Abstract
The effect of yttrium and nanoclusters on the high-temperature oxidation behavior of Fe-14Cr-3W-0.4Ti nano-structured ferritic oxide dispersion- strengthened alloys was investigated. For comparison purposes, conventional stainless steels with the same chemical composition were studied as well. Long-term oxidation tests were conducted at 800 C for up to 2000 h in atmospheric air. The mass-gain versus time curves were obtained and the microstructure and chemical elements distribution in different regions of the specimens after oxidation were then analyzed by SEM/EDS and XRD. The experimental results showed that an addition of yttrium to Fe-14C-3W-0.4Ti alloy sufficiently reduced the oxidation rate. However, ODS processing to precipitate nanoclusters is a more effective means of improving high-temperature oxidation rather than a simple yttrium addition.
Original language | English |
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Pages (from-to) | 1-8 |
Number of pages | 8 |
Journal | Thermochimica Acta |
Volume | 579 |
DOIs | |
State | Published - Mar 10 2014 |
Keywords
- Ball milling
- Grain size
- Nanoparticle
- Oxidation
- Oxide dispersion-strengthened alloy
- Yttrium