Özet
The effect of the ultrafine grained silicon nitride and yttria addition to the morphological, structural, mechanical and magnetic properties of the ceramic dispersion strengthened 316 L stainless steels prepared by powder technology has been studied. Four composites have been prepared: 316 L/0.33 wt.% Si3N4, 316 L/1 wt.% Si3N4 (CDS) and 316 L/0.33 wt.% Y2O3, 316 L/1 wt.% Y2O3 (ODS). Spark plasma sintering (SPS) was used for fast compaction of milled composite powders. The hardness values have been found to be significantly higher in the cases of CDS and ODS samples in comparison to reference sample, whereas the ODS composites had lower smaller hardness than the CDS composites regardless the content of additives. The magnetic characterization of samples demonstrated that the samples exhibit ferromagnetic property already before ageing and a larger ferromagnetic component was observed as a result of thermal aging. It was proven that in the case of ODS and CDS samples with a low amount of Y2O3 or Si3N4 the saturation magnetization was slightly dependent on ageing time, however, it exhibited a noticeable change with ageing both at 600 and 800 °C for samples containing higher amount of additives.
| Orijinal dil | İngilizce |
|---|---|
| Sayfa (başlangıç-bitiş) | 46-53 |
| Sayfa sayısı | 8 |
| Dergi | Fusion Engineering and Design |
| Hacim | 145 |
| DOI'lar | |
| Yayın durumu | Yayınlandı - Ağu 2019 |
Bibliyografik not
Publisher Copyright:© 2019
Finansman
The support of Hungarian-Japanese project "Development of electromagnetic non-destructive evaluation method for aging degradation of chromium steels at high temperatures” financed by Hungarian Academy of Sciences (HAS) and Japan Society for the Promotion of Science (JSPS) is highly acknowledged. Mr. Haroune Rachid Ben Zine thanks to Hungaricum Stipendium and MTA EK project “Nanostructural ODS steel development” for support. Thanks to COST Action CA15102 Solutions for Critical Raw Materials under Extreme Conditions support. SANS measurements were carried out at the CANAM infrastructure through MŠMT project No. LM2015056 and infrastructure of Reactors LVR-15 and LR-0, which is financially supported by project LM2015074.
| Finansörler | Finansör numarası |
|---|---|
| Japan Society for the Promotion of Science | LM2015056, LR-0, LM2015074 |
| Magyar Tudományos Akadémia |
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