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Corrosion characterisation of laser beam and tungsten inert gas weldment of nickel base alloys: Micro-cell technique

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Title Corrosion characterisation of laser beam and tungsten inert gas weldment of nickel base alloys: Micro-cell technique
 
Creator ABRAHAM, GJ
KAIN, V
DEY, GK
RAJA, VS
 
Subject TYPE-304 STAINLESS-STEEL
SENSITIZED INCONEL-600
CRACKING
GROWTH
MICROSTRUCTURE
TETRATHIONATE
INITIATION
BEHAVIOR
Superalloys
Polarisation
Pitting corrosion
Welding
 
Description The electrochemical studies using micro-cell technique gave new understanding of electrochemical behaviour of nickel base alloys in solution annealed and welded conditions. The welding simulated regions depicted varied micro structural features. In case of tungsten inert gas (TIG) weldments, the weld fusion zone (WFZ) showed least corrosion resistance among all other regions. For laser beam (LB) weldments it was the heat-affected zone (HAZ) that showed comparatively high stable anodic current density. The high heat input of TIG welding resulted in slower heat dissipation hence increased carbide precipitation and segregation in WFZ resulting in high stable anodic current density. (C) 2014 Elsevier Ltd. All rights reserved.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2016-01-14T13:31:19Z
2016-01-14T13:31:19Z
2015
 
Type Article
 
Identifier CORROSION SCIENCE, 93,1-8
0010-938X
1879-0496
http://dx.doi.org/10.1016/j.corsci.2014.12.016
http://dspace.library.iitb.ac.in/jspui/handle/100/17621
 
Language en