scholarly journals Fabrication, Characterization, and Impact of Heat Treatment on Sliding Wear Behaviour of Aluminium Metal Matrix Composites Reinforced with B4C

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Krishna Mohan Singh ◽  
Akhilesh Kumar Chauhan
Keyword(s):  
Heat Treatment ◽  
Wear Rate ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Volume Fraction ◽  
Microstructural Characterization ◽  
Stir Casting ◽  
Wear Behaviour ◽  
Matrix Composites ◽  
Weight Percentage

The aim of this research paper is to find the wear behaviour of Al7075 MMCs. In this investigation, the wear tests on the as-cast and age-hardened specimens were performed on an advanced rotary tribometer. The materials selected for the analysis are Al7075 as a matrix, and the reinforcements are boron carbide. By using stir casting, metal matrix composites are manufactured by adding B4C as a reinforcement particulate in Al7075. The fabricated composites were characterized and the wear behaviour of these composites was carried out on an advanced rotary tribometer. The wt. % of the reinforcements was taken as 6%, 8%, 10%, and 12%. The almost homogeneous blending of reinforcements is shown by the microstructural characterization of Al7075 MMCs. It is observed that due to the rise in weight percentage of the reinforcement to 12% higher hardness is obtained. For 12% of reinforcements, there is an increase in hardness due to the heat treatment than that of the as-cast composites. From this study, it was found that the wear rate is the function of the applied load, microstructure, and volume fraction of the reinforcements. The wear rate was increasing with the sliding velocity.

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.

Microstructure and Properties of Stir Cast AZ91 Mg Alloy – SiCp Composites

2012 ◽  
Vol 710 ◽  
pp. 365-370 ◽  
Author(s):  
Sujayakumar Prasanth ◽  
Kumaraswamy Kaliamma Ajith Kumar ◽  
Thazhavilai Ponnu Deva Rajan ◽  
Uma Thanu Subramonia Pillai ◽  
Bellambettu Chandrasekhara Pai
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Microstructural Characterization ◽  
Casting Process ◽  
Stir Casting ◽  
Tensile Fracture ◽  
Matrix Composites ◽  
Az91 Magnesium Alloy ◽  
The Matrix ◽  
Az91 Magnesium

Magnesium metal matrix composites (MMCs) have been receiving attention in recent years as an attractive choice for aerospace and automotive applications because of their low density and superior specific properties. Using stir casting process, AZ91 magnesium alloy metal matrix composites have been produced with different weight percentages (5, 10, 15, 20 and 25) of silicon carbide particles (SiCp) addition. Microstructural characterization reveals uniform distribution of SiC particles with good interfacial bonding between the matrix and reinforcement. Electrical conductivity and Co-efficient of Thermal Expansion (CTE) measurements carried out on these composites have yielded better properties. Improved mechanical properties such as hardness, ultimate tensile strength, and compressive strength are obtained. The microfracture mechanisms involved during tensile fracture is analyzed and correlated with the properties obtained.

Study on Mechanical Properties of Al 7075 Hybrid Metal Matrix Composites

2015 ◽  
Vol 813-814 ◽  
pp. 230-234 ◽  
Author(s):  
T.S.A. Suryakumari ◽  
S. Ranganathan ◽  
P. Shankar
Keyword(s):  
Mechanical Properties ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Stir Casting ◽  
Impact Loads ◽  
Matrix Composites ◽  
Casting Method ◽  
Weight Percentage ◽  
Hybrid Metal Matrix Composites ◽  
Al 7075

The present investigation involves studying the mechanical properties of the fabricated aluminium 7075 hybrid metal matrix composites reinforced with various weight % of SiC and Al2 O3 particulates by stir casting method. The Al 7075 hybrid metal matrix composites specimen were fabricated using L9 orthogonal array. The mechanical properties like Brinell Harness (BHN), Rockwell Hardness (HRC) and impact loads were experimented. The mechanical properties like hardness and impact loads have improved with the increase in weight percentage of SiC and Al2O3 particulates in the hybrid aluminium matrix.

