[Kovove materialy - Metallic materials]
    Fri - April 12, 2024 - 23:07 No. of hits : 1740513 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 61 (2023), Issue 3

Microstructural and mechanical behavior of unique aluminum matrix composites reinforced with pre-synthesized Al/Cu core-shell particulates
RASHID ALI, MUHIB ur REHMAN, OSAMA BIN ZIA, YASIR SAEED, ALI HASSAN, MUHAMMAD ASAD TARIQ, AQIB ZAHOOR, RUB NAWAZ SHAHID, NAEEM ul HAQ TARIQ, FAHAD ALI, OWAISUR REHMAN SHAH, HASAN BIN AWAIS
vol. 61 (2023), no. 3, pp. 189 - 197
DOI: 10.31577/km.2023.3.189

Abstract
In this study, Al matrix composites (AMCs) reinforced with Al/Cu core-shell particles were synthesized by hot pressing. The Al/Cu particulate reinforcements were pre-synthesized by galvanic replacement. The effect of the volume fraction of reinforcement on the microstructure and mechanical behavior of the composites was investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), micro-hardness and compression tests. The strength of the composite becomes 2.25 times the matrix by using 20 vol.% core-shell reinforcements containing only 6 vol.% Cu. Further, with increasing volume fraction of Al/Cu reinforcement, the degree of in-situ transformation of Cu into intermetallic also increases. Consequently, a specially tailored microstructure can be obtained by controlling the volume fraction of the reinforcement and its interfacial reaction with the matrix, which can improve the mechanical strength of composites without considerably compromising on fracture strain. The findings of this work provide stronger implications for the industry to fabricate viable engineering structures.

Key words
core-shell powder, galvanic replacement plating, interfacial reaction, hot-pressing, composite

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


Article abstracts updated: 2023-10-26 07:45      
Articles in press revised: 2024-04-11 09:16     
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