Microstructural, mechanical and wear behavior of A390/graphite and A390/Al2O3 surface composites fabricated using FSP

A390/graphite and A390/Al2O3 surface composite (SC) layers were fabricated using friction stir processing (FSP). The effect of tool rotational and traverse speeds on the microstructural, mechanical and wear properties of the surface layers was studied. Increasing the tool rotational speed increased...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2011, Vol.528 (18), p.5741-5746
Main Authors: RAAFT, M, MAHMOUD, T. S, ZAKARIA, H. M, KHALIFA, T. A
Format: Article
Language:English
Subjects:
Aluminum base alloys
Aluminum oxide
Applied sciences
Contact of materials. Friction. Wear
Dispersion hardening metals
Exact sciences and technology
Graphite
Hardness
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Microstructure
Powder metallurgy. Composite materials
Production techniques
Rotational
Tool wear
Wear
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Summary:A390/graphite and A390/Al2O3 surface composite (SC) layers were fabricated using friction stir processing (FSP). The effect of tool rotational and traverse speeds on the microstructural, mechanical and wear properties of the surface layers was studied. Increasing the tool rotational speed increased the hardness of the composite layers. The traverse speed had a less significant influence on the hardness of the composite layer than the tool rotational speed. The A390/Al2O3 surface composites exhibited higher hardness than the A390/graphite surface composites. The surface composites exhibited better wear resistance than the matrix alloy. The A390/Al2O3 surface composites exhibited lower wear rates than the A390/graphite surface composites. Increasing the tool rotational speed reduced the wear rate of both A390/Al2O3 and A390/graphite surface composites.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2011.03.097