NDLI: FABRICATION AND STUDY ON MECHANICAL AND TRIBOLOGICAL PROPERTIES OF NANO Al 2 O 3 AND MICRO B 4 C PARTICLES-REINFORCED A 356

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FABRICATION AND STUDY ON MECHANICAL AND TRIBOLOGICAL PROPERTIES OF NANO Al 2 O 3 AND MICRO B 4 C PARTICLES-REINFORCED A 356

Content Provider	Semantic Scholar
Author	Sukesha Ranjan, Rajeev Nagesh, G. Sekar, Karuppanan
Copyright Year	2014
Abstract	Hybrid composites are advanced class of materials used for light weight application and having higher strength and stiffness compared to other conventional materials. The automobile and aerospace industries relenting passion to enhance the performance of commercial and military applications is constantly driving the development of improved high performance structural materials.In the present study,Aluminium alloy A356 matrix reinforced with nano Al2O3 [(APS 50nm,1 wt.%)] and micro B4C [(APS 100μm)0.5, 1, and 1.5 wt.%] were fabricated by combination of stir and squeeze casting method. The fabrication is performed at a stirring speed of 300 rpm and 60 MPa pressure With Stirring time as 10 minutes. The microstructure study such as optical microscope and SEM analysis revealed that uniform distribution Al2O3 and B4C particles without agglomeration. The obtained composites were subjected to T6 heat treatment. The mechanical properties such as Hardness Test, Compression Test and Density of both composites (Heat treated and non-heat treated) were investigated. The results shows that the presence of nano-Al2O3 and micro B4C particles with increase in wt.% in aluminium matrix led to significant improvement in the mechanical properties of the composites compared to aluminium alloy and A356/Al2O3 composites. T6 heat treated composites have good mechanical properties compared to without heat treated composites. This enhancement in the mechanical properties due to refinement of grain size and formation of globular silicon particles. The effects of factors and interactions on the weight loss values of both composite and counter materials were studied. Worn surfaces were studied using scanning electron microscope. The densities of composites were increased and porosity is decreased due to squeezing effect.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.iitg.ac.in/aimtdr2014/PROCEEDINGS/papers/203.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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