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Fabrication of Aluminum - Cr3C2 Surface Composites through Friction Stir Processing and Analyzing its Microstructural and Mechanical Evolution

Satheeshkumar J., Jayaraman M., Priyadharshini G. S., Sathya Mukesh C. S.

Archives of Metallurgy and Materials

2019

Vol. 64, iss. 4

1527--1532

In this paper, aluminium alloy of grade ADC-12 was considered as a base metal and chromium carbide (Cr3C2) particles were reinforced through friction stir process. A detailed analysis of mechanical property and metallurgical characterization studies were performed to evaluate the surface composite. Remarkable changes were observed in the developed composite due to the mechanical force produced by the stir tool with an increase in hardness. The metallurgical investigation infers that the presence of silica in ADC-12 alloys has undergone mechanical fracture and long needle structure changed to reduced size. On the other hand, at higher tool rotational speed, the uniform distribution of hard particles was confirmed through SEM micrographs. Thus the modified surface composite has produced good mechanical property with high metallurgical qualities.