Investigation on wear behaviour of Al7075-SiC metal matrix composites prepared by stir casting

2020 ◽  
Vol 26 ◽  
pp. 2992-2995
Author(s):  
Abhijit Bhowmik ◽  
Dipanjan Chakraborty ◽  
Dipankar Dey ◽  
Ajay Biswas
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Stir Casting ◽  
Wear Behaviour ◽  
Matrix Composites

Preparation and Mechanical Characterization of Stir Cast Hybrid Al7075-Al2O3 -B4C Metal Matrix Composites

2014 ◽  
Vol 592-594 ◽  
pp. 705-710 ◽  
Author(s):  
S. Dhanalakshmi ◽  
N Mohanasundararaju ◽  
P.G. Venkatakrishnan
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Hybrid Composites ◽  
Stir Casting ◽  
Matrix Composites ◽  
Constant Weight ◽  
Weight Percentage

A hybrid Al7075 metal matrix composites have been fabricated through liquid metallurgy route (Stir Casting method) using Al2O3 and B4C as reinforcement materials. The effect of weight percentage of reinforcement materials on mechanical properties of the composites have been studied by varying the weight percentage of Al2O3 as 3, 6, 9, 12 and 15% while keeping constant weight percentage of B4C (3%). The as-cast microstructure, tensile strength, micro and macro hardness of the fabricated hybrid composites have been studied. The mechanical properties of the prepared composites were increased with increasing the weight percentage of the reinforcement in the composite. The maximum tensile strength, micro-hardness and macro-hardness of 309 MPa, 140 VHN, and 112 BHN, respectively, were obtained for a hybrid Al7075 matrix composite containing 15% Al2O3 and 3% B4C.

Effect of squeezing on porosity and wear behaviour of partially remelted A319/20 vol% SiCp metal matrix composites

2008 ◽  
Vol 222 (3) ◽  
pp. 295-303 ◽  
Author(s):  
T S Mahmoud ◽  
F H Mahmoud ◽  
H M Zakaria ◽  
T A Khalifa
Keyword(s):  
Wear Resistance ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Wear Test ◽  
Weight Fraction ◽  
Stir Casting ◽  
Wear Behaviour ◽  
Matrix Composites ◽  
Casting Technique ◽  
Cast Composites

This article describes the effect of the squeezing process on the porosity of partially remelted A319/20 vol% SiC particulate (SiCp) reinforced metal matrix composites (MMCs). The composite alloy was originally fabricated by a stir casting technique. The effect of squeezing process parameters such as the squeezing time, compressive stress, and the liquid weight fraction inside the melt on the overall porosity was extensively studied. Moreover, pin-on-disc wear tests were conducted to evaluate the effect of porosity on the wear resistance of the composites. It was found that the squeezed composites have lower overall porosity when compared with the as-cast composites. The lowest overall porosity content was observed when the squeezing process variables were at their peak values. After squeezing, the gas-bubble voids were practically eliminated, whereas the inter-particle voids were significantly reduced but not completely eliminated due to fracture of SiCp and generation of new inter-particle microvoids. Wear test results showed that the wear resistance of the squeezed composites was significantly higher than the as-cast composites due to the lower porosity content of the squeezed composites. The wear resistance of the squeezed composites depends significantly on the overall porosity. It has been found that the wear rate of the squeezed composites increase with increasing overall porosity.

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.

An Investigation on the Suitability of Al-Mg Binary Hypo-Eutectic and Eutectic Aluminium Alloys as a Metal Matrix for Polymer Reinforced Composites and Lightweight Applications

2019 ◽  
Vol 969 ◽  
pp. 484-489
Author(s):  
D. Kumaran ◽  
A. Rajadurai ◽  
S.P. Sundar Singh Sivam
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Binary Alloys ◽  
Research Work ◽  
Stir Casting ◽  
Pure Aluminium ◽  
Light Weight ◽  
Matrix Composites ◽  
Sem Images ◽  
Weight Percentage

This research work reports on the investigation on the suitability of prepared Al-Mg binary alloys of hypo-eutectic and eutectic compositions, for making metal matrix composites for light weight applications. Commercial pure aluminium, and magnesium blocks were used for the purpose of making binary alloys of Al-Mg, with the Mg in weight percentages 15%, 20%, 25%, 30%, and 37%. composition prepared by stir-casting under Argon cover gas. The cast Al-Mg alloys were cut to standard specimens to investigate its microstructure and mechanical properties. Test results revealed that the Vicker’s Hardness Number (VHN) of the alloys increases with the increased weight percentage of Mg and Ultimate Tensile Strength (UTS) were also increasing with increasing Mg content. The SEM images revealed the presence of micro-voids in alloys of higher Mg contents. The test values indicates the suitability of hypo-eutectic alloys as candidates for metal matrix composites for light weight applications.

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