Fabrication and characterization of SiC-reinforced Al-4032 metal matrix composites

2022 ◽  
Author(s):  
Pardeep Saini ◽  
Pradeep K. Singh
Keyword(s):  
Impact Toughness ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Low Cost ◽  
Matrix Material ◽  
Stir Casting ◽  
Optical Microscope ◽  
Matrix Composites ◽  
Sic Composites ◽  
The Impact

Abstract Aluminium metal matrix composites (AMCs) have become quite popular for light weight, low cost, and good workability. The present work reports the impact of silicon carbide (SiC) reinforcement on the physical, microstructural, and mechanical characteristics of Al-4032/SiC composites with 4, 6, 8% of SiC (particle size 54μm) fabricated through bottom pouring stir casting. Density and porosity measurements of all three AMCs have been performed using the rule of mixture. The microstructure of the AMC samples has been analyzed using an optical microscope (OM), x-ray diffraction analysis (XRD), and scanning electron microscopy (SEM) equipped with energy dispersive spectroscopy (EDS). The mechanical properties, in terms of the ultimate tensile strength (UTS), elongation, micro-hardness, and impact toughness of the AMCs have also been obtained according to American society for testing and materials (ASTM) standards. A maximum 1.52% increase in theoretical density, while a maximum 2.92% decrease in experimental density has been recorded for 8% reinforcement. The UTS, microhardness, and impact toughness of the AMC have been found to improve significantly owing to the addition of ceramic particles. The uniform distribution of SiC particles all over base Al-4032 matrix material has been noticed by SEM and OM for AMCs up to 6% reinforcement.

scholarly journals Investigation on Stir Casting Fabrication Method Issues Analysis of Aluminium Metal Matrix Composites

2021 ◽  
Vol 23 (10) ◽  
pp. 44-60
Author(s):  
M. Thayumanavan ◽  
◽  
K. RVijayaKumar ◽  
Keyword(s):  
Metal Matrix Composite ◽  
Metal Matrix Composites ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Matrix Material ◽  
Stir Casting ◽  
Matrix Composites ◽  
Reinforcement Material ◽  
Mould Cavity ◽  
Aluminium Metal

Among the various types of manufacturing process methods for discontinuous metal matrix composite, stir casting is the best suitable manufacturing process to fabricate particulate reinforced metal matrix composite. Its benefit is its simplicity, durability, and adaptability. The main issue in this process is proper wetting of reinforcement in aluminium matrix material. Only proper wetting results in a homogeneous dispersion of reinforcement material, and these homogeneous dispersions help to improve the properties of metal matrix composite material. The purpose of this paper was to discuss the outline of the stir casting process, process parameters, and the contribution effect of process parameters. This paper also presents about of the conditions should follow during the addition of reinforcement material and matrix material pouring in mould cavity. This paper also discusses the conditions that must be met during the addition of reinforcement material and matrix material pouring in the mould cavity. This paper also looked into the impact and contribution of stirring casting time, speed, and temperature in aluminium metal matrix composites, as well as processing issues in aluminium metal matrix composites, challenges, and research opportunities.

scholarly journals Study on Wear Property of MWCNT's reinforced with Aluminium 2024 Metal Matrix Composites with Nickel Coating

2020 ◽  
pp. 71-76
Author(s):  
Muzakkir Ahmed Khan ◽  
P Vijaya Kumar ◽  
Puneeth P ◽  
Meghashree K A
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Nickel Coating ◽  
Matrix Material ◽  
Weight Ratio ◽  
Stir Casting ◽  
Multiwall Carbon Nanotube ◽  
Wear Property ◽  
Scale Production ◽  
Matrix Composites

Various metal matrix composites (MMCs) are widely used in the automotive, aerospace and electrical industries due to their capability and flexibility in improving the mechanical, thermal and electrical properties of a component. However, current manufacturing technologies may suffer from insufficient process stability, reliability and inadequate economic efficiency and may not be able to satisfy the increasing demands placed on MMCs. So CNT based Aluminium based metal matrix composites (MMCs) has been a better choice for the industrial applications due to their Inherent properties like ductile, highly conductive, lightweight and have a high strength to weight ratio. In this study, Multiwall carbon nanotube(MWCNT) which is emerged as an excellent reinforcement material and 2024 aluminium alloy being a matrix material were selected for the development of MMC‟s. Stir casting process being a low cost casting technology which has potential to produce MMCs having agility to large scale production with great manufacturing flexibility, quality and high efficiency. In this work, The experimental investigation of CNT reinforced 2024 Aluminium MMCs under Stir casting technique were explored. Casted samples were prepared with different wt. % of reinforcements(i.e. 0.5 %, 1.0%, 1.5% & 2 % CNT‟s with 40micron nickel coating on the surface using electro-less plating process) and compared with unreinforced aluminium specimens for the investigation of Wear properties has been evaluated as per ASTM standard.

