Coarsening Kinetics of Y2O3 Dispersoid in New Grade of Fe-Al-Cr-Based ODS Alloy
نویسندگان
چکیده
Oxide dispersion strengthened (ODS) alloys with a high content of Al are candidate materials for extreme temperature applications such as turbine blades and other components working at temperatures significantly above 1000 °C. While oxidation kinetics Fe–Al ODS steels is frequently studied, the stability growth strengthening oxide rarely studied topic. The Fe-10Al-4Cr-4Y2O3 an experimental material, fabricated IPM by powder metallurgy route contains much higher volume fraction Y2O3 than similar materials. Stability particles our material on 24 samples aged 0.5, 1, 2, 4, 8, 16, 32 72 h 1200 °C, 1300 °C 1400 sizes least 600 individual measured each sample to obtain extensive statistical analysis particle growth. average size coarsens from 28.6 ± 0.7 nm 36.9 0.9 in series 81.4 5.6 series. evaluated activation energy coarsening 274 65 kJ. effects mechanical properties demonstrated HV measurements, which very good agreement Orowan theory.
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ژورنال
عنوان ژورنال: Metals
سال: 2022
ISSN: ['2075-4701']
DOI: https://doi.org/10.3390/met12020210