Comparative study of powder mixed EDM and rotary tool EDM performance during machining of Al-SiC metal matrix composites

Author(s):  
Umesh Kumar Vishwakarma ◽  
Akshay Dvivedi ◽  
Pradeep Kumar
2014 ◽  
Vol 984-985 ◽  
pp. 384-389 ◽  
Author(s):  
L. Poovazhagan ◽  
K. Kalaichelvan ◽  
V.R. Balaji ◽  
P. Ganesh ◽  
A. Kali Avudaiappan

The major problem associated with the fabrication of cast metal matrix composites is the agglomeration tendency of the particles in the metal matrix. The agglomeration of the particles in the metal matrix greatly reduces the mechanical properties of the fabricated composite materials. In this work, to reduce the agglomeration tendency of SiC particles in Al matrix, different weight percentages of SiC particles reinforced Al composites were fabricated by the conventional stir casting and the ultrasonic cavitation assisted casting routes. Results indicate that in both the methods, particle distribution was uniform upto certain weight percentage after that agglomeration of particles were observed. The mechanical properties of the as-cast composites were superior to that of the as-cast alloys. Composites fabricated by the ultrasonic cavitation method showed slightly better mechanical properties than the composites fabricated by the conventional stir casting route. From the consolidated results it was also observed that 10 weight % of SiCpreinforced composite fabricated by the ultrasonic cavitation method yields the better mechanical properties when compared to the other composites fabricated in this study. Keywords: Metal Matrix Composites, Stir Casting, Ultrasonic Cavitation, Mechanical Properties, Microstructure, Comparative Study


1996 ◽  
Vol 79 (2) ◽  
pp. 179-187 ◽  
Author(s):  
S. Saragas ◽  
S. K. Kourkoulis ◽  
N. P. Andrianopoulos

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