Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Stability of vacancy clusters in FeCr alloys: A study of the Cr concentration dependence
Year:2013
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
JCR
Si
Title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
ISBN
0168-583X
Impact factor JCR
1,211
Impact info
Volume
303
10.1016/j.nimb.2012.09.024
Journal number
From page
46
To page
50
Month
SIN MES
Ranking
Participants
  • Autor: J. Sampedro (Instituto de Fusión Nuclear, UPM)
  • Autor: Emma del Rio Redondo (UPM)
  • Autor: M.J. Caturla (Universidad de Alicante)
  • Autor: A. Caro (Materials Science and Technology Division, MST-8, Los Alamos National Laboratory)
  • Autor: M. Caro (Materials Science and Technology Division, MST-8, Los Alamos National Laboratory)
  • Autor: Jose Manuel Perlado Martin (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Fusión Nuclear Inercial y Tecnología de fusión
  • Centro o Instituto I+D+i: Instituto de Fusión Nuclear
  • Departamento: Ingeniería Nuclear
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Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
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