In-Situ Hollow Sample Setup Design for Mechanical Characterisation of Gaseous Hydrogen Embrittlement of Pipeline Steels and Welds
This work discusses the design and demonstration of an in-situ test setup for testing pipeline steels in a high pressure gaseous hydrogen (H<sub>2</sub>) environment. A miniature hollow pipe-like tensile specimen was designed that acts as the gas containment volume during the test. Speci...
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| Format: | Article |
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MDPI AG
2021-08-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/8/1242 |
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| author | Tim Boot Ton (A. C.) Riemslag Elise (T. E.) Reinton Ping Liu Carey L. Walters Vera Popovich |
| author_facet | Tim Boot Ton (A. C.) Riemslag Elise (T. E.) Reinton Ping Liu Carey L. Walters Vera Popovich |
| author_sort | Tim Boot |
| collection | DOAJ |
| description | This work discusses the design and demonstration of an in-situ test setup for testing pipeline steels in a high pressure gaseous hydrogen (H<sub>2</sub>) environment. A miniature hollow pipe-like tensile specimen was designed that acts as the gas containment volume during the test. Specific areas of the specimen can be forced to fracture by selective notching, as performed on the weldment. The volume of H<sub>2</sub> used was minimised so the test can be performed safely without the need of specialised equipment. The setup is shown to be capable of characterising Hydrogen Embrittlement (HE) in steels through testing an X60 pipeline steel and its weldment. The percentage elongation (%El) of the base metal was found to be reduced by 40% when tested in 100 barg H<sub>2</sub>. Reduction of cross-sectional area (%RA) was found to decrease by 28% and 11% in the base metal and weld metal, respectively, when tested in 100 barg H<sub>2</sub>. Benchmark test were performed at 100 barg N<sub>2</sub> pressure. SEM fractography further indicated a shift from normal ductile fracture mechanisms to a brittle transgranular (TG) quasi-cleavage (QC) type fracture that is characteristic of HE. |
| first_indexed | 2024-03-10T08:35:57Z |
| format | Article |
| id | doaj.art-2cec1de7337e490ebb81470b4c9ab06d |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T08:35:57Z |
| publishDate | 2021-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-2cec1de7337e490ebb81470b4c9ab06d2023-11-22T08:41:38ZengMDPI AGMetals2075-47012021-08-01118124210.3390/met11081242In-Situ Hollow Sample Setup Design for Mechanical Characterisation of Gaseous Hydrogen Embrittlement of Pipeline Steels and WeldsTim Boot0Ton (A. C.) Riemslag1Elise (T. E.) Reinton2Ping Liu3Carey L. Walters4Vera Popovich5Department of Materials Science & Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The NetherlandsDepartment of Materials Science & Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The NetherlandsDepartment of Materials Science & Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The NetherlandsIntecsea, Wilhelmina van Pruisenweg 2, 2595 AN Den Haag, The NetherlandsDepartment of Maritime Transport & Technology, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The NetherlandsDepartment of Materials Science & Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The NetherlandsThis work discusses the design and demonstration of an in-situ test setup for testing pipeline steels in a high pressure gaseous hydrogen (H<sub>2</sub>) environment. A miniature hollow pipe-like tensile specimen was designed that acts as the gas containment volume during the test. Specific areas of the specimen can be forced to fracture by selective notching, as performed on the weldment. The volume of H<sub>2</sub> used was minimised so the test can be performed safely without the need of specialised equipment. The setup is shown to be capable of characterising Hydrogen Embrittlement (HE) in steels through testing an X60 pipeline steel and its weldment. The percentage elongation (%El) of the base metal was found to be reduced by 40% when tested in 100 barg H<sub>2</sub>. Reduction of cross-sectional area (%RA) was found to decrease by 28% and 11% in the base metal and weld metal, respectively, when tested in 100 barg H<sub>2</sub>. Benchmark test were performed at 100 barg N<sub>2</sub> pressure. SEM fractography further indicated a shift from normal ductile fracture mechanisms to a brittle transgranular (TG) quasi-cleavage (QC) type fracture that is characteristic of HE.https://www.mdpi.com/2075-4701/11/8/1242hydrogen embrittlementpipeline steelin-situ mechanical testingfractoragphy |
| spellingShingle | Tim Boot Ton (A. C.) Riemslag Elise (T. E.) Reinton Ping Liu Carey L. Walters Vera Popovich In-Situ Hollow Sample Setup Design for Mechanical Characterisation of Gaseous Hydrogen Embrittlement of Pipeline Steels and Welds Metals hydrogen embrittlement pipeline steel in-situ mechanical testing fractoragphy |
| title | In-Situ Hollow Sample Setup Design for Mechanical Characterisation of Gaseous Hydrogen Embrittlement of Pipeline Steels and Welds |
| title_full | In-Situ Hollow Sample Setup Design for Mechanical Characterisation of Gaseous Hydrogen Embrittlement of Pipeline Steels and Welds |
| title_fullStr | In-Situ Hollow Sample Setup Design for Mechanical Characterisation of Gaseous Hydrogen Embrittlement of Pipeline Steels and Welds |
| title_full_unstemmed | In-Situ Hollow Sample Setup Design for Mechanical Characterisation of Gaseous Hydrogen Embrittlement of Pipeline Steels and Welds |
| title_short | In-Situ Hollow Sample Setup Design for Mechanical Characterisation of Gaseous Hydrogen Embrittlement of Pipeline Steels and Welds |
| title_sort | in situ hollow sample setup design for mechanical characterisation of gaseous hydrogen embrittlement of pipeline steels and welds |
| topic | hydrogen embrittlement pipeline steel in-situ mechanical testing fractoragphy |
| url | https://www.mdpi.com/2075-4701/11/8/1242 |
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