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Orientation Dependent Recovery in Interstitial Free Steel

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Title Orientation Dependent Recovery in Interstitial Free Steel
 
Creator KHATIRKAR, R
VADAVADAGI, B
SHEKHAWAT, SK
HALDAR, A
SAMAJDAR, I
 
Subject recovery
IF steel
dislocations
X-ray diffraction
line profile analysis
strain localizations
SIBM
misorientation
LOW-CARBON STEELS
IF-STEEL
STRAIN LOCALIZATIONS
TEXTURE DEVELOPMENT
ANNEALING TEXTURES
PARTICLE-SIZE
RECRYSTALLIZATION
DEFORMATION
ALLOY
IRON
 
Description Cold rolled (40, 60 and 80% thickness reductions from hot-band) interstitial free (IF) steel samples were recovered at 500 degrees C for different times (15 min to 32 h). The recovery kinetics, studied through a combination of X-ray line profile analysis and high resolution electron diffraction, were best represented by logarithmic relationship. Though the kinetics was dependent on the prior deformation, gamma(ND//< 111 >) fibre clearly had stronger recovery than theta(ND/< 100 >) fibre. Recovery was observed, statistically to create grain interior strain localizations: an orientation independent phenomenon. Increase in misorientation across such strain localizations was, however, orientation dependent. This was responsible for enhanced in-grain misorientation in recovered gamma-fibre grains/bands. Extended recovery of 80% pre-deformed samples also led to coarsening of gamma-fibre bands: strain induced boundary migration (SIBM) or uniform movement of gamma-fibre boundaries into neighbouring non gamma-fibre orientations.
 
Publisher IRON STEEL INST JAPAN KEIDANREN KAIKAN
 
Date 2014-10-16T06:32:08Z
2014-10-16T06:32:08Z
2012
 
Type Article
 
Identifier ISIJ INTERNATIONAL, 52(5)884-893
http://dspace.library.iitb.ac.in/jspui/handle/100/15441
 
Language en