Abstract
The hydrogen effect on the mechanical properties of aluminum was studied using an in situ electrochemical nanoindentation setup. The adsorption of hydrogen ions at the open circuit potential in a solution at pH 6 (less than the isoelectric point = 9.5) resulted in a change of pop-in load. Similar behavior was observed in a solution at pH 9 under cathodic polarization. The change in pop-in load is attributed to the hydrogen-induced reduction of cohesive energy and hydrogen segregation on dislocations.
| Original language | English |
|---|---|
| Pages (from-to) | 747-750 |
| Number of pages | 4 |
| Journal | Scripta Materialia |
| Volume | 58 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - May 2008 |
| Externally published | Yes |
Keywords
- Aluminum
- Dislocation nucleation
- Hydrogen embrittlement
- In situ nanoindentation
- Isoelectric point
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