Experimental investigation on thermal behavior of fly ash reinforced aluminium alloy (Al6061) hybrid composite

S. Kushnoore; V. Atgur; P. K. C. Kanagalpula; N. Kamitkar; P. Shetty

doi:10.15282/jmes.13.3.2019.23.0449

Authors

S. Kushnoore Department of Mechanical Engineering Koneru Lakshmaiah Educational Foundation, Guntur, Andhra Pradesh, India, Phone: +918123617419
V. Atgur Department of Mechanical Engineering Koneru Lakshmaiah Educational Foundation, Guntur, Andhra Pradesh, India, Phone: +918123617419
P. K. C. Kanagalpula Department of Mechanical Engineering, Thapar Institute of Engineering & Technology Patiala, Punjab, India
N. Kamitkar Department of Mechanical Engineering Koneru Lakshmaiah Educational Foundation, Guntur, Andhra Pradesh, India, Phone: +918123617419
P. Shetty Department of Mechanical Engineering, AITM Bhatkal, Karnataka, India

DOI:

https://doi.org/10.15282/jmes.13.3.2019.23.0449

Keywords:

Metal matrix composites, Al6061 and Fly ash, Microstructure, Thermal Behavior

Abstract

In the present study, the thermal behavior of pure Al6061 and fly ash reinforced Al6061 with varying particulate sizes were investigated for the first time. Metal matrix syntactic foams of ceramic fly ash (4 – 16 wt. %) embedded in aluminum (Al6061) matrix have been fabricated by using stir casting technique with different fly ash particulate sizes of size below 50µm and 53µm-100µm, respectively. The microstructural characteristics were studied by using scanning electron microscopy (SEM). It has been observed that there is a uniform distribution of lower particulate size fly ash as compared to higher particulate size in the aluminium matrix respectively. For all the cases, the accumulation of fly ash in Al6061 decreases the thermal conductivity and increases the specific heat carrying capacity of a hybrid composite. Increase in weight percentage of fly ash in Al6061 decreases thermal conductivity and thermal diffusivity respectively.

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