scholarly journals Experimental Study on Tribological Characteristics of AA 6061 Alloy Reinforced with Al2O3 and B4C Particles

2018 ◽  
Vol 24 (6) ◽  
pp. 1
Author(s):  
Khansa Daood AlShamari ◽  
Ihsan Kadhom AlNaimi ◽  
Raad Hameed Majid
Keyword(s):  
Hardness Test ◽  
Ceramic Materials ◽  
Stir Casting ◽  
Casting Method ◽  
Specific Strength ◽  
High Specific Strength ◽  
Pin On Disc ◽  
B4c Particles ◽  
Automotive Parts ◽  
Marine Applications

Two different composite materials were prepared by stir casting method of AA 6061 alloy as a matrix reinforced with two addition different ceramic materials Al2O3 and B4C of grain size   20 µm by 2.5, 5, 7.5 and10% in weight. The composite material with aluminum alloy as a matrix possesses a unique mechanical properties such as: high specific strength and hardness, low density, and high resistance to corrosion and friction wear. This composite is widely used in automotive parts space and marine applications. Pin-on-disc technique was used to calculate the wear rate for each addition of Al2O3 and B4C particles. Rockwell hardness test and optical micrographs examinations were carried out to analyze, compare, and evaluate the addition of reinforced particles. The results of this investigation appeared that the 7.5% of ceramic particles addition give highest values of the hardness and wear resistance.      

Wear Characteristics Optimization of Al6061-Sugarcane Bagasse Ash Metal Matrix Composite Using Taguchi Method

2021 ◽  
Vol 106 ◽  
pp. 10-16
Author(s):  
Anwesh K. Virkunwar ◽  
Shouvik Ghosh ◽  
Ranjan Basak
Keyword(s):  
Composite Material ◽  
Metal Matrix ◽  
Volume Fraction ◽  
Stir Casting ◽  
Friction Test ◽  
Casting Method ◽  
Pin On Disc ◽  
Sugarcane Bagasse Ash ◽  
Sem Test ◽  
Composite Samples

In present work, Aluminium 6061 was reinforced by varying the percentage of sugarcanebagasse ash (SCBA). Al-SCBA composite samples were fabricated by stir casting method. The weartest conducted on the samples using a pin on disc machine under the normal sliding condition. Basedon the testing parameters (Volume fraction ‘V’, Load ‘L’, sliding speed ‘S’) an L27 Orthogonal arraydesign was selected. According to L27 array, the wear & friction test was conducted. variance analysis(ANOVA) was performed to find out the important parameter and contribution in percentage for eachparameter on the composite material. To verify the analysis results with experimented resultconfirmation test was carried out. Further, to find the wear mechanism on the composite sampleselectron microscopy (SEM) test was used.

On the Flow and Creep Strength of Power Law Materials Containing Rigid Reinforcements

1990 ◽  
Vol 194 ◽  
Author(s):  
Ming Y. He
Keyword(s):  
Power Law ◽  
Creep Strength ◽  
Ceramic Materials ◽  
Al Alloys ◽  
Metallic Materials ◽  
Flow Properties ◽  
Flow Strength ◽  
Specific Strength ◽  
High Specific Strength ◽  
Properties Of Materials

AbstractInvestigation of the flow properties of materials containing rigid reinforcements has been prompted by various technological challenges concerned with high specific strength composites. The materials of interest range from metallic materials such as Al alloys, to ceramic materials such as Si3N4 and also include the intermetallics: TiAl and MoSi2. The reinforcements are typically A12O3 and SiC. The strengths of interest may be the flow strength at ambient temperature or the creep strength. The present analysis constitutes an attempt to provide estimates of either the flow or creep strength for matrices that exhibit power law deformation.

scholarly journals Studies on Tribological and Statistical Modeling for Al/ZrO2 MMC’s

