In situ electrochemical microcantilever bending test: A new insight into hydrogen enhanced cracking
| Autor: | Yun Deng, Bjørn Rune Sørås Rogne, Nousha Kheradmand, Afrooz Barnoush, Tarlan Hajilou |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Hydrogen Mechanical Engineering Bent molecular geometry Metallurgy Metals and Alloys Nucleation chemistry.chemical_element 02 engineering and technology Bending 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Electrochemical cell chemistry Mechanics of Materials 0103 physical sciences General Materials Science Composite material Dislocation 0210 nano-technology Embrittlement Hydrogen embrittlement |
| Zdroj: | Scripta Materialia. 132:17-21 |
| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2017.01.019 |
| Popis: | Single crystalline microcantilevers of Fe–3wt% Si were bent while electrochemically hydrogen (H) charged in situ inside a miniaturized electrochemical cell and are compared with cantilevers bent in air. Yield point decreases, crack initiation and propagation were observed for the cantilevers bent in the presence of H, while notch blunting occurred for the cantilevers bent in air. The results show H enhanced dislocation nucleation and H pinning of dislocation at the crack tip are responsible for embrittlement. |
| Databáze: | OpenAIRE |
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