2026-06-21T19:08:45Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/47632024-07-24T11:20:41Zcom_10259_9476com_10259.4_106com_10259_2604col_10259_9477
Repositorio Institucional de la Universidad de Burgos
author
Ortún Palacios, Jaime
author
Locci, Antonio Mario
author
Fadda, Sarah .
author
Delogu, Francesco
author
Cuesta López, Santiago
2018-03-21T09:59:12Z
2018-03-21T09:59:12Z
2017
1687-8434
http://hdl.handle.net/10259/4763
10.1155/2017/1079735
A continuum model of point-defects evolution during irradiation of a multilayer composite material is presented in this work. Nonstationary balance equations are used to describe production, recombination, transport, and annihilation, or removal, of vacancies and interstitials in a β-α-β three-layer system (α = Cu and β = Nb, V, or Ni). In addition, transport and trapping of point-defects at interfaces are taken into account. Numerical investigation on similarities and differences between Cu/Nb, Cu/V, and Cu/Ni systems is also performed. A general comparison of model results reveals that average vacancy concentration is typically higher than SIA one in both layers for all the systems investigated. This is a consequence of the higher diffusion rate of SIAs with respect to vacancies. Stationary state is reached without saturating interface point-defect traps by all systems but Cu/Ni for the case of SIAs. It can be also seen that Cu/Nb and Cu/V systems have a very similar behavior regarding point-defect temporal evolution in copper (layer α), while higher SIA concentration at steady state is shown therein by the Cu/Ni structure. Moreover, Cu/V system displays the lower stationary vacancy concentration in layer β.
eng
Attribution 4.0 International
Role of interface in multilayered composites under irradiation: A mathematical investigation
info:eu-repo/semantics/article
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URL
https://riubu.ubu.es/bitstream/10259/4763/1/Ort%c3%ban-AMSE_2017.pdf
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https://riubu.ubu.es/bitstream/10259/4763/6/Ort%c3%ban-AMSE_2017.pdf.txt
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Ortún-AMSE_2017.pdf.txt