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Properties of vacancy clusters in FeMnNi alloys for the parameterization of OKMC models

Abstract : This talk will present an investigation of the properties (stability and mobility) of vacancy clusters of varying size and composition in FeMnNi model alloys, performed by means of atomistic kinetic Monte Carlo (KMC) simulations. This study provides a necessary dataset for the implementation of object KMC simulations of long-term RPV microstructure evolution. The results show that Mn and Ni atoms considerably reduce the mobility of small vacancy clusters, which is shown in a parallel talk to be one of the key phenomena leading the microstructure evolution of irradiated FeMnNi model alloys and RPV steels.
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L. Messina, M. Chiapetto, C. Becquart, C. Domain, P. Olsson, et al.. Properties of vacancy clusters in FeMnNi alloys for the parameterization of OKMC models. International Group for Radiation Damage in Materials (IGRDM-19), Apr 2016, Asheville NC, United States. ⟨cea-02435105⟩

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