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Near boundary gradient zone and sensitization control in austenitic stainless steel

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Title Near boundary gradient zone and sensitization control in austenitic stainless steel
 
Creator SRINIVASAN, N
KAIN, V
BIRBILIS, N
KRISHNA, KVM
SHEKHAWAT, S
SAMAJDAR, I
 
Subject STRESS-CORROSION CRACKING
PRIOR COLD WORK
LOW-TEMPERATURE SENSITIZATION
COINCIDENCE SITE LATTICE
GRAIN-BOUNDARY
INTERGRANULAR CORROSION
CHROMIUM-DEPLETION
CHARACTER-DISTRIBUTION
CARBIDE PRECIPITATION
PERCOLATION THEORY
Stainless steel
SEM
Polarization
Potentiostatic
Effects of strain
Intergranular corrosion
 
Description The dependence of degree of sensitization on partially deformed (rolled and then sensitized) microstructure of 304L stainless steel was investigated. Structures with visible grain fragmentation, or clear reductions in grain size, showed a poor resistance to sensitization. However, non-fragmented deformed grains with clear presence of near boundary orientation gradients provided an improved resistance. Bulk statistical data were further corroborated through direct observations from electron backscattered diffraction (EBSD) and white light interferometry (WLI). EBSD quantified the near boundary gradient zones (NBGZ) while WLI characterized localized corrosion. Scaling between grain average depth of attack and dimension of NBGZ was established. (C) 2015 Elsevier Ltd. All rights reserved.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2016-01-14T13:32:54Z
2016-01-14T13:32:54Z
2015
 
Type Article
 
Identifier CORROSION SCIENCE, 100,544-555
0010-938X
1879-0496
http://dx.doi.org/10.1016/j.corsci.2015.08.027
http://dspace.library.iitb.ac.in/jspui/handle/100/17624
 
Language en