Metallurgical Processes at the Recycling of Aluminum Matrix Composites Via Direct Remelting

The features of metallurgical processes during the reprocessing of cast aluminum matrix composites of the Al–Si–B 4 C system by direct remelting were studied, and the degree of degradation of boron carbide particles was assessed. It is shown that as a result of interaction with an aluminum melt, a p...

Full description

Saved in:
Bibliographic Details
Published in:Metallurgist (New York) 2022-11, Vol.66 (7-8), p.989-1000
Main Authors: Prusov, E. S., Deev, V. B., Aborkin, A. V., Bokaryov, D. V., Kireev, A. V.
Format: Article
Language:English
Subjects:
Aluminum base alloys
Aluminum matrix composites
Boron carbide
Carbides
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cyclic loads
Degradation
Ingot casting
Materials Science
Melting
Metallic Materials
Metallurgy
Particulate composites
Reprocessing
Silicon
Thermal analysis
Waste management
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The features of metallurgical processes during the reprocessing of cast aluminum matrix composites of the Al–Si–B 4 C system by direct remelting were studied, and the degree of degradation of boron carbide particles was assessed. It is shown that as a result of interaction with an aluminum melt, a partial degradation of the reinforcing particles of boron carbide occurs with the formation of a new Al 3 BC phase in the form of an interfacial layer at the “matrix-particle” interfaces. During remelting of aluminum matrix composites, processes of redistribution of reinforcing particles are observed, accompanied by the destruction of agglomerates and improvement in the uniformity of distribution of particles in the bulk of the ingot. Multiple remelting leads to a fragmentation of the B 4 C reinforcing particles due to cyclic thermal loads, as well as to an increase in the percentage of porosity in the cast structure of the composite.
ISSN:0026-0894
1573-8892
DOI:10.1007/s11015-022-01411-1