Abstract
In the present work, an ODS 12 Cr steel was characterized using Electron Microscopy techniques, in an as-received condition and after annealing treatments between 773 K and 1573 K. Results show a complex microstructure, with the presence of fine Y–Ti–O nanoparticles dispersed in the matrix. After annealing at 1573 K, the average diameter of Y–Ti–O nanoparticles increases from ~ 4 to ~ 7 nm and partial recrystallization occurs. The trapping behavior of deuterium in the steel in its as-received state and annealed at 1573 K was investigated. Samples were exposed to low-energy deuterium plasma and analyzed with thermal desorption spectroscopy, after waiting times of 1 day and 25 days. The samples measured 1 day after exposure released a higher total amount of deuterium than the ones measured after 25 days. The effect of waiting time is explained by the release of deuterium, at 300 K, from sites with low activation energy for detrapping, Ed. In the as-received condition, part of the deuterium detrapped at 300 K was re-trapped by high-Ed sites. For the samples in the annealed condition, the redistribution of deuterium from low-Ed to high-Ed sites was not observed, but the total amount of deuterium released was higher.
| Original language | English |
|---|---|
| Pages (from-to) | 874-892 |
| Number of pages | 19 |
| Journal | Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science |
| Volume | 53 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - Mar 2022 |
Bibliographical note
Funding Information:This research was carried out under project number T16010e in the framework of the Partnership Program of the Materials innovation institute M2i ( www.m2i.nl ), supported by the Dutch government, and the Dutch Institute for Fundamental Energy Research (DIFFER) ( www.differ.nl ), which is part of the Netherlands Organization for Scientific Research (NWO) ( www.nwo.nl ). The present work has also been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom Research and Training programme 2014–2018 and 2019–2020, under grant agreement n. 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission. The authors would like to thank Dr. Mercedes Hernandez Mayoral, from the Department of Technology, Division of Materials for Energy Interest, CIEMAT, Madrid, for the clarifying discussion regarding the Transmission Electron Microscopy results.
Funding Information:
This research was carried out under project number T16010e in the framework of the Partnership Program of the Materials innovation institute M2i (www.m2i.nl ), supported by the Dutch government, and the Dutch Institute for Fundamental Energy Research (DIFFER) (www.differ.nl ), which is part of the Netherlands Organization for Scientific Research (NWO) (www.nwo.nl ). The present work has also been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom Research and Training programme 2014?2018 and 2019?2020, under grant agreement n. 633053. The views and opinions expressed herein do not necessarily reflect those of the European Commission. The authors would like to thank Dr. Mercedes Hernandez Mayoral, from the Department of Technology, Division of Materials for Energy Interest, CIEMAT, Madrid, for the clarifying discussion regarding the Transmission Electron Microscopy results. VMP: conceptualization, methodology, validation, formal analysis, investigation, resources, data curation, writing?original draft, writing?review and editing. S-CW: conceptualization, methodology, formal analysis, resources, writing?review and editing. TM: conceptualization, methodology, resources, writing?review and editing. HS: term, conceptualization, methodology, validation, formal analysis, investigation, resources, writing?review and editing, supervision. JS: term, conceptualization, validation, writing?review and editing, supervision, project administration. The authors declare that they have no competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.