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Migration Barriers and Evolution of Mechanical Properties of Oxide Nanoclusters Containing Helium

Published online by Cambridge University Press:  23 February 2015

Thomas Danielson  and
Celine Hin
Thomas Danielson
Affiliation:
Virginia Polytechnic Institute and State University, Department of Materials Science and Engineering, Blacksburg, VA 24060, USA
Celine Hin
Affiliation:
Virginia Polytechnic Institute and State University, Department of Materials Science and Engineering, Blacksburg, VA 24060, USA Virginia Polytechnic Institute and State University, Department of Materials Science and Engineering, Department of Mechanical Engineering, Blacksburg, VA 24060, USA
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Abstract

High number densities of complex oxide nanoclusters in nanostructured ferritic alloys have been shown to act as effective trapping sites for the transmutation product helium. Density functional theory has been used to investigate the evolution of the mechanical properties of oxide nanoclusters as helium concentration increases. The migration barrier and migration path of helium in the oxide has also been tested in order to make a comparison with the barriers in BCC iron and offer insight to the helium trapping mechanisms of the oxides.

Keywords

nuclear materialsdefectsHe
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1743: Symposium DD/WW – Materials and Radiation Effects for Advanced Nuclear Technologies , 2015 , mrsf14-1743-ww10-04
Copyright
Copyright © Materials Research Society 2015 

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