrogen. A correlation between carbide size and hydrogen trap density was established, suggesting that trapping is surface-dominant and a scaling law for trap density was derived. The amount of trapped hydrogen was overall much lower than previously reported for VC-containing martensitic steels. It is therefore suggested that in the absence of a dislocated matrix VC traps relatively little hydrogen.
3. Carbides, 3. Ferritic steels, 4. Hydrogen diffusion, 4. Microstructure, Thermal desorption analysis
112-116
Turk, Andrej
66ab5921-4c1e-45dc-be21-abfb78f6977b
San Martín, David
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Rivera-Díaz-del-Castillo, Pedro E.J.
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Galindo-Nava, Enrique I.
55a2bf00-0903-414e-8ab6-e26d143a9af3
25 April 2018
Turk, Andrej
66ab5921-4c1e-45dc-be21-abfb78f6977b
San Martín, David
3cb4e081-1f6f-4f63-a25f-30613c3288a1
Rivera-Díaz-del-Castillo, Pedro E.J.
6e0abc1c-2aee-4a18-badc-bac28e7831e2
Galindo-Nava, Enrique I.
55a2bf00-0903-414e-8ab6-e26d143a9af3
Turk, Andrej, San Martín, David, Rivera-Díaz-del-Castillo, Pedro E.J. and Galindo-Nava, Enrique I.
(2018)
Correlation between vanadium carbide size and hydrogen trapping in ferritic steel.
Scripta Materialia, 152, .
(doi:10.1016/j.scriptamat.2018.04.013).
Abstract
Hydrogen trapping on vanadium carbides (VC) was studied in a low-carbon ferritic steel. Thermal desorption analysis was performed on two conditions with different carbide sizes but identical volume fractions. Smaller carbides with a higher effective surface area trapped significantly more hydrogen. A correlation between carbide size and hydrogen trap density was established, suggesting that trapping is surface-dominant and a scaling law for trap density was derived. The amount of trapped hydrogen was overall much lower than previously reported for VC-containing martensitic steels. It is therefore suggested that in the absence of a dislocated matrix VC traps relatively little hydrogen.
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Accepted/In Press date: 3 April 2018
e-pub ahead of print date: 25 April 2018
Published date: 25 April 2018
Keywords:
3. Carbides, 3. Ferritic steels, 4. Hydrogen diffusion, 4. Microstructure, Thermal desorption analysis
Identifiers
Local EPrints ID: 491981
URI: http://eprints.soton.ac.uk/id/eprint/491981
ISSN: 1359-6462
PURE UUID: b0243106-eea6-4f0b-ace1-49f0248ad12a
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Date deposited: 10 Jul 2024 16:32
Last modified: 12 Jul 2024 02:13
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Author:
Andrej Turk
Author:
David San Martín
Author:
Pedro E.J. Rivera-Díaz-del-Castillo
Author:
Enrique I. Galindo-Nava
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