Research Article
Determination of Susceptibility to Intergranular Corrosion of UNS 31803 Type Duplex Stainless Steel by Electrochemical Reactivation Method
Table 2
The phase volume percentages obtained from digital image analysis.
| Heat treatment | Ageing time (min) | Ferrite phase (vol. %) | Austenite phase (vol. %) | Sigma phase (vol. %) |
| Solution annealed at 1050°C, 1 h | | 54.55 | 45.45 | 0 |
| Solution annealed at 1050°C, 1 hr + aged at 725°C | 100 | 54 | 46 | 0 | 316 | 53.2 | 46.2 | 0.6 | 1000 | 32 | 49 | 19 | 3162 | 15 | 52 | 33 | 10000 | 6 | 54 | 40 | 31622 | 0 | 57 | 43 |
|
|