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| Content Provider | Springer Nature Link |
|---|---|
| Author | Örnek, C. Engelberg, D. L. |
| Copyright Year | 2015 |
| Abstract | Correlative electron backscatter diffraction (EBSD) and scanning Kelvin probe force microscopy (SKPFM) analysis has been carried out to characterise microstructure development and associated corrosion behaviour of as-received and 750 °C heat-treated grade 2205 duplex stainless steel. High-resolution EBSD analysis revealed the presence of σ- and χ-phase, secondary austenite, Cr$_{2}$N, and CrN after ageing treatment. SKPFM Volta potential measurements confirmed the formation of discrete reactive sites, indicating local corrosion propensity in the microstructure. Cr$_{2}$N, σ-phase, and inter-granular χ-phase had the largest net cathodic activity, followed by CrN and intra-granular χ-phase showing medium electrochemical activity, with ferrite and austenite (including secondary austenite) showing net anodic activity. Corrosion screening confirmed selective corrosion of ferrite in the as-received and 750 °C-aged conditions with the corrosion propensity of secondary phases staying in-line with SKPFM observations. Stress corrosion micro-cracks were also observed and are discussed in light of microstructure corrosion propensity. |
| Starting Page | 1931 |
| Ending Page | 1948 |
| Page Count | 18 |
| File Format | |
| ISSN | 00222461 |
| Journal | Journal of Materials Science |
| Volume Number | 51 |
| Issue Number | 4 |
| e-ISSN | 15734803 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2015-10-28 |
| Publisher Place | New York |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Materials Science Characterization and Evaluation of Materials Polymer Sciences Continuum Mechanics and Mechanics of Materials Crystallography Mechanics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics |
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