Fabrication and Mechanical Properties of Hybrid Aluminum Metal Matrix Composite by Using Stir Casting Process

2021 ◽  
Vol 106 ◽  
pp. 17-25
Author(s):  
S. Srikiran ◽  
Ch. Venkatarao ◽  
T. Raviteja
Keyword(s):  
Metal Matrix ◽  
Treatment Process ◽  
Casting Process ◽  
Stir Casting ◽  
Heat Treatment Process ◽  
Aluminum Metal ◽  
Aluminum Metal Matrix Composite ◽  
Before And After ◽  
Groundnut Shell ◽  
Groundnut Shell Ash

An attempt is made to study the influence of dispersion of Groundnut shell ash (GSA) on the hardness and density of Aluminum Metal Matrix Composite. It is an attempt to use agricultural waste in trying to enhance the mechanical properties of the already existing materials. The work deals with the use of groundnut shell ash, mixed with aluminum using stir casting process. . The composites with varying percentage of groundnut shell ash from 0% to 6% were prepared. The prepared specimens were tested before and after the heat treatment process in terms of its hardness using a Rockwell Hardness Tester. The present work attempts to compare the hardness and density of prepared composites as compared to the alloy. The comparison is carried out before and after the heat treatment process. The results indicate the increasing hardness value and reducing density of composites.

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.

Effects of Heat Treatment on the Mechanical and Tribological Properties of Aluminium (LM6) Reinforced with Iron Oxide (Fe2O3)

2020 ◽  
Vol 12 (3) ◽  
Author(s):  
J. Arun Prakash ◽  
P. Shanmughasundaram ◽  
M. Vemburaj ◽  
P. Gowtham
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Tensile Strength ◽  
Iron Oxide ◽  
Treatment Process ◽  
Casting Process ◽  
Stir Casting ◽  
Heat Treatment Process ◽  
Treatment Results ◽  
Mechanical And Tribological Properties

This work deals with the examination of the mechanical properties of Aluminium (LM6) reinforced with iron oxide (Fe2O3). Stir casting process is used to formulate the composite sampling by varying iron oxide in 5% and 10% by weight. Three different heat treatment process of hardening, annealing and normalizing is carried out on samples of aluminium (LM6), aluminium (LM6) + 5% Fe2O3 and aluminium (LM6) + 10% Fe2O3. Composite specimens are tested to analyze the mechanical properties such as hardness, yield stress, tensile strength and elongation. Present reinforcement specks enabled the alloy to preserve higher hardness during the heat treatment. Results have shown substantial improvements in properties of the specimens with various compositions of reinforcement.

The Mechanical Characterization of Al2O3 Reinforced AL6061 Metal Matrix Composite

2015 ◽  
Vol 766-767 ◽  
pp. 257-262
Author(s):  
P. Mohan ◽  
M. Kathirvel ◽  
N. Azhagesan ◽  
M. Sivapragash
Keyword(s):  
Fracture Toughness ◽  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Material Characterization ◽  
Metal Matrix ◽  
Treatment Process ◽  
Mechanical Characterization ◽  
Casting Process ◽  
Stir Casting

The aluminium based composites are increasingly being used in the transport, aerospace, marine, automobile and mineral processing industries. The widely used reinforcing materials for these composites are silicon carbide, aluminium oxide and graphite in the form of particles or whiskers. In this study Al6061-6 & 4wt% Al2O3 based metal matrix composite were produced by mechanical stir casting process. The obtained cast metal matrix composite is carefully machined to prepare the test specimens for hardness, tensile as well as fracture toughness studies as per ASTM standards. The hardness, tensile strength and fracture toughness properties of Al6061-Al2O3 composites are explored experimentally. Finally compare the material characterization with heat treatment process sample and compare the fracture toughness of sample with mathematical approach, experimental and finite element method.

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.

Wear Analysis of LM 25 (A356) Alloy Manufactured by Squeeze Casting

2017 ◽  
Vol 867 ◽  
pp. 157-164
Author(s):  
N. Nagendran ◽  
V.K. Shanmuganathan ◽  
N. Gayathri ◽  
G. Dinesh Ram
Keyword(s):  
Heat Treatment ◽  
Treatment Process ◽  
Squeeze Casting ◽  
A356 Alloy ◽  
Wear Test ◽  
Casting Process ◽  
Wear Behaviour ◽  
Heat Treatment Process ◽  
Wear Analysis ◽  
Before And After

Historically, the series of LM were developed for high strength, corrosion resistance, and good machinability for many applications. LM 25 Al-7Si-0.3Mg-0.5Fe alloy cylindrical shaped castings were manufactured successfully by Squeeze Casting process at high temperature and high pressure. The casting products were made by addition of nanoparticles and without nanoparticles. Heat treatment process was conducted at 490○C and metals was quenched at 30○C (water).Specimens were prepared with and without squeeze and stirrer. Wear test was carried out by, variation in load, and microstructure also studied. The results were compared before and after the heat treatment process for addition of nanoparticle and without nanoparticle. SEM analysis was made on worn surface of the wear specimens for different conditions to study the influence of different casting on the wear behaviour mechanism of the cast alloys. Surface roughness was evaluated before and after the wear analysis for various conditions.

Fabrication of aluminum metal matrix composite with carbon nanoparticles via stir casting

2021 ◽  
Author(s):  
Alka Sawale ◽  
Kancharla Harsha Vardhan Reddy ◽  
Kailash Poornashree ◽  
Puja Savdas Dosa Karmur
Keyword(s):  
Metal Matrix Composite ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Carbon Nanoparticles ◽  
Stir Casting ◽  
Aluminum Metal ◽  
Aluminum Metal Matrix Composite
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