Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8043945 | Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms | 2012 | 4 Pages |
Abstract
Cementite Fe3C is a metastable carbide present in many steels. Depending on the treatment, the cementite can give rise to varying microstructures such as bainite and pearlite, to name a few. Cementite - being harder than pure iron - makes the resulting steel harder and tougher, enabling it to be used as a construction steel. This type of steels can be used to build fission reactors and may be used for future fusion reactors, where they will be subjected to neutron irradiation from the core. In this work we use molecular dynamics simulations to study the response of pure cementite when Fe atoms are knocked out of their lattice sites by neutrons. The Fe recoils have an energy varying between 100 and 10Â keV. It is also shown that defects in cementite are roughly one order of magnitude more aboundant than those in pure iron, even when using the same irradiation conditions and ion energies of at least 5 and 10Â keV.
Related Topics
Physical Sciences and Engineering
Materials Science
Surfaces, Coatings and Films
Authors
K.O.E. Henriksson, K. Nordlund,