Microstructure and Properties of Natural Alloy Prepared by Aluminothermic Reduction of Deep-Sea Nodules and Processed by Rapid Solidification

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F24%3A43930749" target="_blank" >RIV/60461373:22310/24:43930749 - isvavai.cz</a>
Result on the web
<a href="https://journalmt.com/artkey/mft-202402-0004_microstructure-and-properties-of-natural-alloy-prepared-by-aluminothermic-reduction-of-deep-sea-nodules-and-pro.php" target="_blank" >https://journalmt.com/artkey/mft-202402-0004_microstructure-and-properties-of-natural-alloy-prepared-by-aluminothermic-reduction-of-deep-sea-nodules-and-pro.php</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.21062/mft.2024.025" target="_blank" >10.21062/mft.2024.025</a>

Result language
angličtina
Original language name
Microstructure and Properties of Natural Alloy Prepared by Aluminothermic Reduction of Deep-Sea Nodules and Processed by Rapid Solidification
Original language description
This paper explores the investigation of a natural alloy processed using the rapid solidification technique. The study involves the reduction of manganese nodules through aluminothermy with a 20 wt. % excess of aluminum, followed by further processing of the resulting alloy using the melt-spinning process. The obtained melt-spun ribbons were subjected to a comprehensive analysis, including X-ray diffraction, scanning electron microscopy for microstructure observation, and EDS analysis for local chemical composition. The research unveiled that the rapidly solidified ribbons consist of several key phases, including beta-Mn, the Heusler phase Mn2FeSi, and an intermetallic phase (Cu,Mn)(3)(Al,Si). Importantly, the phase composition exhibited notable differences from that of the as-reduced alloy, with a reduced number of phases in the rapidly solidified ribbons. Notably, the phase composition remained stable even after annealing, demonstrating the robustness of the rapidly solidified material. Impressively, the material exhibited a remarkable hardness of approximately 800 HV 0.1, even after 100 hours of annealing at temperatures of 500 and 750 degrees C.
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/GA20-15217S" target="_blank" >GA20-15217S: New metallurgy for new „natural alloys“</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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