Tribological Behaviour of Al6061–2SiC-xGr Hybrid Metal Matrix Nanocomposites Fabricated through Ultrasonically Assisted Stir Casting Technique

Silicon ◽  
2019 ◽  
Vol 11 (6) ◽  
pp. 2853-2871 ◽  
Author(s):  
A. Prasad Reddy ◽  
P. Vamsi Krishna ◽  
R. N. Rao
Keyword(s):  
Metal Matrix ◽  
Stir Casting ◽  
Tribological Behaviour ◽  
Metal Matrix Nanocomposites ◽  
Casting Technique ◽  
Hybrid Metal Matrix Nanocomposites ◽  
Matrix Nanocomposites

Characterization and mechanical response of novel Al-(Mg–TiFe–SiC) metal matrix composites developed by stir casting technique

2019 ◽  
Vol 53 (28-30) ◽  
pp. 3929-3938 ◽  
Author(s):  
Samuel O Akinwamide ◽  
Serge M Lemika ◽  
Babatunde A Obadele ◽  
Ojo J Akinribide ◽  
Bolanle T Abe ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Silicon Carbide ◽  
Metal Matrix ◽  
Mechanical Response ◽  
Frictional Coefficient ◽  
Stir Casting ◽  
Matrix Composites ◽  
Tribological Behaviour ◽  
Casting Technique ◽  
Electron Microscopes

This study was conducted to investigate the synthesis, characterization and mechanical properties of aluminium reinforced with ferrotitanium and silicon carbide via stir casting technique. Microstructures of as-cast samples were analysed using optical and scanning electron microscopes equipped with energy-dispersive X-ray spectroscopy. The mechanical properties in terms of hardness, tensile, tribological behaviour and fracture were assessed. Results showed that the homogeneous dispersion of reinforcement was within the metal matrix composite. Tribological study revealed a decrease in frictional coefficient of the composites with lowest frictional coefficient observed in composite with addition of silicon carbide as reinforcement. Morphology of fractured surface displayed a reduction in the size of dimples formed in reinforced aluminium composites when compared with larger dimple sizes observed in as-cast aluminium alloy.

Fabrication of Metal Matrix Nanocomposites

2009 ◽  
Vol 79-82 ◽  
pp. 425-428 ◽  
Author(s):  
N.K. Tolochko ◽  
A.A. Andrushevich ◽  
Yu.A. Shienok
Keyword(s):  
Partial Melting ◽  
Metal Matrix ◽  
Model Systems ◽  
Homogeneous Structure ◽  
Metal Matrix Nanocomposites ◽  
Casting Technique ◽  
Cast Composites ◽  
Matrix Nanocomposites ◽  
Semisolid Casting

Novel semisolid casting technique allowing producing the cast composites with highly homogeneous structure is suggested. In according with this technique specially prepared metal bil-lets containing reinforcing nanoparticles are subjected to partial melting and compacting and fol-lowing solidifying. Some model systems were used in order to demonstrate the potential possibili-ties of this technique in principle.

Challenges in Manufacturing Aluminium Based Metal Matrix Nanocomposites via Stir Casting Route

2012 ◽  
Vol 736 ◽  
pp. 72-80 ◽  
Author(s):  
Subhranshu Chatterjee ◽  
Amitava Basu Mallick
Keyword(s):  
Metal Matrix ◽  
Settling Velocity ◽  
Strengthening Mechanism ◽  
Stir Casting ◽  
Theoretical Concepts ◽  
Metal Matrix Nanocomposites ◽  
Theoretical Predictions ◽  
Matrix Nanocomposites ◽  
Grain Refinement Strengthening

The influence of material processing conditions for preparing aluminium based metal matrix nanocomposites through stir casting route is reviewed. The role of particle size with respect to Brownian motion, Stokes settling velocity and strengthening mechanism is assessed from theoretical understandings. Variation of microstructural features and mechanical properties of the nanocomposites are predicted from theoretical concepts and related mathematical models. Experiments conducted to validate the theoretical predictions show that both Orowan and grain refinement strengthening mechanisms remain operative which is the key to the improved strength property of the nanocomposites.

Exploration of Properties of Al 6060/CNT Metal Matrix Nanocomposites

2021 ◽  
Vol 903 ◽  
pp. 133-140
Author(s):  
B. Madhusudhana Reddy ◽  
S.P. Akbar Hussain ◽  
K. Raja Sekhar ◽  
P. Anand
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix ◽  
Casting Process ◽  
Stir Casting ◽  
Metal Matrix Nanocomposites ◽  
Weight Percentage ◽  
Mechanical Parts ◽  
Manufacturing Sectors ◽  
Experimental Values ◽  
Matrix Nanocomposites

Nowadays the use of composites in all most all manufacturing sectors is developing rapidly and is likely to increase more rapidly shortly. Aluminum alloy is playing a greater role in all engineering fields. Modern mechanical parts require superior properties, the material available in pure form do not have the required mechanical properties such as strength, hardness, corrosion resistance, etc. A Composite is formed by two or more physically and chemically distinct substances and which is fabricated to enhance the distinctiveness of base metal. The Present work has focused on properties of Carbon nanoTubes (CNTs) reinforced aluminum metal matrix Al 6060; Nanocomposites. These Nanocomposites are fabricated by using the stir casting method by varying the CNT reinforcement with a multi-walled size 10 to 15 nm weight percentage (0.3%, 0.7%, and 1%) of the Al 6060 matrix. To study its properties, the fabricated specimens are tested for mechanical properties. The properties of the Nanocomposites are found to be greatly influenced by the increase in weight percentage of reinforcement. With the mixing of different weight proportion reinforced particles by stir casting process properties of Tensile, Flexural, Impact, and hardness strength of composites are increased. The experimental values obtained from tests more useful in the development of Nanocomposites for different applications.

Recent Studies on the Fabrication of Magnesium Based Metal Matrix Nano-Composites by Using Ultrasonic Stir Casting Technique - A Review

2019 ◽  
Vol 969 ◽  
pp. 889-894
Author(s):  
Dinesh Kumar ◽  
Lalit Thakur
Keyword(s):  
Metal Matrix ◽  
Metallic Matrix ◽  
Stir Casting ◽  
Pure Metal ◽  
Wear Properties ◽  
Metal Matrix Nanocomposites ◽  
Casting Technique ◽  
Mechanical And Tribological Properties ◽  
Specific Strength ◽  
Uniform Dispersion

This paper presents the recent studies on the fabrication of magnesium based metal matrix nanocomposites (MMMC) by using ultrasonic assisted stir casting technique. The pure metal and alloys, due to their limited mechanical properties are not suitable for various engineering applications. It has been observed that the addition of suitable reinforcements into metallic matrix improves the specific strength, ultimate tensile strength, porosity and wear properties as compared to the conventional and monolithic engineering materials for aerospace and automotive applications. The effects of ultrasonic vibrations and the resulting uniform dispersion of reinforcements on the mechanical and tribological properties of magnesium based MMCs are specifically highlighted in this paper.

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