On the suitability of slow strain rate tensile testing for assessing hydrogen embrittlement susceptibility
The onset of sub-critical crack growth during slow strain rate tensile testing (SSRT) is assessed through a combined experimental and modeling approach. A systematic comparison of the extent of intergranular fracture and expected hydrogen ingress suggests that hydrogen diffusion alone is insufficien...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Elsevier
2019
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| _version_ | 1797112763867201536 |
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| author | Martínez-Pañeda, E Harris, ZD Fuentes-Alonso, S Scully, JR Burns, JT |
| author_facet | Martínez-Pañeda, E Harris, ZD Fuentes-Alonso, S Scully, JR Burns, JT |
| author_sort | Martínez-Pañeda, E |
| collection | OXFORD |
| description | The onset of sub-critical crack growth during slow strain rate tensile testing (SSRT) is assessed through a combined experimental and modeling approach. A systematic comparison of the extent of intergranular fracture and expected hydrogen ingress suggests that hydrogen diffusion alone is insufficient to explain the intergranular fracture depths observed after SSRT experiments in a Ni–Cu superalloy. Simulations of these experiments using a new phase field formulation indicate that crack initiation occurs as low as 40% of the time to failure. The implications of such sub-critical crack growth on the validity and interpretation of SSRT metrics are then explored. |
| first_indexed | 2024-03-07T08:30:02Z |
| format | Journal article |
| id | oxford-uuid:ff219026-61cd-473e-923a-6b3eee94faaa |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T08:30:02Z |
| publishDate | 2019 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:ff219026-61cd-473e-923a-6b3eee94faaa2024-02-29T12:40:36ZOn the suitability of slow strain rate tensile testing for assessing hydrogen embrittlement susceptibilityJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:ff219026-61cd-473e-923a-6b3eee94faaaEnglishSymplectic ElementsElsevier2019Martínez-Pañeda, EHarris, ZDFuentes-Alonso, SScully, JRBurns, JTThe onset of sub-critical crack growth during slow strain rate tensile testing (SSRT) is assessed through a combined experimental and modeling approach. A systematic comparison of the extent of intergranular fracture and expected hydrogen ingress suggests that hydrogen diffusion alone is insufficient to explain the intergranular fracture depths observed after SSRT experiments in a Ni–Cu superalloy. Simulations of these experiments using a new phase field formulation indicate that crack initiation occurs as low as 40% of the time to failure. The implications of such sub-critical crack growth on the validity and interpretation of SSRT metrics are then explored. |
| spellingShingle | Martínez-Pañeda, E Harris, ZD Fuentes-Alonso, S Scully, JR Burns, JT On the suitability of slow strain rate tensile testing for assessing hydrogen embrittlement susceptibility |
| title | On the suitability of slow strain rate tensile testing for assessing hydrogen embrittlement susceptibility |
| title_full | On the suitability of slow strain rate tensile testing for assessing hydrogen embrittlement susceptibility |
| title_fullStr | On the suitability of slow strain rate tensile testing for assessing hydrogen embrittlement susceptibility |
| title_full_unstemmed | On the suitability of slow strain rate tensile testing for assessing hydrogen embrittlement susceptibility |
| title_short | On the suitability of slow strain rate tensile testing for assessing hydrogen embrittlement susceptibility |
| title_sort | on the suitability of slow strain rate tensile testing for assessing hydrogen embrittlement susceptibility |
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