scholarly journals Influence of Solutionising and Aging Treatments on Mechanical Behavior of Stir-Cast Eutectoid Steel Powder Reinforced Al 7075 Metal Matrix Composites

2018 ◽  
Vol 15 (3) ◽  
pp. 5583-5591 ◽  
Author(s):  
Rajesh Rajesh ◽  
Sathyashankara Sharma ◽  
M. C. Gowrishankar
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Matrix Material ◽  
Steel Powder ◽  
Stir Casting ◽  
Matrix Composites ◽  
Eutectoid Steel ◽  
Al 7075

Al 7075 is a good choice as a matrix material to prepare metal matrix composites (MMCs) owing to its better specific tensile strength and toughness. Among different types of the recently introduced composite materials, particles reinforced MMC and in particular aluminium as matrix material have been found to have enormous industrial applications like automotive and aerospace sectors. In the present study, mechanical properties of Al 7075-eutectoid steel powder metal matrix composites is assessed in age-hardened and as-cast conditions. The heat treatment processes are carried out in atmospheric condition. Eutectoid steel (water hardenable tool steel - W1grade) reinforced aluminium 7075 is an attempt to investigate the role of micro-constituent phases on property alterations of metal matrix composites. As an economical and promising route for MMC, liquid stir casting technique is used to reinforce synthesised steel powder in the matrix of Al 7075. Heat treatment is performed as a tool to mould and improve the required mechanical properties as per the requirements. Eutectoid steel powder is selected as the reinforcement material since it is believed to be composed of lamellar pearlite with ferrite and cementite as alternate layers in as-cast condition, serving as micro-hybrid reinforcement to improve hardness and strength. In this work four different proportions of steel powder (2, wt.% 4 wt.% and 6 wt.%) reinforced composites are prepared by a two-stage stir casting process. Age-hardening treatment is given to the samples and analysed critically and compared with alloy matrix for different properties such as tensile strength, hardness and toughness. Results have shown significant improvement in the ultimate tensile strength and hardness of the composites after aging treatment. The 4 wt.% steel powder reinforced composite has shown better results compared to other composites.

scholarly journals Mechanical Characterization of Aluminium-Titania Metal Matrix Composites

2020 ◽  
Author(s):  
Padmavathi K R ◽  
Ramakrishnan R ◽  
Karthikeyan L ◽  
ChezhianBabu S
Keyword(s):  
Metal Matrix Composite ◽  
Metal Matrix Composites ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Mechanical Characteristics ◽  
Matrix Material ◽  
Stir Casting ◽  
Matrix Composites ◽  
Weight Percentage ◽  
Metal Matrix Composite Material

Researchers investigated the mechanical properties of Aluminium Metal Matrix Composites (AMMC) with several reinforcements and negligible work has been administered on analysing the mechanical characteristics of AMMC with rutile nanotitania reinforcement material. Metal matrix composite with Aluminium 6061 metallic element as matrix material and nanotitania as reinforcement with 0.5, 1.0, 1.5 and 2.0 weight percentages was fabricated through stir casting method followed by die casting and heat treatment. Consequent exploration on mechanical characteristics viz. micro hardness, tensile, compressive and impact strength were carried out. The fabricated samples were examined using scanning electron microscopy and analysed. The outcomes exhibited enhanced mechanical characteristics for 1.0 weight percentage nanotitania reinforced aluminium6061 metal matrix composite material.

Wear Characterization of Aluminium Metal Matrix Composites

2013 ◽  
Vol 22 (4) ◽  
pp. 096369351302200 ◽  
Author(s):  
S. Vijayakumar ◽  
L. Karunamoorthy
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Volume Fraction ◽  
Matrix Material ◽  
Wear Test ◽  
Stir Casting ◽  
Wear Behaviour ◽  
Matrix Composites ◽  
Aluminium Metal ◽  
Wear Characterization

Aluminium metal matrix composites wear characterization is presented in the paper. The LM25 grade aluminium alloy is chosen as matrix material and reinforcements are silicon carbide, zircon and garnet particles. AlMMCs are produced by conventional stir casting method and heat treated before making wear test specimens according to the ASTM G99 standards. The wear behaviour of these composites is studied under laboratory conditions using a pin-on-disc wear test rig. The wear behaviour of these composites is studied under sliding on EN32 steel disc. The influence of reinforcement type, volume fraction, particle size, sliding speed, applied load and sliding distance is analyzed.

