Experimental investigation of AA2014 alloy with reinforcement of fly ash and SiC hybrid composites by stir casting method

2020 ◽  
Vol 33 ◽  
pp. 3342-3346
Author(s):  
P. Gurusamy ◽  
S. Tamilselvan ◽  
S. Saravanan ◽  
D. Nantha Gopal
2017 ◽  
Vol 25 (3) ◽  
pp. 209-214 ◽  
Author(s):  
G. Venkatachalam ◽  
A. Kumaravel

This paper presents the characterization of A356 composite reinforced with fly ash and basalt ash produced by stir casting method. Aluminium metal matrix composites (AMC) are used in wide variety of applications such as structural, aerospace, marine, automotive etc. Stir casting is cost effective manufacturing process and it is useful to enhance the attractive properties of AMCs. Three sets of hybrid AMC are prepared by varying the weight fraction of the reinforcements (3% basalt + 7% fly ash, 5% basalt + 5% fly, 7% basalt + 3% fly ash). The effect of reinforcements on the mechanical properties of the hybrid composites such as hardness, tensile, compressive and impact strength were studied. The obtained results reveal that tensile, compressive and impact strength was increased when weight fraction of fly ash increased, whereas the hardness increases when weight fraction of the basalt ash increased. Microscopic study reveals the dispersion of the reinforcements in the matrix.


2018 ◽  
Vol 5 (14) ◽  
pp. 28413-28419 ◽  
Author(s):  
Yashpal ◽  
Narender Panwar ◽  
M.M. Goud ◽  
Suman Kant

Author(s):  
Srinivasa Prasad Katrenipadu ◽  
Swami Naidu Gurugubelli

Nano-fly ash particles reinforced Al-10wt%Mg alloy matrix composites produced by stir-casting method were tested for their ageing response. Ageing studies were performed at 160 °C, 200 °C and 240 °C temperatures and a maximum peak hardness of 142 VHN was observed during ageing at 200 °C for the composite with 10 wt% nano fly ash reinforcement. This is due to rapid nucleation and growth of βI particles at this temperature. Experiments were designed for different compositions and different ageing temperatures on the basis of the Design of Experiments technique. The factorial design is considered to improve the reliability of results and to reduce the size of experimentation without loss of accuracy. A model to predict the ageing behaviour of the composites was developed with the terms of 5, 10 and 15% weight fraction of fly ash at 160 °C, 200 °C and 240 °C ageing temperatures. The developed regression model was validated by statistical software MINITAB-R17.1.0. It was found that the developed regression model could be effectively used to predict the ageing behavior at 95% confidence level.


2014 ◽  
Vol 97 ◽  
pp. 703-712 ◽  
Author(s):  
K. Umanath ◽  
S.T. Selvamani ◽  
K. PalanikumarK ◽  
D. Niranjanavarma

2016 ◽  
Vol 61 (2) ◽  
pp. 651-656 ◽  
Author(s):  
A. J. Dolata ◽  
M. Dyzia ◽  
S. Boczkal

Abstract The aim of the work was to perform adequate selection of the phase composition of the composite designated for permanent - mould casting air compressor pistons. The hybrid composites based on AlSi7Mg matrix alloy reinforced with mixture of silicon carbide (SiC) and glassy carbon (Cg) particles were fabricated by the stir casting method. It has been shown that the proper selection of chemical composition of matrix alloy and its modification by used magnesium and strontium additions gives possibility to obtain both the advantageous casting properties of composite suspensions as well as good bonding between particles reinforcements and matrix.


2015 ◽  
Vol 34 (5) ◽  
pp. 586-592 ◽  
Author(s):  
S. Thirumalai Kumaran ◽  
M. Uthayakumar ◽  
Adam Slota ◽  
S. Aravindan ◽  
Jerzy Zajac

2014 ◽  
Vol 592-594 ◽  
pp. 484-488 ◽  
Author(s):  
Pardeep Sharma ◽  
Dinesh Khanduja ◽  
Satpal Sharma

Aluminium matrix composites (AMCs) having more than one reinforcement (hybrid AMCs) found enlarged use due to better strength, high thermal stability and wear resistance properties and can be a substitute for single reinforced AMCs .The effect of varying ball milled (BM) B4C/Si3N4 particles on the microstructure of as cast AA6082 and mechanical properties of AA6082 alloy hybrid composites produced by combined ball milling and conventional stir casting method have been reported. The combined reinforcement of BM B4C/Si3N4 particles were varied from 0-9 % in a step of 3. The wettability of B4C/Si3N4 into the aluminium melt has been increased by ball milling the boron carbide with silicon nitride powder, so that combined reinforcement of B4C/Si3N4 neither float nor sink in the aluminium melt. The investigated result showed that addition of combined reinforcement of BM B4C/Si3N4 increased Hardness and Ultimate tensile strength at the cost of reduction in percentage elongation.


2016 ◽  
Vol 61 (2) ◽  
pp. 705-708 ◽  
Author(s):  
A. J. Dolata ◽  
M. Dyzia ◽  
L. Jaworska ◽  
P. Putyra

Abstract The main purpose of the investigations was to develop the phase composition of the composite assuming that the component selection criterion will be the formability of piston work surfaces during the machining. Wear resistance under the friction conditions was assumed as the additional parameter for the assessment of composite material. In the study were used AlSi7Mg/SiC+Cg and AlSi7Mg/SiC+GR hybrid composites prepared by the stir casting method.


2021 ◽  
Vol 2070 (1) ◽  
pp. 012177
Author(s):  
A K Dhar ◽  
G Sutradhar

Abstract Fly ash has received a lot of attention as a possible support for aluminium alloy composites (AMCs) to improve characteristics while lowering production costs. Al alloy MMC was made with different amounts of fly ash (2, 5, and 8%). The semi-solid state mould was gradually filled with reinforced particles. The optical microscope investigation of the microstructure of AMCs reveals homogenous fly ash dispensation. With the increase in fly ash particulate, the microstructure with refined composition displays reducing Si-needle structure and extending space of eutectic-Al grid space. While hardness increases by 88 percent, tensile strength increases by 57 percent and yield strength by 17 % of the AMCs with the increment of fly ash. The addition of fly ash particles improved the AMCs’ physical and mechanical qualities. As a result, it leads to upgrade the energy utilisation.


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