Towards simulation of dislocation-based creep mechanisms: Application to oxide dispersion strengthening steels

This paper presents an experimental study on the micro-creep response of a model oxide dispersion Strengthening (ODS) ferritic steel, using high temperature nano-indentation testing. The results are interpreted using a theoretical approach based on different dislocation climb mechanisms, accounting for the present testing conditions: high stress and high dislocation density. This work is regarded as a first step towards implementation of dislocation-based creep mechanisms in advanced dislocation dynamics simulations. (authors)