Mechanical and Tribological Evaluation of Aluminum Metal Matrix Composite Pipes Fabricated by Gravity and Squeeze Stir Casting

2019 ◽  
Author(s):  
John Victor Christy ◽  
Abdel-Hamid I. Mourad ◽  
Ramanathan Arunachalam
Keyword(s):  
Metal Matrix ◽  
Erosive Wear ◽  
High Strength ◽  
Stir Casting ◽  
Industrial Applications ◽  
Matrix Composites ◽  
Aluminum Metal ◽  
Aluminum Metal Matrix Composite ◽  
Stirring Time ◽  
Composite Pipes

Abstract Aluminum metal matrix composites (MMC) find many industrial applications due to its high strength, zero corrosion, light weight and durability. In this work, gravity stir casting and squeeze stir casting were used to produce MMC solid rods of length 21cm. LM25 grade, from scrap alloy wheel of car, was used as matrix and Alumina was added as reinforcements to improve the composite properties. The performed microstructure analysis showed a greater percentage of porosity for gravity casted samples. Brinell hardness tests recorded 61 and 56 for squeeze and gravity stir casting respectively. The analysis was further strengthened by conducting tensile test, compression test, abrasion and erosive wear tests on the casted pipe sections. Optical Microscopy images of squeeze casted Al MMC’s shows a homogenous and a condensed LM25 matrix with alumina reinforcements even at high abrasion rates. Squeeze casted samples exhibited higher hardness, tensile and compression strengths and wear resistance by keeping stirring time, and stirring speed constant. Squeeze stir casting was suggested for the production of Aluminum MMC pipes.

scholarly journals Agricultural Waste as a Reinforcement Particulate for Aluminum Metal Matrix Composite (AMMCs): A Review

Fibers ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 33 ◽  
Author(s):  
Olufunmilayo O. Joseph ◽  
Kunle O. Babaremu
Keyword(s):  
Metal Matrix ◽  
Silicon Oxide ◽  
Agricultural Waste ◽  
Aloe Vera ◽  
Wear Property ◽  
Matrix Composites ◽  
Aluminum Metal ◽  
Aluminum Metal Matrix Composite ◽  
Chemical Content ◽  
Groundnut Shell

The desire to create sustainable development through research birthed this study. Over time, several authors have focused on the utilization of various chemical particulates as reinforcement constituents for metallic matric composites (MMCs) and aluminum metal matrix composites (AMMCs), which has thus far yielded positive outcomes for achieving the chemical, mechanical, microstructural, thermal, corrosion, and wear property improvement of various reinforced composites. However, this study focused on the search for the residing potentials in alternative materials that can be used as reinforcement particulates in place of the commonly used graphite, silicon nitride, titanium nitride, zirconium, and the likes. This study literarily revealed, via several reviews of literature, that the search for less expensive and easily procured materials with a silicon oxide and magnesium oxide chemical content instigated the utilization of materials from agricultural waste (agro-waste). According to the reviewed literature, some of the waste materials from agriculture that have been found to be useful for the particulate reinforcement of composites are groundnut shell, coconut shell, rice husk, breadfruit seed hull ash, aloe vera, bean pod ash, cow horn, and so on. It was discovered that processed agro-wastes in the form of powdery particulates have demonstrated great reinforcing abilities, as recorded in literature. In addition, they enhanced the mechanical properties of the various composites developed in comparison to the as-cast materials.

scholarly journals Aluminum Based Metal Matrix Composites Behavioral Studies with Different Reinforcements- A Review

2021 ◽  
Vol 9 (10) ◽  
pp. 1816-1822
Author(s):  
Paramjit Singh
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix ◽  
Density Ratio ◽  
High Strength ◽  
Stir Casting ◽  
Matrix Composites ◽  
Wear Properties ◽  
Mechanical And Tribological Properties ◽  
Behavioral Studies ◽  
Transportation Applications

