Grain boundary energy and relative ion damage: experimental observation and molecular dynamics simulation
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 γ GB (grain boundary energy). Controlled focused ion beam damage, with Ga + (galium) ions, provided...
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Published in: | Philosophical magazine letters 2014-09, Vol.94 (9), p.601-608 |
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Main Authors: | , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | 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 γ
GB
(grain boundary energy). Controlled focused ion beam damage, with Ga
+
(galium) ions, provided a clear scaling between γ
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 γ
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 γ
GB
dependence of experimental ion damage. |
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ISSN: | 0950-0839 1362-3036 |
DOI: | 10.1080/09500839.2014.951706 |