scholarly journals Investigations on the Effect of Flyash on the SiC Reinforced Aluminium Metal Matrix Composites

2014 ◽  
Vol 23 (3) ◽  
pp. 096369351402300 ◽  
Author(s):  
K.A. RameshKumar ◽  
K. Balamurugan ◽  
D. Gnanaraj ◽  
S. Ilangovan
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Base Material ◽  
Sem Analysis ◽  
Dry Sliding Wear ◽  
Matrix Composites ◽  
Electron Microscopic ◽  
Casting Technique ◽  
Pin On Disc ◽  
Sic Composites

The Al-SiC composites have been prepared by using liquid sand casting technique with aluminium as the base material with 10 % SiC particulates by weight. Flyash content is varied and the abrasive wear study has been conducted on a Pin-on-Disc method. Dry sliding wear characteristics of the samples were investigated in detail. Vicker's microhardness test was carried out for the Al-SiC metal matrix composites. Scanning electron microscopic (SEM) analysis was carried out for the worn out surface to visualize the surface phenomena. The results indicate that the increase in flyash composition increases the wear resistance characteristics. The results have been discussed and are outlined in detail.

Analysis on sliding wear behavior of Al + B4C+ mica hybrid metal matrix composites

2020 ◽  
Vol 10 (7) ◽  
pp. 986-997
Author(s):  
K. Velavan ◽  
K. Palanikumar
Keyword(s):  
Boron Carbide ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Stir Casting ◽  
Dry Sliding Wear ◽  
Wear Loss ◽  
Matrix Composites ◽  
Casting Technique

In this investigation, wear behavior of hybrid aluminum metal matrix composites (HMMCs) fabricated by stir casting technique is carried out. Boron carbide and Mica particles are added. The Mica percentage varies from 3–5% in steps of 1% with a constant reinforcement quantity of 10% boron carbide. The dry sliding wear experiments are explored on a pin on disc tribometer. The process variables considered for the study are: Mica mass fraction, sliding speed, load and sliding time, and the response analyzed is wear loss. Box-Behnken design is used for conducting the experiments. The result shown proves that 3% of Mica particle inclusion reduces the wear due to the increase in density. Further increase of mica does not improve the wear resistance. ANOVA results indicate that load and % of Mica are the profoundly influencing parameters. The pin surface is analyzed by using a Scanning Electron Microscope.

Wear Characteristics of Hybrid Al 6063 Matrix Composites Reinforced with Graphite and Fly Ash Particulates

2016 ◽  
Vol 854 ◽  
pp. 1-9 ◽  
Author(s):  
M. Manojkumar ◽  
R. Shanmuga Prakash
Keyword(s):  
Fly Ash ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Wear Test ◽  
Cylinder Liner ◽  
Stir Casting ◽  
Dry Sliding Wear ◽  
Matrix Composites ◽  
Liner Material ◽  
Pin On Disc

As auto manufacturers strive to meet imposed fuel economy and emissions regulations while producing vehicles with the quality and features that consumer expect, the industry needs to rely on advancements made in the field of metal matrix composites. The efforts of combining or replacing metals with the use of advanced metal matrix composites (MMCs) not only reduce weight, but can also improve safety, reliability and efficiency. A hybrid MMC was developed for the cylinder liner of advanced diesel engines. Composites of Al-6063 aluminium alloy reinforced with, fly ash particulate containing 10% and graphite particulate containing 5, 10 and 15 % were produced by stir casting. The wear and frictional properties of the casted hybrid metal matrix composites were investigated by performing dry sliding wear test using a pin-on-disc wear tester. The investigation was done to find the influence of applied load, sliding speed and sliding distance on wear rate, as well as the coefficient of friction during wearing process. From the investigation, it is evident that wear resistance of Al-6063 is increased while adding the fly ash and graphite reinforcement content. The results were compared with the existing liner material. From this comparative study the Al-6063/fly ash/graphite hybrid metal matrix composite can be the considered as an alternative material for existing cylinder material.

