Manganese and nickel solute atoms in irradiated ferritic steels play a major role in the nanostructural evolution of reactor pressure vessels (RPV), as they are responsible for the formation of embrittling nanofeatures even in the absence of copper. The stability and mobility of small vacancy–solute clusters is here studied with an atomistic kinetic Monte Carlo approach based on ab initio calculations, in order to investigate the influence of Mn and Ni on the early life of small radiation-induced vacancy clusters, and to provide the necessary parameters for advanced object kinetic Monte Carlo simulations of the RPV longterm nanostructural evolution.
|Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
|Published - Jun 2015
|2014 - COSIRES: Computer Simulation of Radiation Effects in Solids - COSIRES 2014, Alicante
Duration: 8 Jun 2014 → 13 Jun 2014