| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5440209 | Corrosion Science | 2017 | 13 Pages |
Abstract
The intergranular corrosion (IGC) susceptibility of 2024 Al alloy during re-ageing after solution treating and cold-rolling was investigated by accelerated corrosion testing, open circuit potential testing, transmission electron microscopy and scanning electron microscopy. The absence of IGC in both the peak-re-aged and over-re-aged samples is related to the dislocation pile-ups which prevent the supersaturated solutes from diffusing into the grain boundaries and precipitating the continuous S-Al2CuMg phase. The aggregated pitting corrosion in the over-re-aged samples arises from the S-phase precipitates on the dislocation cell walls which accelerate the anodic dissolution of the cell interiors.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Zhixiu Wang, Peng Chen, Hai Li, Bijun Fang, Renguo Song, Ziqiao Zheng,