Correlation of Reinforced Ceramicparticle’s Nature and Size with Microstructure and Wear Behavior of Al-Si Alloy Composite

2012 ◽  
Vol 585 ◽  
pp. 564-568 ◽  
Author(s):  
Vipin Sharma ◽  
Suresh Kumar ◽  
O.P. Pandey
Keyword(s):  
Wear Resistance ◽  
Wear Behavior ◽  
Eutectic Silicon ◽  
Microstructural Analysis ◽  
Sand Particle ◽  
Wear Properties ◽  
Alloy Matrix ◽  
Aluminium Matrix Composite ◽  
Zircon Sand ◽  
Sand Particles

The present study aims to analyze the effect of particle size on nature of microstructural features and wear behavior of composite. Stir casting route has been adopted for the fabrication of aluminium matrix composite using Al-Si LM13 piston alloy. Composites have been developed by varyig the size of zircon sand particles while keeping the SiC particles of same size. Microstructural analysis shows that SiC has a pronounced effect on the microstructure and eutectic silicon refinement. Microstructure evolution is mainly governed by the thermal conductivity difference between two phase’s i.e. ceramic particle and alloy matrix. The dendritic ripening is also observed in the composites in microstructural study. EDS analysis reveals the formation of mechanically mixed layer in the composites enabling better wear properties. Fine size zircon sand particle reinforced composite exhibits better wear resistance than coarse particle at same weight percentage of reinforcement. The SiC reinforcement is better as compared to zircon sand particles for enhancing wear resistance of the composite. Silicon carbide refines the eutectic silicon whereas zircon sand provides good interfacial bonding. SEM examination of worn surface and wear debris shows that the various wear mechanism are involved in material removal.

scholarly journals Investigation of Mechanical and Wear Properties of LM24/Silicate/Fly Ash Hybrid Composite Using Vortex Technique

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
B. R. Senthil Kumar ◽  
M. Thiagarajan ◽  
K. Chandrasekaran
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Fly Ash ◽  
Hybrid Composite ◽  
Hybrid Composites ◽  
Wear Behavior ◽  
Wear Properties ◽  
Alloy Matrix ◽  
Pin On Disc ◽  
Wear Reduction

This work has investigated to find the influence of silicate on the wear behavior of LM 24/4 wt.% fly ash hybrid composite. The investigation reveals the effectiveness of incorporation of silicate in the composite for gaining wear reduction. Silicate particles with fly ash materials were incorporated into aluminum alloy matrix to accomplish reduction in wear resistance and improve the mechanical properties. The LM24/silicate/fly ash hybrid composite was prepared with 4 wt.% fly ash particles with 4, 8, 12, 16, 20, and 24 wt.% of silicate using vortex technique. Tribological properties were evaluated under different load (15, 30, 45, 60, and 75 N); sliding velocity (0.75, 1.5, 2.25, and 3 m/sec) condition using pin on disc apparatus and mechanical properties like density, hardness, impact strength, and tensile strength of composites were investigated. In addition, the machining of the aluminum hybrid composite was studied using Taguchi L9orthogonal array with analysis of variance. The properties of the hybrid composites containing 24 wt.% silicates exhibit the superior wear resistance and mechanical properties.

Process optimization using grey relational analysis in dry sliding wear behavior on SiC/B4C/Talc reinforced Al 6061 hybrid metal matrix composite

2021 ◽  
Vol 118 (6) ◽  
pp. 614
Author(s):  
Chellamuthu Ramesh Kumar ◽  
Subramanian Baskar ◽  
Ganesan Ramesh ◽  
Pathinettampadian Gurusamy ◽  
Thirupathy Maridurai
Keyword(s):  
Wear Resistance ◽  
Metal Matrix ◽  
Wear Behavior ◽  
Base Alloy ◽  
Specific Weight ◽  
Dry Sliding Wear ◽  
Wear Properties ◽  
Weight Percentage ◽  
Casting Technique ◽  
Grey Relational

