Oxide dispersion strengthened CoCrFeNiMn high-entropy alloy
| Autor: | Jiri Matejicek, A. Dlouhy, Ferdinand Dobeš, Pavla Roupcová, Monika Vilémová, Zdenek Chlup, Hynek Hadraba |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Alloy Metallurgy Oxide Spark plasma sintering 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences chemistry.chemical_compound chemistry Creep Mechanics of Materials Phase (matter) Powder metallurgy 0103 physical sciences engineering General Materials Science 0210 nano-technology Dispersion (chemistry) Yttria-stabilized zirconia |
| Zdroj: | Materials Science and Engineering: A. 689:252-256 |
| ISSN: | 0921-5093 |
| DOI: | 10.1016/j.msea.2017.02.068 |
| Popis: | The CoCrFeNiMn high entropy alloy and its strengthened version by in-situ formed dispersion of yttria nano-oxides prepared via mechanical alloying were investigated. The grain refinement of the one phase FCC alloy by presence of oxides was determined by microstructural analyses to be 50%. The positive effect of oxide dispersion on the strength properties was found to be between 30% and 70% for room and elevated temperatures, respectively. The resulting creep strain rates for the strengthened alloy were significantly lower, i.e., three orders for 30 MPa stress level, comparing the initial one, therefore, the pining mechanism was among others very effective. |
| Databáze: | OpenAIRE |
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