Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Stability of vacancy clusters in FeCr alloys: A study of the Cr concentration dependence
Year:2012
Research Areas
  • Engineering
Information
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.
International
Si
Congress
Computer Simulations of Radiation Effects in Solids (COSIRES 2012)
960
Place
Santa Fe, USA
Reviewers
Si
ISBN/ISSN
0000-0000
10.1016/j.nimb.2012.09.024
Start Date
24/06/2012
End Date
29/06/2012
From page
1
To page
5
Publicación online desde el 6 de octubre de 2012 journal homepage: www.elsevier.com/locate/nimb
Participants
  • Autor: J.M. Sampedro (Instituto de Fusión Nuclear)
  • Autor: Emma del Rio Redondo (UPM)
  • Autor: M.J. Caturla (Universidad de Alicante)
  • Autor: A. Caro (Materials Science and Technology Division)
  • Autor: M. Caro (Materials Science and Technology Division)
  • Autor: Jose Manuel Perlado Martin (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Fusión Nuclear Inercial y Tecnología de fusión
  • Departamento: Ingeniería Nuclear
  • Centro o Instituto I+D+i: Instituto de Fusión Nuclear
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