Fabrication and Sliding Wear Behaviour of Metal Matrix Composites

2014 ◽  
Vol 612 ◽  
pp. 157-162 ◽  
Author(s):  
J. Udaya Prakash ◽  
T.V. Moorthy ◽  
S. Ananth
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Matrix Material ◽  
Wear Test ◽  
Stir Casting ◽  
Wear Behaviour ◽  
Matrix Composites ◽  
Sliding Speed ◽  
Weight Percentage ◽  
Sliding Distance

Wear behaviour of aluminium matrix composites are characterized by pin on disc wear test using various parameters such as sliding distance, sliding speed and load. MMC consists of aluminium alloy (A356) as the matrix material and particulate alumina of 5% and 10% by weight as the reinforcement was fabricated using stir casting. Wear resistance of composites are improved by the presence of reinforcements. Experiments were conducted based on the plan of experiments generated through Taguchi Technique. L9 orthogonal array was selected for analysis of data. The objective of this investigation is to study the influence of sliding speed, sliding distance, load and weight percentage reinforcement on wear rate of fabricated metal matrix composites.

scholarly journals Study on Mechanical Properties of Multiwalled Carbon Nanotubes Reinforced with Aluminium 2024 Matrix Composites with Nickel Coating

2020 ◽  
pp. 75-83
Author(s):  
Muzakkir Ahmed Khan ◽  
P Vijaya Kumar ◽  
Puneeth P ◽  
Meghashree K A
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Nickel Coating ◽  
Matrix Material ◽  
Weight Ratio ◽  
Stir Casting ◽  
Multiwall Carbon Nanotube ◽  
Scale Production ◽  
Matrix Composites

Various metal matrix composites (MMCs) are widely used in the automotive, aerospace and electrical industries due to their capability and flexibility in improving the mechanical, thermal and electrical properties of a component. However, current manufacturing technologies may suffer from insufficient process stability, reliability and inadequate economic efficiency and may not be able to satisfy the increasing demands placed on MMCs. So CNT based Aluminium based metal matrix composites (MMCs) has been a better choice for the industrial applications due to their Inherent properties like ductile, highly conductive, lightweight and have a high strength to weight ratio. In this study, Multiwall carbon nanotube(MWCNT) which is emerged as a excellent reinforcement material and 2024 aluminium alloy being a matrix material were selected for the development of MMC’s. Stir casting process being a low cost casting technology which has potential to produce MMCs having agility to large scale production with great manufacturing flexibility, quality and high efficiency. In this work, The experimental investigation of CNT reinforced 2024 Aluminium MMCs under Stir casting technique were explored. Casted samples were prepared with different wt % of reinforcements(i.e., 0.5 %, 1.0%, 1.5% & 2 % CNT’s with 40micron nickel coating on the surface using electro-less plating process) and compared with unreinforced aluminium specimens for the investigation of mechanical properties such as Tensile, Compressive, and Hardness has been evaluated as per ASTM standard.

scholarly journals MICROSTRUCTURE AND MECHANICAL CHARACTERIZATIONS OF LM6-AL/AL2O3 METAL MATRIX COMPOSITES PRODUCED BY STIR CASTING TECHNIQUE

2021 ◽  
Vol 83 (5) ◽  
pp. 27-34
Author(s):  
Essam R. !. Mahmoud ◽  
A. Shaharoun ◽  
S. Z. Khan ◽  
F. O. Elmahroogy ◽  
H. Almohamadi
Keyword(s):  
Brittle Fracture ◽  
Impact Toughness ◽  
Fracture Surface ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Stir Casting ◽  
Multiple Cracks ◽  
Mixed Mode Fracture ◽  
Matrix Composites ◽  
Al2o3 Addition

LM6-aluminum alloy based-metal matrix composites (MMC) reinforced with Al2O3 ceramic particles were fabricated through stir casting. Al2O3 particles with different weight content (5, 10, and 15%) were dispersed into the LM6 Al-Si alloy. The macro and microstructures, mechanical properties, fracture surface, hardness, and impact toughness of the resulted MMCs together with the plain LM6 alloy were evaluated. The results showed that the added 5 wt.% Al2O3 was distributed homogenously with good wettability. The addition of Al2O3 refined the constituents of the LM6 alloy; Al-Si dendrites and the α-Al grains. At 10 wt.% Al2O3, some localized clusters appeared with some granular cracks. Increasing the Al2O3 addition to 15 wt.% resulted in particle agglomerations with multiple cracks and porosity. Both the tensile strength and the 0.2 % proof strength of the produced MMCs were improved up to 10 wt.% Al2O3 and then reduced. The fracture surface of 5 wt.% MMC was brittle-ductile mixed-mode fracture dominated by brittle fracture. The other percentages were almost brittle fracture. The hardness of the produced MMCs was remarkably improved. The hardness value reaches to about 86 HV at 10 wt. % Al2O3 addition. The impact toughness of the resulted composite materials was decreased notably at higher addition of Al2O3.

On the impact toughness of Al-15 vol.% B 4 C metal matrix composites

2015 ◽  
Vol 79 ◽  
pp. 83-94 ◽  
Author(s):  
M.F. Ibrahim ◽  
H.R. Ammar ◽  
A.M. Samuel ◽  
M.S. Soliman ◽  
F.H. Samuel
Keyword(s):  
Impact Toughness ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Matrix Composites ◽  
The Impact
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