Correlation between vanadium carbide size and hydrogen trapping in ferritic steel

Turk, Andrej and San Martín, David and 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. pp. 112-116. ISSN 1359-6462

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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.

Item Type:
Journal Article
Journal or Publication Title:
Scripta Materialia
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3104
Subjects:
ID Code:
125351
Deposited By:
Deposited On:
23 May 2018 15:36
Refereed?:
Yes
Published?:
Published
Last Modified:
23 Sep 2020 04:19