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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/100/14125

Title: Radiation-induced segregation in desensitized type 304 austenitic stainless steel
Authors: AHMEDABADI, P
KAIN, V
ARORA, K
SAMAJDAR, I
SHARMA, SC
BHAGWAT, P
Keywords: STRESS-CORROSION CRACKING
PROTON-IRRADIATED 304-STAINLESS-STEEL
MECHANICAL RESPONSE
SENSITIZATION
SUSCEPTIBILITY
WATER
TEMPERATURE
KINETICS
BEHAVIOR
IONS
Issue Date: 2011
Publisher: ELSEVIER SCIENCE BV
Citation: JOURNAL OF NUCLEAR MATERIALS,416(3)335-344
Abstract: Radiation-induced segregation (RIS) in desensitized type 304 stainless steel (SS) was investigated using a combination of electrochemical potentiokinetic reactivation (EPR) test and atomic force microscopy (AFM). Desensitized type 304 SS was irradiated to 0.43 dpa (displacement per atom) using 4.8 MeV protons at 300 degrees C. The maximum attack in the EPR test for the irradiated desensitized SS was measured at a depth of 70 mu m from the surface. Grain boundaries and twin boundaries got attacked and pit-like features within the grains were observed after the EPR test at the depth of 70 mu m. The depth of attack, as measured by AFM, was higher at grain boundaries and pit-like features as compared to twin boundaries. It has been shown that the chromium depletion due to RIS takes place at the carbide-matrix as well as at the carbide-carbide interfaces at grain boundaries. The width of attack at grain boundaries after the EPR test of the irradiated desensitized specimen appeared larger due to the dislodgement of carbides at grain boundaries. (C) 2011 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.jnucmat.2011.06.024
http://dspace.library.iitb.ac.in/jspui/handle/100/14125
ISSN: 0022-3115
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