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Influence of nitrogen on the pitting corrosion behavior of 904L weld clad

DSpace at IIT Bombay

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Title Influence of nitrogen on the pitting corrosion behavior of 904L weld clad
 
Creator RAJA, VS
VARSHNEY, SK
RAMAN, R
KULKARNI, SD
 
Subject austenitic stainless-steel
resistance
metals
 
Description The effect of nitrogen on the weld cladding of 904L filler metal towards microstructure and electrochemical corrosion was investigated. The initial addition of nitrogen to the shielding gas was found to decrease the pitting resistance of the clad as compared to that obtained without nitrogen addition. Subsequent additions of nitrogen, however, gradually enhanced the pitting resistance. Microstructural examination showed that secondary austenitic phase formed along the interdendritic cell boundaries of the primary austenite, in the absence of nitrogen addition to the shielding gas, offered good resistance to the pitting corrosion of the interdendritic cell boundaries. On initial introduction of N, reduction in the formation of secondary austenite occurred making the clad inferior to pitting corrosion resistance. Subsequent additions of N decreased the formation of secondary austenite, enhanced pitting resistance of the weld clad by stabilizing the passivity of the interdendritic cell boundaries. (C) 1998 . .
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2011-08-25T08:06:41Z
2011-12-26T12:56:59Z
2011-12-27T05:46:38Z
2011-08-25T08:06:41Z
2011-12-26T12:56:59Z
2011-12-27T05:46:38Z
1998
 
Type Article
 
Identifier CORROSION SCIENCE, 40(10), 1609-1625
0010-938X
http://dx.doi.org/10.1016/S0010-938X(97)00174-1
http://dspace.library.iitb.ac.in/xmlui/handle/10054/10949
http://hdl.handle.net/10054/10949
 
Language en