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Ultrafine grained microstructure tailoring in austenitic stainless steel for enhanced plasticity

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Title Ultrafine grained microstructure tailoring in austenitic stainless steel for enhanced plasticity
 
Creator KUMAR, BR
SHARMA, S
KASHYAP, BP
PRABHU, N
 
Subject DEFORMATION-INDUCED MARTENSITE
MECHANICAL-PROPERTIES
TENSILE DUCTILITY
NANOSTRUCTURED METALS
ROOM-TEMPERATURE
SHEAR BANDS
REVERSION
BEHAVIOR
NANOCRYSTALLINE
KINETICS
Austenitic stainless steel
Ultrafine grain microstructure
Tensile properties
Electron backscattered diffraction
 
Description Using repeated or cyclic annealing process a recrystallised ultrafine grained microstructure possessing high strength and a reasonable ductility was obtained from a heavily cold rolled Austenitic Stainless Steel. Johnson Mehl Avrami and Kolmogorov model for predicting recrystallisation process was used to optimize the process parameters for the formation of ultra-fine grained recrystallised microstructure. The microstructure evolving during thermal cycling was analyzed by electron microscopy. The tensile properties of various ultrafine grained microstructures were determined. Electron microscopy studies on tensile deformed specimens showed that there is a narrow dispersion in grain size distribution of ultrafine grained microstructure which promotes shear banding or strain localization causing impairment of the ductility or poor plastic strain hardenability. (C) 2014 Elsevier Ltd. All rights reserved.
 
Publisher ELSEVIER SCI LTD
 
Date 2016-01-15T04:34:45Z
2016-01-15T04:34:45Z
2015
 
Type Article
 
Identifier MATERIALS & DESIGN, 68,63-71
0261-3069
1873-4197
http://dx.doi.org/10.1016/j.matdes.2014.12.014
http://dspace.library.iitb.ac.in/jspui/handle/100/17770
 
Language en