The hydrogen embrittlement sensitivity of duplex stainless steel with different phase fractions evaluated by in-situ mechanical testing
The influence of the austenite (γ) phase fraction on the hydrogen embrittlement of duplex stainless steel is investigated. Heat treatments are performed to create two duplex stainless steel specimens, containing 50% and 44% of austenite, respectively. Mechanical testing with and without hydrogen cha...
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| Language: | English |
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Gruppo Italiano Frattura
2020-01-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2666 |
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| author | Margo Cauwels Lisa Claeys Tom Depover Kim Verbeken |
| author_facet | Margo Cauwels Lisa Claeys Tom Depover Kim Verbeken |
| author_sort | Margo Cauwels |
| collection | DOAJ |
| description | The influence of the austenite (γ) phase fraction on the hydrogen embrittlement of duplex stainless steel is investigated. Heat treatments are performed to create two duplex stainless steel specimens, containing 50% and 44% of austenite, respectively. Mechanical testing with and without hydrogen charging reveals that significant embrittlement occurs regardless of the austenite fraction. A higher austenite fraction results in a reduced ductility loss under the presence of hydrogen. Samples with a higher ferrite fraction are embrittled more due to their higher hydrogen diffusivity. In-situ tensile tests, interrupted at the ultimate tensile strength, show hydrogen-assisted cracks on the specimen surface both in austenite and ferrite and across the α/γ interface. |
| format | Article |
| id | doaj-art-8a6e8bafa918434e9c9c9b98ffe0a141 |
| institution | DOAJ |
| issn | 1971-8993 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-8a6e8bafa918434e9c9c9b98ffe0a1412025-08-20T02:42:53ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932020-01-01145144945810.3221/IGF-ESIS.51.332666The hydrogen embrittlement sensitivity of duplex stainless steel with different phase fractions evaluated by in-situ mechanical testingMargo Cauwels0Lisa Claeys1Tom Depover2Kim Verbeken3Ghent UniversityGhent UniversityGhent UniversityGhent UniversityThe influence of the austenite (γ) phase fraction on the hydrogen embrittlement of duplex stainless steel is investigated. Heat treatments are performed to create two duplex stainless steel specimens, containing 50% and 44% of austenite, respectively. Mechanical testing with and without hydrogen charging reveals that significant embrittlement occurs regardless of the austenite fraction. A higher austenite fraction results in a reduced ductility loss under the presence of hydrogen. Samples with a higher ferrite fraction are embrittled more due to their higher hydrogen diffusivity. In-situ tensile tests, interrupted at the ultimate tensile strength, show hydrogen-assisted cracks on the specimen surface both in austenite and ferrite and across the α/γ interface.https://www.fracturae.com/index.php/fis/article/view/2666hydrogen embrittlementduplex stainless steelin-situ mechanical testing |
| spellingShingle | Margo Cauwels Lisa Claeys Tom Depover Kim Verbeken The hydrogen embrittlement sensitivity of duplex stainless steel with different phase fractions evaluated by in-situ mechanical testing Fracture and Structural Integrity hydrogen embrittlement duplex stainless steel in-situ mechanical testing |
| title | The hydrogen embrittlement sensitivity of duplex stainless steel with different phase fractions evaluated by in-situ mechanical testing |
| title_full | The hydrogen embrittlement sensitivity of duplex stainless steel with different phase fractions evaluated by in-situ mechanical testing |
| title_fullStr | The hydrogen embrittlement sensitivity of duplex stainless steel with different phase fractions evaluated by in-situ mechanical testing |
| title_full_unstemmed | The hydrogen embrittlement sensitivity of duplex stainless steel with different phase fractions evaluated by in-situ mechanical testing |
| title_short | The hydrogen embrittlement sensitivity of duplex stainless steel with different phase fractions evaluated by in-situ mechanical testing |
| title_sort | hydrogen embrittlement sensitivity of duplex stainless steel with different phase fractions evaluated by in situ mechanical testing |
| topic | hydrogen embrittlement duplex stainless steel in-situ mechanical testing |
| url | https://www.fracturae.com/index.php/fis/article/view/2666 |
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