Towards a better understanding of the interaction of Fe66Cr10Nb5B19 metallic glass with aluminum: growth of intermetallics and formation of Kirkendall porosity during sintering

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dc.contributor.authorDudina, Dina V.
dc.contributor.authorKvashnin, Vyacheslav I.
dc.contributor.authorMatvienko, Alexander A.
dc.contributor.authorSidelnikov, Anatoly A.
dc.contributor.authorGavrilov, Alexander I.
dc.contributor.authorUkhina, Arina V.
dc.contributor.authorMoreira Jorge, Alberto
dc.contributor.authorGeorgarakis, Konstantinos
dc.date.accessioned2023-01-24T15:14:10Z
dc.date.available2023-01-24T15:14:10Z
dc.date.issued2023-01-15
dc.description.abstractMetallic-glass-reinforced metal matrix composites are a novel class of composite materials, in which particles of alloys with an amorphous structure play the role of reinforcement. During the fabrication of these composites, a crystalline metal is in contact with a multicomponent alloy of an amorphous structure. In the present work, the morphological features of the reaction products formed upon the interaction of Fe66Cr10Nb5B19 metallic glass particles with aluminum were studied. The composites were processed via spark plasma sintering (SPS), hot pressing or a combination of SPS and furnace annealing. The reaction products in composites with different concentrations of the metallic glass and different transformation degrees were examined. The products of the interaction of the Fe66Cr10Nb5B19 metallic glass with Al were observed as dense layers covering the residual alloy cores, needles of FeAl3 protruding from the dense shells as well as needles and platelets of FeAl3 distributed in the residual Al matrix. The possible role of the liquid phase in the structure formation of the reaction products is discussed. The formation of needle- and platelet-shaped particles presumably occurred via crystallization from the Al-Fe-based melt, which formed locally due to the occurrence of the exothermic reactions between aluminum and iron. At the same time, aluminum atoms diffused into the solid Fe-based alloy particles, forming an intermetallic layer, which could grow until the alloy was fully transformed. When aluminum melted throughout the volume of the composite during heating of the sample above 660 °C, a similar microstructure developed. In both Al–Fe66Cr10Nb5B19 and Al–Fe systems, upon the reactive transformation, pores persistently formed in locations occupied by aluminum owing to the occurrence of the Kirkendall effect.en_UK
dc.identifier.citationDudina DV, Kvashnin VI, Matvienko AA, et al., (2023) Towards a better understanding of the interaction of Fe66Cr10Nb5B19 metallic glass with aluminum: growth of intermetallics and formation of Kirkendall porosity during sintering, Chemistry, Volume 5, Issue 1, January 2023, pp. 138-150en_UK
dc.identifier.issn2624-8549
dc.identifier.urihttps://doi.org/10.3390/chemistry5010011
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/19008
dc.language.isoenen_UK
dc.publisherMDPIen_UK
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectmetallic glassen_UK
dc.subjectinterfaceen_UK
dc.subjectaluminumen_UK
dc.subjectintermetallicsen_UK
dc.subjectmorphologyen_UK
dc.subjectdiffusionen_UK
dc.titleTowards a better understanding of the interaction of Fe66Cr10Nb5B19 metallic glass with aluminum: growth of intermetallics and formation of Kirkendall porosity during sinteringen_UK
dc.typeArticleen_UK

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