Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7986086 | Micron | 2018 | 17 Pages |
Abstract
In the present study a stainless, high strength, ferritic (non-martensitic) steel was analysed regarding microstructure and particle evolution. The preceding hot-rolling process of the steel results in the formation of sub-grain structures, which disappear over time at high temperature. Besides that the formation of particle-free zones was observed. The pronounced formation of these zones preferentially appears close to high angle grain boundaries and is considered to be responsible for long-term material failure under creep conditions. The reasons for this are lacking particle hardening and thus a concentration and accumulation of deformation in the particle free areas close to the grain boundaries. Accordingly in-depth investigations were performed by electron microscopy to analyse dislocation behaviour and its possible effect on the mechanical response of these weak areas.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Jennifer Lopez Barrilao, Bernd Kuhn, Egbert Wessel,