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Electrochemical Evaluation of Radiation-Induced Segregation in Austenitic Stainless Steels with Oversize Solute Addition

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Title Electrochemical Evaluation of Radiation-Induced Segregation in Austenitic Stainless Steels with Oversize Solute Addition
 
Creator AHMEDABADI, PM
KAIN, V
GUPTA, M
SAMAJDAR, I
SHARMA, S
BHAGWAT, P
WATANABE, Y
 
Subject atomic force microscopy
austenitic stainless steel
cold-work
electrochemical potentiokinetic reactivation
oversize solute
proton-irradiation
GRAIN-BOUNDARY SEGREGATION
CR-NI ALLOYS
ELECTRON-IRRADIATION
CORROSION-RESISTANCE
ION IRRADIATION
BEHAVIOR
MICROSTRUCTURE
SENSITIZATION
EVOLUTION
ELEMENTS
 
Description Effect of different levels of oversize element, cerium, on radiation-induced segregation (RIS) in type 316 stainless steel was investigated. The effect of prior cold-work on RIS was also investigated. Samples with 0.00, 0.01, and 0.04 wt.% cerium were irradiated to 0.70 dpa using 4.8 MeV protons at 300 A degrees C. Characterization of proton-irradiated specimens was carried out using electrochemical potentiokinetic reactivation (EPR) test followed by atomic force microscopic examination. The specimen with prior cold-work (without cerium addition) showed the lowest EPR values indicating the lowest chromium depletion in this material. The specimen with 0.04 wt.% cerium showed the lower EPR value as compared to the specimen with 0.01 wt.% Ce. The irradiated specimen with prior cold-work showed linear features after the EPR tests and such features were attributed to decoration of dislocations, generated due to prior cold-work, by point defects produced during irradiation. The resistance to RIS offered by cold-work (linear features) has been more effective as compared to that by the addition of oversize solute addition.
 
Publisher SPRINGER
 
Date 2014-10-17T05:54:12Z
2014-10-17T05:54:12Z
2012
 
Type Article
 
Identifier JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 21(11)2472-2479
http://dx.doi.org/10.1007/s11665-012-0201-8
http://dspace.library.iitb.ac.in/jspui/handle/100/16118
 
Language en