Effect of reinforcement percentage on wear behavior of SiCp reinforced ZA43 alloy metal matrix composites

2013 ◽  
Vol 20 (4) ◽  
pp. 311-317 ◽  
Author(s):  
Rajaneesh N. Marigoudar ◽  
Kanakuppi Sadashivappa
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Wear Behavior ◽  
Abrasive Particle ◽  
Wear Test ◽  
Stir Casting ◽  
Dry Sliding Wear ◽  
Scanning Electron Micrographs ◽  
Matrix Composites ◽  
Casting Technique

AbstractMetal matrix composites (MMCs) are characterized by high specific strength and stiffness. Light metal alloys are reinforced with hard ceramic particles, which show better properties compared to monolithic alloys. ZA43 MMCs are fabricated by stir casting technique by reinforcing preheated silicon carbide particles (SiCp). Wear behavior of ZA43 MMCs is evaluated by conducting dry sliding wear test using a pin-on-disc wear test rig. The tests were conducted for varying loads of 9.81, 19.62, 29.43 and 39.24 N and sliding disc speeds of 2.12, 2.93, 3.66, 4.39 and 5.13 m/s at constant time of 15 min. The results reveal that the wear resistance property of the composite increases as the percentage of reinforcement increases. It was also observed that volume loss increases with increasing applied load and sliding speed. The tested samples were examined and analyzed by taking scanning electron micrographs. The dominating wear mechanisms observed were delamination, scissoring of the abrasive particle, pullout of particle, smearing of the surface and abrasion.

scholarly journals Exploration of Special Properties of AL 5056/CNT Metal Matrix Nano-Composites

2019 ◽  
Vol 8 (2) ◽  
pp. 2829-2833
Keyword(s):  
Electrical Conductivity ◽  
Metal Matrix ◽  
Base Material ◽  
Stir Casting ◽  
Sem Analysis ◽  
Corrosion And Wear ◽  
Nano Composites ◽  
Matrix Composites ◽  
Casting Technique ◽  
Carbon Nano Tube

Over the two decades, researchers and manufacturers of automotive and aerospace appliances have paid much attention and interest to metal matric composites (MMC) due to their unique properties. This paper focus on the special characteristics of Metal Matrix Composites of Aluminum Al5056 reinforced with Carbon Nano Tube (CNT) in different weight ratios of 0.4%, 0.7% and 1.1% of base material. Stir-casting technique is utilized to prepare the composites in line with ASTM standards. The specimens are tested for electrical conductivity, corrosion and wear features. Further the internal structure of these composites is studied by using the SEM Analysis. It is found from the results that by adding reinforcement the composites are affected and SEM analysis of AMMNCs reveal a uniform distribution of CNT in the alloy of Aluminum.

scholarly journals Mechanical and Microstructural Characterization of Friction Stir Welded SiC and B4C Reinforced Aluminium Alloy AA6061 Metal Matrix Composites

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3110
Author(s):  
Kaveripakkam Suban Ashraff Ali ◽  
Vinayagam Mohanavel ◽  
Subbiah Arungalai Vendan ◽  
Manickam Ravichandran ◽  
Anshul Yadav ◽  
...  
Keyword(s):  
Wear Rate ◽  
Aluminium Alloy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Weld Zone ◽  
Base Material ◽  
Matrix Composites ◽  
Wear Properties ◽  
Friction Stir ◽  
Behavioural Aspects

This study focuses on the properties and process parameters dictating behavioural aspects of friction stir welded Aluminium Alloy AA6061 metal matrix composites reinforced with varying percentages of SiC and B4C. The joint properties in terms of mechanical strength, microstructural integrity and quality were examined. The weld reveals grain refinement and uniform distribution of reinforced particles in the joint region leading to improved strength compared to other joints of varying base material compositions. The tensile properties of the friction stir welded Al-MMCs improved after reinforcement with SiC and B4C. The maximum ultimate tensile stress was around 172.8 ± 1.9 MPa for composite with 10% SiC and 3% B4C reinforcement. The percentage elongation decreased as the percentage of SiC decreases and B4C increases. The hardness of the Al-MMCs improved considerably by adding reinforcement and subsequent thermal action during the FSW process, indicating an optimal increase as it eliminates brittleness. It was seen that higher SiC content contributes to higher strength, improved wear properties and hardness. The wear rate was as high as 12 ± 0.9 g/s for 10% SiC reinforcement and 30 N load. The wear rate reduced for lower values of load and increased with B4C reinforcement. The microstructural examination at the joints reveals the flow of plasticized metal from advancing to the retreating side. The formation of onion rings in the weld zone was due to the cylindrical FSW rotating tool material impression during the stirring action. Alterations in chemical properties are negligible, thereby retaining the original characteristics of the materials post welding. No major cracks or pores were observed during the non-destructive testing process that established good quality of the weld. The results are indicated improvement in mechanical and microstructural properties of the weld.