2021 ◽  
Vol 9 (8) ◽  
pp. 2484-2491
Author(s):  
Dhiroj Kumar Pradham
Keyword(s):  
Metal Matrix ◽  
Cast Alloy ◽  
Hardness Test ◽  
Statistical Modelling ◽  
Stir Casting ◽  
Early Growth ◽  
Casting Method ◽  
Wear Analysis ◽  
Alloy Hardness ◽  
Reinforcing Material

Abstract: In recent era early growth and remarkable development with regards of composite materials has become a need of designing area on account of consideration to the drawbacks over conventional materials in improving material properties which includes viz, stiffness, density, toughness, and strength.This research focuses on utilizing the stir casting method of forming better metal matrix composite by using ZrO2 as reinforcing material thereby developing a composite material.Current study investigates Al357 alloy is fortified with different percentage of ZrO2 (3%, 5% and 7%) is concocted by the stir casting and studied for a microstructure, mechanical and the statistical modelling of wear analysis. Wear tracks of the as-cast alloy and its composites were examined using SEM. From the results it was concluded that compared to as-cast alloy A357/ 7 % ZrO2 displayed better properties compared followed by 5% and 3% composites. Keywords: MMC’S; ZrO2; Aluminium 357 alloy; Hardness test; Statistical Analysis.

scholarly journals Investigation of Mechanical Properties for Titanium Alloy TI-6AL-4V-SS316

2020 ◽  
Vol 3 (9) ◽  
pp. 59-61
Author(s):  
P. Arulmurugan ◽  
J. Venkatraman ◽  
P. Saravanan
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Titanium Alloy ◽  
Bone Cells ◽  
High Strength ◽  
Hardness Test ◽  
Stir Casting ◽  
Casting Method ◽  
High Corrosion Resistance ◽  
Inherent Advantage

Titanium and its alloys are being extensively research and are applied relatively in different field of dentistry in since 1970s. Inherent advantage like high strength, ductility, Low modules of plasticity, high corrosion resistance as titanium alloy (Ti 6A 4V ELI –SS316). It is also light weight and highly tolerant to damage by other the alloy content. It is iron are mixing so forming the corrosion resistance and magnetism effect. So to add aluminum, vanadium and carbon content increases and iron content was decrease the various percentage for metal matrix composite(MMC) methods and stainless steel ss316 add by using stir casting method, and to check the hardness test, corrosion test and chemical specification and mechanical properties of the materials. To avoid the bone cells loss and bone desorption. It has superior biocompatibility making it easy to gratin and attach to bone all which being accepted by the human body.  

scholarly journals Effect of Nano B4C on the Tribological Behaviour of Magnesium Alloy Prepared Through Powder Metallurgy

2020 ◽  
Vol 26 (4) ◽  
pp. 392-400
Author(s):  
Sankar CHINTHAMANI ◽  
Gangatharan KANNAN ◽  
Glan Devadhas GEORGE ◽  
Christopher Ezhil Singh SREEDHARAN ◽  
Krishna Sharma RAJAGOPAL
Keyword(s):  
Powder Metallurgy ◽  
Magnesium Alloy ◽  
Wear Test ◽  
Hardness Test ◽  
High Energy ◽  
Dry Sliding Wear ◽  
Tribological Behaviour ◽  
Ball Mills ◽  
Pin On Disc ◽  
B4c Particles

In this present study, the particle size of as received magnesium alloy (AZ91) and B4C powders was reduced through high energy ball mills. The combination of AZ91 (both 10 µm and 60 µm) reinforced with nano B4C particles were fabricated by powder metallurgy technique. The incorporation of nano B4C particles to the Mg matrix was done at various weight % such as 5, 10, 15 and 20. The AZ91 composites were fabricated in a suitable die set assembly and the green compacts were sintered in an electric muffle furnace at 500 °C with argon atmosphere for a dwell time of 1 h. The density of the composites was estimated using Archimedes principle. Micro hardness test was carried out for the prepared specimens and dry sliding wear test was conducted by using pin-on-disc apparatus at room temperature with varying loads and sliding velocities by keeping a constant Sliding Distance (SD). Among the various specimens, the composite with 10 µm size attained a higher Vickers hardness value as well as better wear resistant property. Worn surface analysis of the prepared composites was studied using Scanning Electron Microscope (SEM).

