The effect of palm kernel shell ash reinforcement on microstructure and mechanical properties of Al-Mg-Si metal-matrix composites

2021 ◽  
pp. 095440622110145
Author(s):  
EO Oyedeji ◽  
M Dauda ◽  
SA Yaro ◽  
M Abdulwahab
Keyword(s):  
Mechanical Properties ◽  
Matrix Material ◽  
Palm Kernel ◽  
Modulus Of Rupture ◽  
Matrix Composites ◽  
Palm Kernel Shell ◽  
Sem Image ◽  
Microstructure And Mechanical Properties ◽  
Lightweight Metals ◽  
High Degree

Aluminium is one of the lightweight materials that have a major contribution in numerous applications globally and it is also considered less expensive compared with other lightweight metals such as titanium and magnesium. As a result of some engineering applications’ requirements of better hardness and strength of material with lesser weight, researchers’ attention is drawn to the enhancement of the mechanical properties of accessible aluminium alloys. This study was conducted to study the microstructure and mechanical properties of a composite Al-Mg-Si matrix with varying weight percentages (0, 4, 6 and 8 wt. %) of palm kernel ash (PKSA) reinforcement, which were denoted correspondingly as C1–C4. The PKSA was obtained at a calcination temperature of 850 °C, XRD and XRF analyses were conducted to characterize it. The formulated samples were then ball-milled using two roll mills for about 60 hours to achieve a near homogeneity of the composites. The SEM image of the reinforced samples (C2 and C3) revealed that there were many networks of coalesced or necked particles while individual particles are hardly found, which is an indication of a high degree of densification ratio percentage of PKSA. The results also showed that there was an increase in hardness (44.4%), modulus of rupture (37.4%) and impact strength (252.03%) of Al-Mg-Si matrix composites (C3) in comparison with the unreinforced matrix material.

scholarly journals Characterization of Al-Mg-Si Alloy Reinforced with Optimum Palm Kernel Shell Ash (PKSA) Particle and its Consequence on the Dynamic Properties for Aerospace Application

2021 ◽  
Author(s):  
Oyewusi Elijah Oyedeji ◽  
Muhammed Dauda ◽  
Shehu Aliyu Yaro ◽  
Malik Abdulwahab
Keyword(s):  
Dynamic Properties ◽  
Loss Modulus ◽  
Palm Kernel ◽  
Modulus Of Rupture ◽  
Population Increase ◽  
Damping Factor ◽  
Matrix Composites ◽  
Palm Kernel Shell ◽  
Aerospace Applications

Abstract Nowadays, the demand for naturally and locally sourced materials for usage in automobile and aerospace have been on the increase due to high usage and population increase. In this view, this research is focused on investigating aluminium metal matrix composite materials with the aim of studying the optimum composition effect of Al-Mg-Si alloy reinforced with Palm Kernel Shell Ash (PKSA) particle on static and dynamic properties. Powder methodology was used to manufacture the developed composites. The SEM result showed that the recrystallization during ball milling of the mixture powders characterized the accumulation of higher dislocation density and the presence of harder phases in the PKSA which contributed to their improved thermal properties. Furthermore, the modulus of rupture of the developed Al-Mg-Si-PKSA matrix composites was effectively increased, and it can be drawn that sample C4 (6:94 wt%) has optimized properties. In this study, the storage modulus (E’), loss modulus (E'), damping factor (tan δ) were determined based on the Dynamic Mechanical Thermal Analysis (DMTA) of the developed composites. It was established that the glass transition temperature (Tg) increased with frequency and amplitude. The result of this research also revealed the optimum percentage composition of 6 wt% PKSA on Al-Mg-Si powder is suitable for research aerospace applications.

Effect of TiC Particulates on the Microstructure and Mechanical Properties of Aluminium-Based Metal Matrix Composite

2014 ◽  
Vol 903 ◽  
pp. 145-150 ◽  
Author(s):  
Sulaiman Suraya ◽  
Shamsuddin Sulaiman ◽  
Ali Munira ◽  
Abdul Aziz Fazilah
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix ◽  
Matrix Material ◽  
Matrix Composites ◽  
Alloy Matrix ◽  
Casting Technique ◽  
Silicon Alloy ◽  
Microstructure And Mechanical Properties ◽  
The Matrix ◽  
Tic Particulates

In this research, metal-matrix composites (MMCs) of aluminium-11.8% silicon alloy matrix reinforced with titanium carbides particulates were fabricated by the casting technique. Aluminium-11.8% silicon alloy is selected as the matrix material and titanium carbide as particulates are mixed in different weight percentages, 5%, 10%, 15% and 20%wt. The cylinder composite castings are made by pouring the composite mixture in copper permanent-molds. The microstructure and mechanical properties of these composite materials were investigated. The effects of reinforced materials on weight percentages addition of particulate on the particulate distribution in aluminium-11.8% silicon alloy composites and SEM observation of the fracture surfaces of tensile tested specimens were deliberate. Moreover, cylinder castings without particulate addition are made and compared with the result based on the properties and microstructural features. It is found that the microstructure and mechanical properties of composites significantly improved by the use of particle reinforced into aluminium alloy.

Microstructure and mechanical properties of novel CrCoNi–Al2O3P medium entropy alloy-matrix composites

2021 ◽  
Vol 130 ◽  
pp. 107057
Author(s):  
A.W. Zhao ◽  
X. Luo ◽  
Z.L. Ye ◽  
X. Guo ◽  
B. Huang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Matrix Composites ◽  
Alloy Matrix ◽  
Microstructure And Mechanical Properties

The Effect of Mixing Coal with Biomass in Solid Fuel Briquettes

2013 ◽  
Vol 856 ◽  
pp. 338-342 ◽  
Author(s):  
Chin Yee Sing ◽  
Mohd Shiraz Aris
Keyword(s):  
Mechanical Properties ◽  
Carbon Dioxide ◽  
Power Plants ◽  
Carbon Dioxide Emission ◽  
Palm Kernel ◽  
Value Added ◽  
Calorific Value ◽  
Fuel Properties ◽  
Biomass Fuel ◽  
Palm Kernel Shell

Burning fossil fuel like coal in power plants released carbon dioxide that had been absorbed millions of years ago. Unfortunately, excessive carbon dioxide emission had led to global warming. Malaysia, as one of the major exporters of palm oil, has abundant oil palm mill residues that could be converted into value-added product like biomass fuel briquettes. Fuel briquette with palm kernel shell and palm mesocarp fibre as its main ingredients showed satisfactory fuel characteristics and mechanical properties as a pure biomass fuel briquette. The effects of adding some coal of higher calorific value to the satisfactory biomass fuel briquette were focused in this study. Various coal-biomass fuel blends were used, ranging from 0wt% coal to 50wt% coal. The fuel properties and mechanical properties of pure biomass briquette and briquettes with different amount of coal added were compared experimentally. From the fuel properties tests, it was found that as the coal content in the briquette was increased, the carbon content and calorific value increased. Mechanical property tests on the fuel briquettes showed a mixture of results, with some favored higher portion of coal in the briquette for better handling, transport and storage properties while some favored greater amount of biomass.

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