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Grain boundary energy and relative ion damage: experimental observation and molecular dynamics simulation

DSpace at IIT Bombay

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Title Grain boundary energy and relative ion damage: experimental observation and molecular dynamics simulation
 
Creator REVELLY, AK
MONPARA, G
SINGH, RP
PANWAR, AS
KRISHNA, KVM
TEWARI, R
SRIVASTAVA, D
DEY, GK
SAMAJDAR, I
 
Subject ion damage
grain boundary energy
molecular dynamics
Zirconium
EBSD
FIB
INTERGRANULAR CORROSION
SINGLE-CRYSTALS
ZIRCONIUM
SENSITIZATION
RADIATION
ALLOYS
 
Description In large-grained (>1 mm grain size), high-purity (200 ppm of oxygen as major impurity), single-phase Zirconium: a combination of thermal grooving and molecular statics (MS) enabled measurements of gamma GB (grain boundary energy). Controlled focused ion beam damage, with Ga+ (galium) ions, provided a clear scaling between gamma GB and damage kinetics. The latter was obtained through direct observations on apparent grain boundary width by high-resolution electron backscattered diffraction. MS simulations were also used to create tilt boundaries of different gamma GB. Molecular dynamics, on the other hand, simulated grain boundary damage through Ga+ ion implantation. Simulations, capturing the momentum transfer, reproduced a qualitatively similar trend of gamma GB dependence of experimental ion damage.
 
Publisher TAYLOR & FRANCIS LTD
 
Date 2014-12-28T11:33:57Z
2014-12-28T11:33:57Z
2014
 
Type Article
 
Identifier PHILOSOPHICAL MAGAZINE LETTERS, 94(9)601-608
0950-0839
1362-3036
http://dx.doi.org/10.1080/09500839.2014.951706
http://dspace.library.iitb.ac.in/jspui/handle/100/16370
 
Language English