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Effect of nitrogen addition on the stress corrosion cracking behavior of 904 L stainless steel welds in 288 °C deaerated water

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Title Effect of nitrogen addition on the stress corrosion cracking behavior of 904 L stainless steel welds in 288 °C deaerated water
 
Creator NAGE, DEEPASHRI D
RAJA, VS
 
Subject tensile strength
stainless steel
tensile testing
high pressure effects
 
Description This paper concerns with the effect of nitrogen addition to 904 L stainless steel (SS) welds on their stress corrosion cracking (SCC) behavior in high temperature (288 °C) and high pressure (1050 psi) water of high oxygen content (100 ppb) and high conductivity (2.5 μS/cm). For this study, 316 L SS base plate TIG welded with 904 L SS filler wire and with nitrogen contents of 0.027, 0.058 and 0.095 wt.% were used. Flat pin-loaded tensile specimens were fabricated from transverse welds, with the weld in the gauge length. Slow strain rate tests (SSRT) were carried out at a strain rate of 2.2 × 10−6 s−1. The study shows that the samples, when tested in air, failed at the weld fusion zone for 0.027 and 0.058 wt.% N and at the base metal for 0.095 wt.% N. In the environment, the samples failed in the base metal except the one with least nitrogen content (0.027 wt.%). With nitrogen addition, as the failure location shifted to the base alloy, the weld seemed to acquire SCC resistance and became even more resistant than the base alloy.
 
Publisher Elsevier
 
Date 2009-04-28T05:24:50Z
2011-12-08T06:38:28Z
2011-12-26T13:01:42Z
2011-12-27T05:46:20Z
2009-04-28T05:24:50Z
2011-12-08T06:38:28Z
2011-12-26T13:01:42Z
2011-12-27T05:46:20Z
2006
 
Type Article
 
Identifier Corrosion Science 48(8), 2317-2331
0010-938X
10.1016/j.corsci.2005.08.001
http://hdl.handle.net/10054/1256
http://dspace.library.iitb.ac.in/xmlui/handle/10054/1256
 
Language en