| Autor: |
M. Oñoro, J. Macías-Delgado, M.A. Auger, V. de Castro, T. Leguey |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Nuclear Materials and Energy, Vol 24, Iss , Pp 100758- (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2352-1791 |
| DOI: |
10.1016/j.nme.2020.100758 |
| Popis: |
The thermal stability of an ODS RAF steel has been investigated by assessing the effects of different thermal treatments on its microstructure and mechanical behavior. The ODS steel, with nominal composition Fe–14Cr–2W–0.4Ti-0.3Y2O3 (wt. %), was manufactured by mechanical alloying, compacted by hot isostatic pressing and hot cross rolling. Following the rolling process, short thermal treatments at temperatures between 1073 and 1473 K were applied, and an optimal annealing temperature of 1273 K was selected. Afterwards, two independent thermal treatments were applied. To check the effects of thermal fatigue, a set of samples was submitted to thermal cycling between 773 and 1073 K. Finally, another batch was thermally aged at 873 K for 2000 h.A Vickers microhardness analysis shows a hardening effect with the thermal cycling and the aging treatments. The cycling treatment causes a small improvement of yield and tensile strengths at test temperatures T > 773 K, without clear ductility changes. The aging treatment slightly enhances tensile properties for tests at T > 873 K, together with loss of strength and ductility in tests at T |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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