Stability of vacancy clusters in FeCr alloys: A study of the Cr concentration dependence

Sampedro, Jesus and Rio Redondo, Emma del and Caturla Terol, Maria Jose and Caro, Alfredo and Caro, Magdalena and Perlado Martín, José Manuel (2013). Stability of vacancy clusters in FeCr alloys: A study of the Cr concentration dependence. "Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms", v. 303 (n. Procee); pp. 46-50. ISSN 0168-583X. https://doi.org/10.1016/j.nimb.2012.09.024.

Description

Title: Stability of vacancy clusters in FeCr alloys: A study of the Cr concentration dependence
Author/s:
  • Sampedro, Jesus
  • Rio Redondo, Emma del
  • Caturla Terol, Maria Jose
  • Caro, Alfredo
  • Caro, Magdalena
  • Perlado Martín, José Manuel
Item Type: Article
Event Title: Publicación online desde el 6 de octubre de 2012
Event Dates: 24/06/2012 - 29/06/2012
Event Location: Santa Fe, USA
Título de Revista/Publicación: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Date: 15 May 2013
ISSN: 0168-583X
Volume: 303
Subjects:
Faculty: Instituto de Fusión Nuclear (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Fe–Cr based alloys are the leading structural material candidates in the design of next generation reactors due to their high resistance to swelling and corrosion. Despite these good properties there are others, such as embrittlement, which require a higher level of understanding in order to improve aspects such as safety or lifetime of the reactors. The addition of Cr improves the behavior of the steels under irradiation, but not in a monotonic way. Therefore, understanding the changes in the Fe–Cr based alloys microstructure induced by irradiation and the role played by the alloying element (Cr) is needed in order to predict the response of these materials under the extreme conditions they are going to support. In this work we perform a study of the effect of Cr concentration in a bcc Fe–Cr matrix on formation and binding energies of vacancy clusters up to 5 units. The dependence of the calculated formation and binding energy is investigated with two empirical interatomic potentials specially developed to study radiation damage in Fe–Cr alloys. Results are very similar for both potentials showing an increase of the defect stability with the cluster size and no real dependence on Cr concentration for the binding energy.

More information

Item ID: 19909
DC Identifier: http://oa.upm.es/19909/
OAI Identifier: oai:oa.upm.es:19909
DOI: 10.1016/j.nimb.2012.09.024
Official URL: http://www.sciencedirect.com/science/article/pii/S0168583X12006106
Deposited by: Memoria Investigacion
Deposited on: 06 Nov 2013 17:38
Last Modified: 06 Sep 2017 15:30
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