In this research, investigations were carried out on Al6061 base alloy with the changing weight percentage of silicon carbide (SiC) and boron carbide (B4C) with keeping the amount of talc constant. The main objective of this present study was to improve the wear resistance of aluminum alloy using SiC/B4C/talc ceramic particles using stir-casting technique and how the eco-friendly talc content influencing the solid lubricity during the abrasion process. The experiments were conducted via orthogonal array of L27 using Taguchi’s method. The optimum value along with the coefficient of friction was obtained on the basis of grey relational equations and ANOVA, which helped in analysis of most influential input parameters such as applied load, sliding speed, sliding distance and percentage of reinforcement. Conformation tests were performed for the purpose of validation of the experimental results. The specimens were analyzed using scanning electron microscope (SEM) with EDX for micro structural studies. The SiC, B4C and talc presence in the composite helped to improve the mechanical properties, according to the results. The presence of solid lubricant talc as reinforcement to the aluminum hybrid composite reduced the wear properties and decreased the co-efficient friction. These wear resistance improved aluminum metal matrix composites could be used in automobile, defense and domestic applications where high strength and wear resistance required with lesser specific weight.

Mechanical and Wear Behavior of Al7075 - Graphite Self-Lubricating Composite Reinforced by Nano-WO3 Particles

2020 ◽  
Vol 1002 ◽  
pp. 151-160 ◽  
Author(s):  
Anmar D. Mahdi ◽  
Saif S. Irhayyim ◽  
Salah F. Abduljabbar
Keyword(s):  
Compressive Strength ◽  
Friction Coefficient ◽  
Wear Rate ◽  
Wear Behavior ◽  
Microstructural Analysis ◽  
Wear Test ◽  
High Strength ◽  
Hybrid Nanocomposites ◽  
Dry Sliding Wear ◽  
Alloy Matrix

Al7075 hybrid nanocomposites considered one of the most material utilized in modern engineering applications that required a combination of superior properties such as lightweight, high strength, excellent corrosion resistance, and high thermal conductivity. In the current study, Al7075 – 5 vol % graphite self-lubricating composite was reinforced by 0, 1.5, 2.5, 3.5, and 4.5 vol % WO3 nanoparticles in order to study the microstructural, mechanical, and wear characteristics. The classical powder metallurgy route was employed to fabricate the hybrid nanocomposites specimens. The microstructural analysis of the nanocomposites was characterized by utilizing a Field Emission Scanning Electron Microscope (FESEM) and Energy-Dispersive X-ray (EDX) analyses. Mechanical properties such as micro-hardness and diametral compressive strength were studied. Dry sliding wear test was performed under the various loads of 10, 15, 20, and 25 N at a sliding distance and sliding speed of 1810 m and 1.5 m/s, respectively. Results have revealed that the microhardness and diametral compressive strength considerably improved by increasing the WO3 content until 3.5 vol % and then slightly decreased. Besides, both the values of the wear rate and friction coefficient gradually reduced by increment the reinforcement content up to 3.5 vol % and then suddenly increases for all the applied loads. Nevertheless, the wear rate and friction coefficient were correlated positively with the applied loads. From the results obtained, graphite as solid lubricating material with WO3 nanoparticles was successfully combined into the Al7075 alloy matrix. The optimum mechanical and wear performance of the hybrid nanocomposite were revealed at 3.5 vol % content of WO3 nanoparticles.

scholarly journals Microstructure, Mechanical Properties and Wear Behavior of High-Velocity Oxygen-Fuel (HVOF) Sprayed (Cr3C2-NiCr+Al) Composite Coating on Ductile Cast Iron

Coatings ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 840 ◽  
Author(s):  
Marzanna Ksiazek ◽  
Lukasz Boron ◽  
Adam Tchorz
Keyword(s):  
Cast Iron ◽  
Electron Microscope ◽  
High Velocity ◽  
Bending Strength ◽  
Wear Behavior ◽  
Ductile Cast Iron ◽  
Wear Behaviour ◽  
Wear Properties ◽  
Alloy Matrix ◽  
X Ray

