Microstructure and High-Temperature Strength of Fe-Al-Si(-Mo) Alloys with Refractory Metal Additives

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F25%3A00014016" target="_blank" >RIV/46747885:24210/25:00014016 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1007/s11837-025-07907-w" target="_blank" >https://doi.org/10.1007/s11837-025-07907-w</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11837-025-07907-w" target="_blank" >10.1007/s11837-025-07907-w</a>

Result language
angličtina
Original language name
Microstructure and High-Temperature Strength of Fe-Al-Si(-Mo) Alloys with Refractory Metal Additives
Original language description
The iron aluminides are intended as materials for high-temperature applications. The effect of Fe3Al-type iron aluminide multi-alloying with silicon, molybdenum, and vanadium/tungsten on the high-temperature strength was studied. The contribution of the different strengthening mechanisms to overall strengthening during high-temperature deformation in compression was discussed. It has been shown that the addition of vanadium or tungsten significantly increases the yield stress values, especially in the temperature range of 700–800°C. The influence of heat treatment on the structure and yield stress values was also investigated. After long-term annealing at 800°C, a slight decline in yield stress values occurs for both alloys compared to the as-cast state due to the precipitation of secondary phase particles. In the case of the Fe28Al5Si2Mo1W alloy, this yield stress decrease is partly compensated by the strengthening caused by fine incoherent precipitates. After short-term annealing at 1200°C, the yield stress reaches the highest values in the entire temperature range for both alloys, Fe28Al5Si2Mo1W and Fe28Al5Si2Mo1V, due to the presumed presence of new phase nuclei verified by prolongation of annealing time.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20501 - Materials engineering

Project
<a href="/en/project/EF16_019%2F0000843" target="_blank" >EF16_019/0000843: Hybrid Materials for Hierarchical Structure</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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