Thesis-2005-Hurchand.pdf (19.26 MB)
Download file

Modelling intergranular segregation in nuclear pressure vessel ferritic steels

Download (19.26 MB)
thesis
posted on 24.08.2018, 11:51 authored by Hurryramsingh Hurchand
The intergranular segregation of P atoms in steel is a major cause of nuclear pressure vessel (NPV) steel embrittlement. In this thesis, we have employed a range of computer simulation techniques to investigate radiation events, which take place in the NPV and their effect on the segregation of P atoms to the grain boundaries (GBs). Radiation events were simulated in a perfect bcc Fe lattice using the classical molecular dynamic technique. We have tested two recently developed interatomic potential models, a the second nearest-neighbour modified embedded atom method (2NN MEAM) and a new EAM potential against a conventional EAM potential for the simulation of displacement cascades. Radiation simulations in the energy range of 0.2–2 keV showed that the ballistic and the annealing phase of the cascade were sensitive to the interatomic potential employed. However, the number of Frenkel pairs produced was predicted to be similar by the three potentials, with slightly fewer for the new EAM potential. [Continues.]

Funding

EPSRC. Magnox plc.

History

School

  • Science

Department

  • Mathematical Sciences

Publisher

© H. Hurchand

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2005

Notes

A Doctoral Thesis. Submitted in partial fulfilment of the requirements for the award of Doctor of Philosophy at Loughborough University.

Language

en

Usage metrics

Keywords

Exports