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Effect of low partial hydrogen in a mixture with methane on the mechanical properties of X70 pipeline steel
- Source :
- International Journal of Hydrogen Energy. 45:2368-2381
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- In this study, the effect of a low partial hydrogen in a mixture with natural gas on the tensile, notched tensile properties, and fracture toughness of pipeline steel X70 is investigated. An artificial HE aging is simulated by exposing the tested sample to the mixture gas condition for 720 h. In addition, a series of tests is conducted in ambient air and 10 MPa of 100% He and H2. Overall, 10 MPa of 100% H2 significantly degrades the mechanical properties of an X70 pipeline steel. However, it is observed that the 10 MPa gas mixture with 1% H2 does not affect the mechanical properties when tested with a smooth tensile specimen. In the notched tensile test, a significant reduction in loss in the area is observed when tested with a notched specimen with a notch radius of 0.083 mm. It is also confirmed that a 10-MPa gas mixture with 1% H2 causes a remarkable reduction in the toughness. The influence of the exposure time to 1% hydrogen in a mixture with natural gas was found to be minor.
- Subjects :
- Toughness
Materials science
Hydrogen
Renewable Energy, Sustainability and the Environment
business.industry
Pipeline (computing)
Energy Engineering and Power Technology
chemistry.chemical_element
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Methane
0104 chemical sciences
chemistry.chemical_compound
Fuel Technology
Fracture toughness
chemistry
Natural gas
Ultimate tensile strength
Composite material
0210 nano-technology
business
Tensile testing
Subjects
Details
- ISSN :
- 03603199
- Volume :
- 45
- Database :
- OpenAIRE
- Journal :
- International Journal of Hydrogen Energy
- Accession number :
- edsair.doi...........e6f9f2ee510a334d884abb6d85f9550c