Observatorio de I+D+i UPM

Descripción
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.
Internacional	Si
Nombre congreso	Computer Simulations of Radiation Effects in Solids (COSIRES 2012)
Tipo de participación	960
Lugar del congreso	Santa Fe, USA
Revisores	Si
ISBN o ISSN	0000-0000
DOI	10.1016/j.nimb.2012.09.024
Fecha inicio congreso	24/06/2012
Fecha fin congreso	29/06/2012
Desde la página	1
Hasta la página	5
Título de las actas	Publicación online desde el 6 de octubre de 2012 journal homepage: www.elsevier.com/locate/nimb

Esta actividad pertenece a memorias de investigación

• 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)

• Creador: Grupo de Investigación: Fusión Nuclear Inercial y Tecnología de fusión
• Departamento: Ingeniería Nuclear
• Centro o Instituto I+D+i: Instituto de Fusión Nuclear