Hydrogen trapping and fatigue crack growth property of low-carbon steel in hydrogen-gas environment
| Autor: | Michio Yoshikawa, Saburo Matsuoka, Junichiro Yamabe, Hisao Matsunaga |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Hydrogen Carbon steel chemistry.chemical_element 02 engineering and technology Trapping engineering.material Thermal diffusivity Industrial and Manufacturing Engineering Crack closure Acceleration 0502 economics and business General Materials Science 050207 economics Hydrogen concentration Composite material Mechanical Engineering 05 social sciences Metallurgy Paris' law 021001 nanoscience & nanotechnology chemistry Mechanics of Materials Modeling and Simulation engineering 0210 nano-technology |
| Zdroj: | International Journal of Fatigue. 102:202-213 |
| ISSN: | 0142-1123 |
| DOI: | 10.1016/j.ijfatigue.2017.04.010 |
| Popis: | Fatigue crack growth (FCG) tests for compact-tension specimens of low-carbon steel were performed under various combinations of hydrogen pressures (0.1–90 MPa), test frequencies (0.001–10 Hz), and test temperatures (room temperature, 363 K, and 423 K). For quantifying the FCG acceleration, the hydrogen trapping and diffusivity of prestrained specimens were determined. Depending on the test conditions, the FCG was accelerated. The hydrogen-assisted FCG acceleration always accompanied localized plastic deformations near the crack tip. The onset of the FCG acceleration was roughly quantified by using a simplified parameter representing the gradient of the hydrogen concentration at the crack tip. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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