Abstract: Aluminum alloy’s widely employed in transportation applications like: aerospace, aviation, marine and automobile sector due to their good mechanical properties, wear properties, corrosion behavior and high strength to density ratio. The current review article mainly highlights the effects of various reinforcements on mechanical and tribological properties of aluminum based metal matrix composite materials and focuses on the types of different reinforcements. Review revealed that, there is significant improvement in mechanical properties of AMMC’s with different reinforcements as compared to traditional base alloys. The reinforcements may be SiC, TiO2 , Al2O3 , fly ash, B4C, fiber, Zircon are incorporated in the stir casting or other methods. Keywords: AMMC, Reinforcements, Mechanical properties, Stir casting etc.

scholarly journals Fabrication of Silicon Carbide and Graphite Reinforced Aluminium MMC by Stir Casting and Characterization by Wear Test

2019 ◽  
Vol 8 (11) ◽  
pp. 4033-4038
Keyword(s):  
Silicon Carbide ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Hybrid Composites ◽  
Wear Test ◽  
Stir Casting ◽  
Equal Proportion ◽  
Matrix Composites ◽  
Aluminum Metal ◽  
Aluminum Metal Matrix Composites

Aluminum metal matrix composites with various reinforcements had pronounced prospective of meeting the criteria of recent engineering applications like aerospace, automobile, breakpads, sports, this is due to their enhancement of some mechanical properties by some addition of matrix in to decide material. The present study focuses on the fabrication of 6351 aluminum MMC hybrid composites reinforced with silicon carbide and graphite powder, followed by a wear test for characterization of the material. Although several methods are available for the fabrication of Al-Sic MMC, we have employed stir casting technique due to its simplicity and economical. In this work aluminum metal matrix composites reinforced with different weight fractions of 2%, 4%, 6% and 8% graphite and silicon carbide in equal proportion characteristics were compared with Al6351 alloy. It is found that the wear properties have been improved with increase in weight fraction of the reinforcements of silicon carbide and graphite in aluminum matrix

Experimental Investigation on Mechanical and Wear Properties of Al7075-B4C-TiO2 Composite

2018 ◽  
Vol 23 ◽  
pp. 17-23
Author(s):  
M. Ganesh ◽  
D. Srinivasan ◽  
Naren Vivekanandan
Keyword(s):  
Metal Matrix ◽  
High Strength ◽  
Stir Casting ◽  
Pure Aluminium ◽  
Light Weight ◽  
Matrix Composites ◽  
Wear Properties ◽  
Casting Technique ◽  
Double Shear ◽  
Al Matrix

Hybrid metal matrix composites are being widely investigated for use in light weight, high strength applications. In the present study, Aluminium alloy Al7075 was reinforced with B4C and TiO2at 4% and 2% weight fractions respectively. The powders of the reinforcements were ball milled for uniform distribution in the Al matrix, and later fabricated by stir casting technique primarily due to simplicity and economy of the method. The specimen were prepared as per ASTM standards and later subjected to hardness, double shear, wear and impact tests and the results were compared with that of pure aluminium specimen fabricated by the same method. The hardness, shear strength, impact strength of the composite were found to be higher than pure aluminium by 4.97%, 32.28% ands 6.41% respectively.

Effect of stir casting parameters and mono/hybrid reinforcements on aluminium metal matrix composite–A review

2021 ◽  
pp. 095440622110521
Author(s):  
Uday KN ◽  
Rajamurugan G
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Aluminum Matrix ◽  
Processing Parameters ◽  
Stir Casting ◽  
Cylinder Block ◽  
Matrix Composites ◽  
Casting Technique ◽  
Piston Cylinder ◽  
Stirring Time

Aluminum metal matrix composites are a new class of materials that have gathered more attention from many materialists. Especially, the automotive components like a piston, cylinder block, brake drum, etc., fabricated by different reinforcement, which has exposed better performance over conventional engineering materials. Aluminum composites are generally fabricated by stir casting technique due to simplicity in operation and adaptive to mass or job order production. The paper provides a background for the readers interested in the production of metal matrix composites through stir casting. Based on the literature assessment, the special attentions taken by the researchers to enhance the uniform distribution of particle to avoid agglomeration are discussed. The composite performances mainly depend on the aluminum matrix, particle size, the quantity of reinforcement, preheating temperature of reinforcement, and processing parameters such as stirring speed, stirring time, and wetting agents. The selection of two reinforcements and their suitable parameters for wetting are attaining interest by many researchers and maybe opted as future scope.

Sign in / Sign up

Export Citation Format

Share Document