کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1469786 | 990309 | 2011 | 10 صفحه PDF | دانلود رایگان |

Standard test methods such as the electrochemical potentiokinetic reactivation test (EPR) and double-loop EPR test (DL-EPR) are commonly used to characterise sensitisation behaviour in austenitic stainless steels and nickel-based alloys. In this study, the DL-EPR test is augmented by large-area image analysis (IA) to characterise and quantify the networks of attacked grain boundaries. A new analysis approach that is based on a grain boundary cluster parameter is proposed to describe the network of corrosion susceptible grain boundaries, which may be estimated from electron backscatter diffraction (EBSD) data. This method may provide a better assessment of the relative DOS of different heats of austenitic stainless steels.
► A new approach has been introduced to obtain the degree of sensitisation (DOS).
► This new approach is more accurate than standard methods.
► This may be used to compare the DOS of microstructures of different characteristics.
► The length of attacked boundaries is described by cluster compactness parameter.
Journal: Corrosion Science - Volume 53, Issue 12, December 2011, Pages 4213–4222