Effect of Heat Treatment on the Hardness and Electrical Connectivity of an Aluminum Composite Reinforced with Al2O3 Nanoparticles

The effect of heat treatment modes on the microstructure, microhardness and electrical conductivity of an aluminum metal matrix composite (MMC) reinforced with Al 2 O 3 nanoparticles in an amount of 2.5 wt.% is studied. The MMC is treated by quenching from 510, 530 or 550°C and subsequent artificial...

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Veröffentlicht in:	Metal science and heat treatment 2023-11, Vol.65 (7-8), p.450-453
Hauptverfasser:	Rumi, Md Jalal Uddin, Rahman, Muhammad Muzibur
Format:	Artikel
Sprache:	eng
Schlagworte:	Aging (artificial) Aluminum matrix composites Aluminum oxide Characterization and Evaluation of Materials Chemistry and Materials Science Classical Mechanics Diamond pyramid hardness Electrical resistivity Engineering Thermodynamics Heat and Mass Transfer Heat treatment Materials Science Metal matrix composites Metallic Materials Nanoparticles Quenching
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Zusammenfassung:	The effect of heat treatment modes on the microstructure, microhardness and electrical conductivity of an aluminum metal matrix composite (MMC) reinforced with Al 2 O 3 nanoparticles in an amount of 2.5 wt.% is studied. The MMC is treated by quenching from 510, 530 or 550°C and subsequent artificial aging at 140, 160, 180, 200 or 220°C. The cast composite has a Vickers microhardness of 36 HV and an electrical conductivity of 45% IACS. The heat treatment raises the hardness and the conductivity of the composite. Quenching from 530°C and aging at 200°C produce the highest microhardness (46 HV ); quenching from 530°C and aging at 180°C produce the highest conductivity (50% IACS).
ISSN:	0026-0673 1573-8973
DOI:	10.1007/s11041-023-00953-8