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Intergranular Corrosion Susceptibility of Alloy 600 after Autogenous Tungsten Inert Gas and Laser Beam Welding using Electrochemical Technique

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Title Intergranular Corrosion Susceptibility of Alloy 600 after Autogenous Tungsten Inert Gas and Laser Beam Welding using Electrochemical Technique
 
Creator ABRAHAM, GJ
BHAMBROO, R
KAIN, V
DEY, GK
RAJA, VS
 
Subject Alloy 600
SEM
TEM
intergranular corrosion
welding
AUSTENITIC STAINLESS-STEELS
STRESS-CORROSION
HEAT-TREATMENT
SENSITIZED ALLOY-600
CHROMIUM DEPLETION
GRAIN-BOUNDARIES
CRACKING
RESISTANCE
TEMPERATURE
CHEMISTRY
 
Description Intergranular corrosion and intergranular stress corrosion cracking is influenced by precipitation of chromium carbides at grain boundaries and formation of chromium depletion regions. The present study focuses on understanding the carbide precipitation and subsequent sensitization in the weldments of Alloy 600 using two different welding techniques. The effect of heat input on microstructure and IGC susceptibility was measured using electrochemical reactivation test. The SEM studies were done to evaluate the presence of chromium depleted regions. The carbide was indentified to be Cr7C3 using TEM. The laser beam weldments showed an increased resistance to IGC as compared to TIG weldments.
 
Publisher WALTER DE GRUYTER GMBH
 
Date 2014-12-29T04:53:42Z
2014-12-29T04:53:42Z
2014
 
Type Article
 
Identifier HIGH TEMPERATURE MATERIALS AND PROCESSES, 33(2)137-146
0334-6455
2191-0324
http://dx.doi.org/10.1515/htmp-2013-0045
http://dspace.library.iitb.ac.in/jspui/handle/100/17126
 
Language English