Journal
SCRIPTA MATERIALIA
Volume 83, Issue -, Pages 1-4Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2014.03.005
Keywords
Nanostructure; Residual stresses; Stress relaxation; Dislocation nucleation; Hollow core-shell nanoparticles
Categories
Funding
- Ministry of Education and Science of the Russian Federation [220]
- Togliatti State University [14.B25.31.0011]
- St Petersburg State Polytechnical University
- ITMO University
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A theoretical model is suggested to determine the critical conditions for generation of circular prismatic misfit dislocation loops in hollow core shell nanoparticles. Based on a strict solution of the linear elasticity boundary-value problem for a circular prismatic dislocation loop in a free-surface shell, we examine the loop formation energy in the nanoparticle and show a potential opportunity to fabricate hollow, coherently bonded, i.e. dislocation-free, core-shell nanoparticles by using thin-wall shells with inner-to-outer radii ratio >0.8 as supporting cores. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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