Effect of nickel on hydrogen permeation in ferritic/pearlitic low alloy steels
Nickel offers several beneficial effects as an alloying element to low alloy steels. However, it is, in the oil and gas industry, limited by part 2 of the ISO 15156 standard to a maximum of 1 wt% due to sulfide stress cracking resistance concerns. Hydrogen uptake, diffusion, and trapping were inves...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Published: |
Elsevier Ltd
2018
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| Online Access: | http://hdl.handle.net/20.500.11937/65548 |
| _version_ | 1848761154370797568 |
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| author | Iannuzzi, Mariano Husby, H. Johnsen, R. Kappes, M. Barnoush, A. |
| author_facet | Iannuzzi, Mariano Husby, H. Johnsen, R. Kappes, M. Barnoush, A. |
| author_sort | Iannuzzi, Mariano |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Nickel offers several beneficial effects as an alloying element to low alloy steels. However, it is, in the oil and gas industry, limited by part 2 of the ISO 15156 standard to a maximum of 1 wt% due to sulfide stress cracking resistance concerns. Hydrogen uptake, diffusion, and trapping were investigated in research-grade ferritic/pearlitic low alloy steels with Ni contents of 0, 1, 2 and 3 wt% by the electrochemical permeation method as a function of temperature and hydrogen charging conditions. Qualitatively, the effective diffusion coefficient, Deff, decreased with increasing Ni content. The sub-surface lattice hydrogen concentration, C0, decreased with increasing Ni content in all charging conditions while the trend between the sub-surface hydrogen concentration in lattice and reversible trap sites, COR, and Ni content varied with the charging conditions. Irreversible trapping, evaluated by consecutive charging transients, was not observed for any of the materials. Lastly, the possible influence of an increasing fraction of pearlite with increasing Ni content is discussed. |
| first_indexed | 2025-11-14T10:27:10Z |
| format | Journal Article |
| id | curtin-20.500.11937-65548 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:27:10Z |
| publishDate | 2018 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-655482020-06-15T03:10:04Z Effect of nickel on hydrogen permeation in ferritic/pearlitic low alloy steels Iannuzzi, Mariano Husby, H. Johnsen, R. Kappes, M. Barnoush, A. Nickel offers several beneficial effects as an alloying element to low alloy steels. However, it is, in the oil and gas industry, limited by part 2 of the ISO 15156 standard to a maximum of 1 wt% due to sulfide stress cracking resistance concerns. Hydrogen uptake, diffusion, and trapping were investigated in research-grade ferritic/pearlitic low alloy steels with Ni contents of 0, 1, 2 and 3 wt% by the electrochemical permeation method as a function of temperature and hydrogen charging conditions. Qualitatively, the effective diffusion coefficient, Deff, decreased with increasing Ni content. The sub-surface lattice hydrogen concentration, C0, decreased with increasing Ni content in all charging conditions while the trend between the sub-surface hydrogen concentration in lattice and reversible trap sites, COR, and Ni content varied with the charging conditions. Irreversible trapping, evaluated by consecutive charging transients, was not observed for any of the materials. Lastly, the possible influence of an increasing fraction of pearlite with increasing Ni content is discussed. 2018 Journal Article http://hdl.handle.net/20.500.11937/65548 10.1016/j.ijhydene.2017.12.174 Elsevier Ltd restricted |
| spellingShingle | Iannuzzi, Mariano Husby, H. Johnsen, R. Kappes, M. Barnoush, A. Effect of nickel on hydrogen permeation in ferritic/pearlitic low alloy steels |
| title | Effect of nickel on hydrogen permeation in ferritic/pearlitic low alloy steels |
| title_full | Effect of nickel on hydrogen permeation in ferritic/pearlitic low alloy steels |
| title_fullStr | Effect of nickel on hydrogen permeation in ferritic/pearlitic low alloy steels |
| title_full_unstemmed | Effect of nickel on hydrogen permeation in ferritic/pearlitic low alloy steels |
| title_short | Effect of nickel on hydrogen permeation in ferritic/pearlitic low alloy steels |
| title_sort | effect of nickel on hydrogen permeation in ferritic/pearlitic low alloy steels |
| url | http://hdl.handle.net/20.500.11937/65548 |