Abstract
The intergranular corrosion of Al-Mg alloys arises from sensitisation due to thermal exposure. Here, a protected low angle (8.7°) grain boundary which hinders the intergranular corrosion propagation in a sensitised (150°/7 d) Al-Mg alloy was studied in detail. Discrete β-phase was observed on this protected boundary, but with a lower continuity compared to the other fully (or partially) dissolved grain boundaries. The results herein seek to unify the relationship between β-phase continuity and grain boundary misorientation angle as critical for intergranular corrosion propagation in the studied alloy.
Original language | English |
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Pages (from-to) | 1-5 |
Number of pages | 5 |
Journal | Corrosion Science |
Volume | 133 |
DOIs | |
Publication status | Published - 1 Apr 2018 |
Keywords
- A. Alloy
- A. Aluminium
- B. SEM
- B. TEM
- C. Intergranular corrosion