In the present work Cr3C2-NiCr powder containing Al particles was deposited on ductile cast iron with high-velocity oxy-fuel (HVOF) thermal spray coating technique. An investigation was conducted to determine the role of Al particles in the Cr3C2-NiCr coating produced with HVOF technique on microstructure, mechanical and wear properties in a system Cr2C3-NiCr coating/ductile cast iron. The microstructure of the HVOF-sprayed Cr3C2-NiCr+Al coating was characterized by light microscopy, X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and energy dispersive X-ray spectroscopy (EDS). Microstructure analysis reveals the formation of coating with low porosity, good adhesion to the substrate and dense structure with irregularly shaped particles of Al arranged in strips and finely fragmented Cr3C2 particles embedded in a nanocrystalline Ni-Cr alloy matrix. In addition, the results were discussed in reference to examination of bending strength considering cracking and delamination in the system of (Cr3C2-NiCr+Al)/ductile cast iron as well as microhardness and wear resistance of the coating. It was found that the addition of Al particles significantly increased resistance to cracking and wear behaviour in the studied system.

Phase, microstructure, and wear behavior of Al2O3-reinforced Fe–Si alloy-based metal matrix nanocomposites

2019 ◽  
Vol 234 (3) ◽  
pp. 467-480
Author(s):  
Akash Saxena ◽  
Neera Singh ◽  
Bhupendra Singh ◽  
Devendra Kumar ◽  
Kishor Kumar Sadasivuni ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Metal Matrix ◽  
Alloy Composition ◽  
Wear Behavior ◽  
High Hardness ◽  
Industrial Applications ◽  
High Wear Resistance ◽  
Wear Properties ◽  
Metal Matrix Nanocomposites ◽  
Matrix Nanocomposites

In the present work, phase, microstructure, and wear properties of Al2O3-reinforced Fe–Si alloy-based metal matrix nanocomposites have been studied. Composites using 2 wt.% and 5 wt.% of Si and rest Fe powder mix were synthesized via powder metallurgy and sintered at different temperature schedules. Iron–silicon alloy specimens were found to have high hardness and high wear resistance in comparison to pure iron specimens. Addition of 5 wt.% and 10 wt.% alumina reinforcement in Fe–Si alloy composition helped in developing iron aluminate (FeAl2O4) phase in composites which further improved the mechanical properties i.e. high hardness and wear resistance. Formation of iron aluminate phase occurs due to reactive sintering between Fe and Al2O3 particles. It is expected that the improved behavior of prepared nanocomposites as compared to conventional metals will be helpful in finding their use for wide industrial applications.

Effect of Varying Wt% of TiC on Mechanical and Wear Properties of RZ5-TiC In-Situ Composite

2018 ◽  
Vol 8 (2) ◽  
pp. 45-56 ◽  
Author(s):  
Deepak Mehra ◽  
M.M. Mahapatra ◽  
S. P. Harsha
Keyword(s):  
Wear Resistance ◽  
Wear Behavior ◽  
Wear Test ◽  
X Ray Diffraction ◽  
Wear Properties ◽  
X Ray ◽  
Tic Particle ◽  
Mechanical And Microstructural Properties ◽  
Sliding Distance

The purpose of this article is to enhance the mechanical properties and wear resistance of the RZ5 alloy used in the aerospace application by adding TiC particles. The present study discusses processing of in-situ RZ5-TiC composite fabricated by self-propagating high temperature (S.H.S.) method and its wear behavior. The effects of TiC particle on mechanical and microstructural properties of the composite are studied. The wear test is performed by varying the sliding distance and applied load. The composite is characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The results exhibited the properties like strength and hardness of RZ5-10wt%TiC composite has been increased considerably, while grain size is decreased as compared to the RZ5 alloy. The fractography indicated mixed mode (quasi-cleavage and ductile feature) failure of the composites. The wear results showed improvement in wear resistance of the composite. The FESEM showed dominate wear mechanisms are abrasion, ploughing grooves.

Influences of Solution Treatment, Deformation Strain, and Nanometric Al2O3 Particulate on Dry Wear Properties for Nanometric Al2O3 Particulate Reinforced Al Alloy Matrix Composites Manufactured by Casting

2012 ◽  
Vol 628 ◽  
pp. 3-6
Author(s):  
Yong Biao Yang ◽  
Zhi Min Zhang ◽  
Xing Zhang
Keyword(s):  
Wear Resistance ◽  
Solution Treatment ◽  
Solution Temperature ◽  
Al Alloy ◽  
Matrix Composites ◽  
Wear Properties ◽  
Alloy Matrix ◽  
Deformation Strain ◽  
Particulate Reinforced ◽  
Al Matrix