scholarly journals COMPARISON OF MECHANICAL AND MICROSTRUCTURAL EXAMINATION OF AL7075 COMPOSITES REINFORCED WITH MICRO AND NANO B4C

2020 ◽  
Author(s):  
Krishna Mohan Singh ◽  
A. K. Chauhan
Keyword(s):  
Mechanical Properties ◽  
Aluminum Matrix ◽  
Stir Casting ◽  
Aluminum Matrix Composites ◽  
Matrix Composites ◽  
Casting Method ◽  
Lightweight Materials ◽  
Fine Microstructure ◽  
B4c Particles ◽  
Microstructural Examination

Due to the demand for lightweight materials in the field of automobiles, aeronautics and some other application, there is a need to develop lightweight materials. For the last few decades, aluminum matrix composites are being developed in order to meet out the demand of the above-mentioned industries. aluminum the above, lightweight material in the form of composites of B4C reinforced in Al7075 alloy is considered for the present investigation. The composite was produced using the stir casting method. In this investigation, the micro and nano B4C particles were used as reinforcements. The fabricated composites were characterized for microstructure and mechanical properties. From the microstructural examination, it was observed that 12% of B4C nanocomposites was having fine microstructure as compared to others. The hardness and strength were found to be maximum for 12 % B4C nanocomposites which impact strength was lowest for 12% micro composites.

scholarly journals Study of mechanical and wear characteristics of AL380 composite fabricated by introducing B4C using compo casting method

2018 ◽  
Vol 7 (4.5) ◽  
pp. 526
Author(s):  
Ch. V. M. Prasad ◽  
K. Mallikarjuna Rao
Keyword(s):  
Mechanical Properties ◽  
Wear Rate ◽  
Metal Matrix ◽  
Homogeneous Distribution ◽  
Al Alloy ◽  
Wear Properties ◽  
Casting Method ◽  
Pin On Disc ◽  
B4c Particles ◽  
Wear Tests

In the present work, Al380 Al alloy and B4C metal matrix composite was fabricated with different weight fractions (1%,2% and 3%) using compo-casting method. The wear properties of fabricated composite is tested by pin on disc apparatus. On different loads of 30N,60N and 90N the wear tests are performed. The mechanical properties of hardness and tensile strength are performed on brinell’s hardness apparatus and Ultimate tensile machine. The study of homogeneous distribution of B4C particles were examined by scanning electron microscope (SEM) in the composites. The result shows that the Al380 Al alloy reinforced with B4C particles, that composite improves the mechanical properties and wear rate. Increasing of wear rate with the increase in B4C particles in composites. Using Opti- cal microscope, the study of worn surfaces of pins were analyzed. 

scholarly journals Effect of Stirring Speed and Stirring Time on Distribution of Nano Al2O3 Particles in Al7075 Metal Matrix Composite

2019 ◽  
Vol 8 (2) ◽  
pp. 86-89
Author(s):  
H. P. Raju ◽  
M. S. Prashanth Reddy
Keyword(s):  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Mixing Time ◽  
Testing Machine ◽  
Hardness Test ◽  
Processing Parameters ◽  
Stir Casting ◽  
Casting Method ◽  
Universal Testing ◽  
Stirring Time

