Role of grain boundaries in hydrogen embrittlement of alloy 725: single and bi-crystal microcantilever bending study
<p>In situ electrochemical microcantilever bending tests were conducted in this study to investigate the role of grain boundaries (GBs) in hydrogen embrittlement (HE) of Alloy 725. Specimens were prepared under three different heat treatment conditions and denoted as solution-annealed (SA), ag...
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| مؤلفون آخرون: | , , , , , |
| منشور في: |
2022
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| _version_ | 1864513506552840192 |
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| author | Iman Taji (19457578) |
| author2 | Tarlan Hajilou (19457587) Shabnam Karimi (19457575) Florian Schott (19517434) Ernst Plesiutschnig (19517437) Afrooz Barnoush (7410176) Roy Johnsen (19457590) |
| author2_role | author author author author author author |
| author_facet | Iman Taji (19457578) Tarlan Hajilou (19457587) Shabnam Karimi (19457575) Florian Schott (19517434) Ernst Plesiutschnig (19517437) Afrooz Barnoush (7410176) Roy Johnsen (19457590) |
| author_role | author |
| dc.creator.none.fl_str_mv | Iman Taji (19457578) Tarlan Hajilou (19457587) Shabnam Karimi (19457575) Florian Schott (19517434) Ernst Plesiutschnig (19517437) Afrooz Barnoush (7410176) Roy Johnsen (19457590) |
| dc.date.none.fl_str_mv | 2022-03-14T09:00:00Z |
| dc.identifier.none.fl_str_mv | 10.1016/j.ijhydene.2022.01.251 |
| dc.relation.none.fl_str_mv | https://figshare.com/articles/journal_contribution/Role_of_grain_boundaries_in_hydrogen_embrittlement_of_alloy_725_single_and_bi-crystal_microcantilever_bending_study/26889097 |
| dc.rights.none.fl_str_mv | CC BY 4.0 info:eu-repo/semantics/openAccess |
| dc.subject.none.fl_str_mv | Chemical sciences Physical chemistry Microcantilever bending Alloy 725Heat treatment Hydrogen embrittlement Grain boundary |
| dc.title.none.fl_str_mv | Role of grain boundaries in hydrogen embrittlement of alloy 725: single and bi-crystal microcantilever bending study |
| dc.type.none.fl_str_mv | Text Journal contribution info:eu-repo/semantics/publishedVersion text contribution to journal |
| description | <p>In situ electrochemical microcantilever bending tests were conducted in this study to investigate the role of grain boundaries (GBs) in hydrogen embrittlement (HE) of Alloy 725. Specimens were prepared under three different heat treatment conditions and denoted as solution-annealed (SA), aged (AG) and over-aged (OA) samples. For single-crystal beams in an H-containing environment, all three heat-treated samples exhibited crack formation and propagation; however, crack propagation was more severe in the OA sample. The anodic extraction of H presented similar results as those under the H-free condition, indicating the reversibility of the H effect under the tested conditions. Bi-crystal micro-cantilevers bent under H-free and H-charged conditions revealed the significant role of the GB in the HE of the beams. The results indicated that the GB in the SA sample facilitated dislocation dissipation, whereas for the OA sample, it caused the retardation of crack propagation. For the AG sample, testing in an H-containing environment led to the formation of a sharp, severe crack along the GB path.</p><h2>Other Information</h2> <p> Published in: International Journal of Hydrogen Energy<br> License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.ijhydene.2022.01.251" target="_blank">https://dx.doi.org/10.1016/j.ijhydene.2022.01.251</a></p> |
| eu_rights_str_mv | openAccess |
| id | Manara2_a93c92ef3b25195c82e40ca0492f7e6e |
| identifier_str_mv | 10.1016/j.ijhydene.2022.01.251 |
| network_acronym_str | Manara2 |
| network_name_str | Manara2 |
| oai_identifier_str | oai:figshare.com:article/26889097 |
| publishDate | 2022 |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | CC BY 4.0 |
| spelling | Role of grain boundaries in hydrogen embrittlement of alloy 725: single and bi-crystal microcantilever bending studyIman Taji (19457578)Tarlan Hajilou (19457587)Shabnam Karimi (19457575)Florian Schott (19517434)Ernst Plesiutschnig (19517437)Afrooz Barnoush (7410176)Roy Johnsen (19457590)Chemical sciencesPhysical chemistryMicrocantilever bendingAlloy 725Heat treatmentHydrogen embrittlementGrain boundary<p>In situ electrochemical microcantilever bending tests were conducted in this study to investigate the role of grain boundaries (GBs) in hydrogen embrittlement (HE) of Alloy 725. Specimens were prepared under three different heat treatment conditions and denoted as solution-annealed (SA), aged (AG) and over-aged (OA) samples. For single-crystal beams in an H-containing environment, all three heat-treated samples exhibited crack formation and propagation; however, crack propagation was more severe in the OA sample. The anodic extraction of H presented similar results as those under the H-free condition, indicating the reversibility of the H effect under the tested conditions. Bi-crystal micro-cantilevers bent under H-free and H-charged conditions revealed the significant role of the GB in the HE of the beams. The results indicated that the GB in the SA sample facilitated dislocation dissipation, whereas for the OA sample, it caused the retardation of crack propagation. For the AG sample, testing in an H-containing environment led to the formation of a sharp, severe crack along the GB path.</p><h2>Other Information</h2> <p> Published in: International Journal of Hydrogen Energy<br> License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.ijhydene.2022.01.251" target="_blank">https://dx.doi.org/10.1016/j.ijhydene.2022.01.251</a></p>2022-03-14T09:00:00ZTextJournal contributioninfo:eu-repo/semantics/publishedVersiontextcontribution to journal10.1016/j.ijhydene.2022.01.251https://figshare.com/articles/journal_contribution/Role_of_grain_boundaries_in_hydrogen_embrittlement_of_alloy_725_single_and_bi-crystal_microcantilever_bending_study/26889097CC BY 4.0info:eu-repo/semantics/openAccessoai:figshare.com:article/268890972022-03-14T09:00:00Z |
| spellingShingle | Role of grain boundaries in hydrogen embrittlement of alloy 725: single and bi-crystal microcantilever bending study Iman Taji (19457578) Chemical sciences Physical chemistry Microcantilever bending Alloy 725Heat treatment Hydrogen embrittlement Grain boundary |
| status_str | publishedVersion |
| title | Role of grain boundaries in hydrogen embrittlement of alloy 725: single and bi-crystal microcantilever bending study |
| title_full | Role of grain boundaries in hydrogen embrittlement of alloy 725: single and bi-crystal microcantilever bending study |
| title_fullStr | Role of grain boundaries in hydrogen embrittlement of alloy 725: single and bi-crystal microcantilever bending study |
| title_full_unstemmed | Role of grain boundaries in hydrogen embrittlement of alloy 725: single and bi-crystal microcantilever bending study |
| title_short | Role of grain boundaries in hydrogen embrittlement of alloy 725: single and bi-crystal microcantilever bending study |
| title_sort | Role of grain boundaries in hydrogen embrittlement of alloy 725: single and bi-crystal microcantilever bending study |
| topic | Chemical sciences Physical chemistry Microcantilever bending Alloy 725Heat treatment Hydrogen embrittlement Grain boundary |