The influences of solution treatment, deformation strain, and nanometric Al2O3 particulate on dry wear properties for nanometric Al2O3 particulate reinforced Al alloy matrix Composites manufactured by casting were investigated. The result showed that both the wear resistance of AL matrix and the composites increased rapidly with increasing solution temperatures. The wear resistance increased slightly with increasing deformation strain for the composites. The wear resistance of the composites is higher than the AL matrix after the same deformation and heat treatment. Microstructure observation revealed that the grain sizes of the composites increased with increasing solution temperature and decreased with more severe deformation. Abrasive wear was the main wear mechanism both for the AL matrix and the composites.

Properties of Semisolid Parts: Comparison with Conventional and Innovative Manufacturing Technologies

2022 ◽  
Vol 327 ◽  
pp. 197-206
Author(s):  
Pietro Tonolini ◽  
Annalisa Pola ◽  
Lorenzo Montesano ◽  
Marialaura Tocci ◽  
Marcello Gelfi ◽  
...  
Keyword(s):  
Wear Behavior ◽  
Microstructural Analysis ◽  
Damage Mechanism ◽  
Wear Properties ◽  
Heat Treated ◽  
Production Technologies ◽  
Manufacturing Technologies ◽  
Pin On Disk ◽  
Pressure Die Casting ◽  
The Relationship

In this paper, wear properties of samples manufactured using thixocasting were compared with those of components obtained using low-pressure die-casting and additive manufacturing in order to assess the relationship between material performance and production technologies, both conventional and innovative. The investigated items were made with AlSi7Mg alloy. First, microstructural analysis and hardness measurements were carried out. Subsequently, pin-on-disk wear tests were performed. Wear behavior of the samples was studied considering both coefficient of friction and wear rate, while the damage mechanism was analyzed by observation of the worn paths using scanning electron microscope, correlating the behavior to the specific microstructure. In addition, the effect of selected heat-treated conditions, relevant for real applications, on wear properties was also evaluated.

MICROSTRUCTURES AND WEAR PROPERTIES OF THE COMPOSITE COATINGS LASER-FABRICATED ON TITANIUM ALLOY Ti-6Al-4V

2005 ◽  
Vol 12 (03) ◽  
pp. 443-447 ◽  
Author(s):  
Y. S. TIAN ◽  
C. Z. CHEN ◽  
D. Y. WANG ◽  
Q. H. HUO ◽  
T. Q. LEI
Keyword(s):  
Wear Resistance ◽  
Titanium Alloy ◽  
Composite Coatings ◽  
Microstructural Analysis ◽  
Laser Alloying ◽  
Wear Properties ◽  
Titanium Carbides

Composite coatings containing titanium carbides and borides are produced on the surface of Ti-6Al-4V alloy by laser alloying technique. Microstructural analysis shows that coarse bulk-like and dendritic compounds are formed when alloyed with boron and carbon, separately. However, fine and uniformly distributed dendritic compounds are produced when alloyed with boron and carbon mixed powders. With microhardness of 1450–1600 HV 0.1, the coatings have excellent wear resistance compared with as-received sample.

Wear Behavior of Fe-Based Coating Fabricated by Plasma Thermal Spraying

2010 ◽  
Vol 150-151 ◽  
pp. 881-884
Author(s):  
Chao Ping Jiang ◽  
Jian Zhong Pei ◽  
Jian Min Hao
Keyword(s):  
Wear Resistance ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Composite Coatings ◽  
Thermal Spraying ◽  
Amorphous Structure ◽  
Air Plasma ◽  
Wear Properties ◽  
Amorphous Content ◽  
Nanocrystalline Composite

The Fe-based amorphous coatings were prepared by Air plasma thermal spraying. X-ray diffraction results show that the coating fabricated at current of 300A has an amorphous structure. The amorphous nanocrystalline composite coatings were obtained at current more than 300A. The friction and wear properties of the coatings were investigated in Ml-10 friction and wear tester at dry friction condition. The results show that the amorphous content is the main influencing factors to wear resistance of coating. The density of coating is another reason to affect the wear resistance of amorphous nanocrystalline composite coating.

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