Al7075 was successfully synthesized with the addition of Nano Al2O3 with 1.00Wt% by stir casting method by considering various stirring speeds and stirring times during this study. Scanning Electron Microscopy (SEM) is adapted to examine the microstructure of prepared composites. Tensile strength are tested on composite specimens (as per ASTM E8M-09) using computerized Universal Testing Machine (UTM). Micro Vicker’s hardness test was carried out on top of the polished composite specimens. The results showed the microstructure, ultimate tensile strength and hardness of the composite were influenced by the stirring speed and stirring time. From the microstructure it is revealed that, the particle clustering was more at a lower stirring speed with a lower stirring time. Increased mixing speed and mixing time resulted in better particle distribution. The results of the hardness test also demonstrated that, the composite’s hardness is affected by the stirring speed and time. At 400 rpm with a stirring time of 10 minutes, the uniform hardness levels are achieved. But the properties degraded again after an interval of certain time. Present study is conducted to determine microstructure, ultimate tensile strength, and hardness of composite and the tendency between processing parameters such as stirring speed and time.

scholarly journals WEAR CHARACTERIZATION OF LM29 ALLOY WITH40 MICRON SIZED B4C REINFORCED METAL COMPOSITES

2021 ◽  
Vol 9 (11) ◽  
pp. 363-371
Author(s):  
G. Pathalinga Prasad ◽  
◽  
H.C. Chittappa ◽  
Madeva Nagaral ◽  
◽  
...  
Keyword(s):  
Normal Load ◽  
Testing Machine ◽  
Matrix Alloy ◽  
Stir Casting ◽  
Wear Testing ◽  
Wear Loss ◽  
Wear Properties ◽  
Alloy Matrix ◽  
Pin On Disc ◽  
B4c Particles

This paper deals with the fabrication and evaluation of wear properties by introducing40 micron size B4C particulates into LM29 alloy matrix. LM29 alloy based metal matrix composites were prepared by stir casting method. 3, 6 and 9 wt. % of 40 micron sized B4C particulates were added to the base matrix. For each composite, the reinforcement particles were pre-heated to a temperature of 600 degree Celsius and then dispersed in steps of two into the vortex of molten LM29 alloy to improve wettability. The Micostructural study was done by using Scanning Electron Microscope (SEM), which revealed the uniform distribution of B4C particles in matrix alloy, EDS analysis confirmed the presence of B4C particles in the LM29 alloy matrix.A pin-on-disc wear testing machine was used to evaluate the wear loss of prepared specimens, in which a hardened EN32 steel disc was used as the counter face. The results revealed that the wear loss was increased with increase in normal load and sliding speed for all the specimens. The results also indicated that the wear loss of the LM29-B4C composites were lesser than that of the LM29 matrix. The worn surfaces and wear debris were characterized by SEM microanalysis.

scholarly journals Multi objective optimization of wear behaviour of Aluminum MMCs using Grey-Taguchi method

2020 ◽  
Vol 7 ◽  
pp. 16
Author(s):  
Poovalingam Muthu
Keyword(s):  
Wear Rate ◽  
Coefficient Of Friction ◽  
Weight Ratio ◽  
Stir Casting ◽  
Sem Analysis ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Specific Strength ◽  
Pin On Disc ◽  
Grey Relational

In recent years, metal matrix composite (MMCs) have been receiving worldwide attention on account of their superior strength-to-weight ratio and stiffness. Among the several classes of composite materials, Aluminium matrix ceramic reinforcement composites have attracted increasing attention due to their unique properties such as better specific strength, specific stiffness, wear resistance, excellent corrosion resistance, high elastic modulus and light weight. The aim of the present investigation is to optimize the dry sliding wear parameters of Aluminum LM25 matrix reinforced with silicon carbide (SiC) (5 wt.%) and Copper (Cu) (3 wt.%) using Taguchi based grey relational analysis. In this work, the composite is prepared using stir casting method. The specimens are prepared according to ASTM standard. Using pin-on-disc apparatus, wear tests are conducted as per Taguchi's L9 orthogonal array and optimum wear parameters are identified with an objective to minimise the wear rate and coefficient of friction based on the grey relational grade. The effect of parameters on the wear rate and coefficient of friction was determined using Analysis of variance (ANOVA). Finally, the experimental results were verified using confirmation tests and the SEM analysis was carried out to study the wear mechanism.

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