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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/11480

Title: THE INFLUENCE OF AGING ON THE INTERGRANULAR CORROSION OF 22-CHROMIUM 5-NICKEL DUPLEX STAINLESS-STEEL
Authors: RAVINDRANATH, K
MALHOTRA, SN
Keywords: sigma-phase precipitation
environments
Issue Date: 1995
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Citation: CORROSION SCIENCE, 37(1), 121-+
Abstract: Duplex stainless steels are widely used in severe corrosive environments because of their good corrosion performance. This paper deals with the influence of aging treatments on the intergranular corrosion (IGC) resistance of a commercial duplex stainless steel, SAF 2205. Duplex stainless steel was given aging treatments in the range 773-1173 K for time periods ranging from 6 min to 100 h. Optical microscopy and XRD was carried out on the aged stainless steels for the microstructural study. The aged samples were evaluated for the IGC susceptibility with the ASTM standard practices. Potentiodynamic cyclic polarization studies were also carried out to investigate the influence of aging treatments on the passivity breakdown. The results indicate that the sigma phase gets precipitated and is responsible for grain boundary attack.
URI: http://dx.doi.org/10.1016/0010-938X(94)00120-U
http://dspace.library.iitb.ac.in/xmlui/handle/10054/11480
http://hdl.handle.net/10054/11480
ISSN: 0010-938X
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