scholarly journals Improvement in Hardness and Wear Behaviour of Iron-Based Mn–Cu–Sn Matrix for Sintered Diamond Tools by Dispersion Strengthening

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1774
Author(s):  
Elżbieta Cygan-Bączek ◽  
Piotr Wyżga ◽  
Sławomir Cygan ◽  
Piotr Bała ◽  
Andrzej Romański
Keyword(s):  
Wear Resistance ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Base Material ◽  
Wear Behaviour ◽  
Matrix Composites ◽  
Diamond Tools ◽  
Abrasion Wear ◽  
Sintered Diamond ◽  
Abrasive Stone

The work presents the possibility of fabricating materials for use as a matrix in sintered metallic-diamond tools with increased mechanical properties and abrasion wear resistance. In this study, the effect of micro-sized SiC, Al2O3, and ZrO2 additives on the wear behaviour of dispersion-strengthened metal-matrix composites was investigated. The development of metal-matrix composites (based on Fe–Mn–Cu–Sn–C) reinforced with micro-sized particles is a new approach to the substitution of critical raw materials commonly used for the matrix in sintered diamond-impregnated tools used for the machining of abrasive stone and concrete. The composites were prepared using spark plasma sintering (SPS). Apparent density, microstructural features, phase composition, Young’s modulus, hardness, and abrasion wear resistance were determined. An increase in the hardness and wear resistance of the dispersion-strengthened composites as compared to the base material (Fe–Mn–Cu–Sn–C) and the commercial alloy Co-20% WC provides metallic-diamond tools with high-performance properties.

Dry sliding wear of garnet reinforced zinc/aluminium metal matrix composites

Wear ◽  
2001 ◽  
Vol 251 (1-12) ◽  
pp. 1408-1413 ◽  
Author(s):  
G. Ranganath ◽  
S.C. Sharma ◽  
M. Krishna
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Sliding Wear ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Matrix Composites ◽  
Aluminium Metal

scholarly journals Processing and Property Evaluation of Nano Al2O3 Reinforced Copper- 5% Tin Composites for Bearing Applications

2019 ◽  
Vol 8 (2S8) ◽  
pp. 1027-1032
Keyword(s):  
Tensile Strength ◽  
Ultimate Tensile Strength ◽  
Yield Strength ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Copper Matrix ◽  
Matrix Composites ◽  
Wear Properties ◽  
Casting Technique ◽  
Tin Metal

Nano technology has fascinated the attention of numerous material scientists and design engineers. The nano scaled particulates incorporation exhibit many attractive and special properties. The inclusion of nano particulates into the copper matrix might augments the hardness, ultimate tensile strength and yield strength significantly increases, maintaining the ductility. In this paper, the nano Al2O3 reinforced copper - 5%tin- metal matrix composites were manufactured by stir casting technique and reinforcement is varied from 0wt. % to 9wt. % in ventures of 3wt. %. The nano composites are characterized in terms of their mechanical and wear properties. Results revealed that, the distribution of nano Al2O3 particulates is fairly uniform in copper - 5%tin metal matrix. As the level of reinforcement increases, hardness, yield strength, ultimate tensile strength, and wear resistance of the copper - 5%tin – nano Al2O3 metal matrix composites increases. The developed nano metal matrix composites may be an alternative material for bearing applications

Sign in / Sign up

Export Citation Format

Share Document