Possibilities of a Direct Synthesis of Aluminum Alloys with Elements from Deep-Sea Nodules

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43924565" target="_blank" >RIV/60461373:22310/22:43924565 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.mdpi.com/1996-1944/15/13/4467#metrics" target="_blank" >https://www.mdpi.com/1996-1944/15/13/4467#metrics</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma15134467" target="_blank" >10.3390/ma15134467</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Possibilities of a Direct Synthesis of Aluminum Alloys with Elements from Deep-Sea Nodules

Popis výsledku v původním jazyce

This work investigated the possibility of the direct preparation of aluminum alloys by aluminothermic reduction of deep-sea nodules with a high excess of aluminum. The process was found to be unable to obtain aluminum alloy, but an aluminum-rich manganese-based alloy was obtained instead, being composed of intermetallics. The alloy was characterized in the as-reduced state, as well as after crushing and sintering in the temperature range of 800-950 degrees C. The sample sintered at 900 degrees C was also heat-treated by annealing at 800 degrees C for 3 h and rapidly cooled. It was observed that with the increasing sintering temperature, the original matrix phase Al11Mn14 was transformed into a duplex matrix with a structure corresponding to Al11Mn14 and Al4Cu9, and this mixture was further transformed to the matrix with the structure corresponding to Al4Cu9. Furthermore, the mechanical properties and wear resistance of the samples were described. The highest microhardness was reached in the sample, which was annealed after sintering. Sintered samples reached a lower wear rate because of the fragmentation of brittle intermetallics during crushing.

Název v anglickém jazyce

Possibilities of a Direct Synthesis of Aluminum Alloys with Elements from Deep-Sea Nodules

Popis výsledku anglicky

This work investigated the possibility of the direct preparation of aluminum alloys by aluminothermic reduction of deep-sea nodules with a high excess of aluminum. The process was found to be unable to obtain aluminum alloy, but an aluminum-rich manganese-based alloy was obtained instead, being composed of intermetallics. The alloy was characterized in the as-reduced state, as well as after crushing and sintering in the temperature range of 800-950 degrees C. The sample sintered at 900 degrees C was also heat-treated by annealing at 800 degrees C for 3 h and rapidly cooled. It was observed that with the increasing sintering temperature, the original matrix phase Al11Mn14 was transformed into a duplex matrix with a structure corresponding to Al11Mn14 and Al4Cu9, and this mixture was further transformed to the matrix with the structure corresponding to Al4Cu9. Furthermore, the mechanical properties and wear resistance of the samples were described. The highest microhardness was reached in the sample, which was annealed after sintering. Sintered samples reached a lower wear rate because of the fragmentation of brittle intermetallics during crushing.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA20-15217S" target="_blank" >GA20-15217S: Nové metalurgické postupy pro nové „přírodní slitiny“</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Materials

ISSN

1996-1944

e-ISSN

—

Svazek periodika

15

Číslo periodika v rámci svazku

13

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

21

Strana od-do

nestrankovano

Kód UT WoS článku

000824332200001

EID výsledku v databázi Scopus

—