Influence of heat treatment and reinforcements on tensile characteristics of aluminium AA 5083/silicon carbide/fly ash composites

Nagaraja, Santhosh and Kodandappa, Ramesha and Ansari, Khalid and Kuruniyan, Mohamed Saheer and Afzal, Asif and Kaladgi, Abdul Razak and Aslfattahi, Navid and Saleel, C. Ahamed and Gowda, Ashwin C. and Bindiganavile Anand, Praveena (2021) Influence of heat treatment and reinforcements on tensile characteristics of aluminium AA 5083/silicon carbide/fly ash composites. Materials, 14 (18). ISSN 1996-1944, DOI

Full text not available from this repository.


The effect of reinforcements and thermal exposure on the tensile properties of aluminium AA 5083-silicon carbide (SiC)-fly ash composites were studied in the present work. The specimens were fabricated with varying wt.% of fly ash and silicon carbide and subjected to T6 thermal cycle conditions to enhance the properties through ``precipitation hardening''. The analyses of the microstructure and the elemental distribution were carried out using scanning electron microscopic (SEM) images and energy dispersive spectroscopy (EDS). The composite specimens thus subjected to thermal treatment exhibit uniform distribution of the reinforcements, and the energy dispersive spectrum exhibit the presence of Al, Si, Mg, O elements, along with the traces of few other elements. The effects of reinforcements and heat treatment on the tensile properties were investigated through a set of scientifically designed experimental trials. From the investigations, it is observed that the tensile and yield strength increases up to 160 degrees C, beyond which there is a slight reduction in the tensile and yield strength with an increase in temperature (i.e., 200 degrees C). Additionally, the % elongation of the composites decreases substantially with the inclusion of the reinforcements and thermal exposure, leading to an increase in stiffness and elastic modulus of the specimens. The improvement in the strength and elastic modulus of the composites is attributed to a number of factors, i.e., the diffusion mechanism, composition of the reinforcements, heat treatment temperatures, and grain refinement. Further, the optimisation studies and ANN modelling validated the experimental outcomes and provided the training models for the test data with the correlation coefficients for interpolating the results for different sets of parameters, thereby facilitating the fabrication of hybrid composite components for various automotive and aerospace applications.

Item Type: Article
Funders: Deanship of Scientific Research at King Khalid University, Saudi Arabia [RGP 2/191/42]
Uncontrolled Keywords: Heat treatment; AA 5083 alloy; Silicon carbide; Fly ash; Composites; Tensile; Characteristics; sandblasting; composite; denture base
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TN Mining engineering. Metallurgy
Divisions: Faculty of Engineering > Department of Mechanical Engineering
Depositing User: Ms Zaharah Ramly
Date Deposited: 09 Jun 2022 04:48
Last Modified: 09 Jun 2022 04:48

Actions (login required)

View Item View Item