Effect of Hardness on the Wear Behavior of Hybrid Metal Matrix Composites

2014 ◽  
Vol 984-985 ◽  
pp. 536-540
Author(s):  
K. Umanath ◽  
S.T. Selvamani ◽  
K. Palanikumar ◽  
T. Raphael
Keyword(s):  
Hybrid Composites ◽  
Wear Behavior ◽  
Aerospace Industry ◽  
Matrix Composites ◽  
Automotive Applications ◽  
Power Train ◽  
Advanced Material ◽  
Automobile Use ◽  
Material Wear ◽  
General Concern

Aerospace industry and automobile industries are enhanced performance necessary for materials with better qualities compare to conservative materials. In automotive areas, this is predominantly factual for power train employed as conflicting to body application. For each kind of appliance, description such as hardness of the material, wear resistance, temperature withstands ability, plasticity, fracture, fatigue strength, etc. It must be as high as possible, while parameters such as density and cost must be minimized; the latter is of general concern for automobile use and relatively inexpensive light aircraft. Because of their low density, the light metals based on aluminum, magnesium, and titanium are particularly attractive for both types of applications. In this paper, advanced material of Al6061/SiC/Al2O3hybrid composites is discussed, followed by a consideration of advanced material specifically in aerospace and automotive applications. Processing the lightweight metal, with enhanced hardness properties is presented.

scholarly journals Comparison of mechanical and wearing properties between LM13 matrix and Stir cast LM13/B4C/Gr hybrid composites of various composition

2017 ◽  
Vol 7 (1.1) ◽  
pp. 193
Author(s):  
M.H. Faisal ◽  
S. Prabagaran ◽  
T.S. Vishnu
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Boron Carbide ◽  
Hybrid Composites ◽  
Wear Behavior ◽  
Testing Machine ◽  
Matrix Composites ◽  
Hardness Tester ◽  
Negative Effect ◽  
Carbide Particles

Aluminium/graphite composites are the need of modern times for addressing the fuel saving issues. The graphite in such composites act as solid lubricant and it reduce external fuel requirements. But such composites are having degraded mechanical properties due to the graphite content in composite. In order to solve the negative effect of graphite on mechanical properties of LM13/Gr self-lubricating composite this study was conducted to find out the mechanical properties of LM13/B4C/Gr Metal Matrix Composites. Boron carbide was selected as reinforcement because of its better reinforcement properties compared to alumina and silicon carbide. The properties of the hybrid composites were compared with the LM13/Gr self-lubricating composite to study the enhancement in mechanical properties that has been caused by the boron carbide particles. Using computerized universal testing machine and rock-well hardness tester mechanical properties such as hardness and tensile strength were tested. Pin on disk testing machine was used to analyse the wear behavior. The test results indicates that by raising weight % of boron carbide particles in the LM13, tensile strength and hardness of the hybrid composites was increased compared to self-lubricating composite accompanied by better tribological properties.

Aluminum/SiC/Nickel-Coated Graphite Hybrid Composites and their Wear Behavior

2012 ◽  
Vol 509 ◽  
pp. 10-11 ◽  
Author(s):  
M.L. Ted Guo ◽  
C.Y.A. Tsao
Keyword(s):  
Wear Resistance ◽  
High Performance ◽  
Solid Lubricant ◽  
Hybrid Composites ◽  
Coefficient Of Thermal Expansion ◽  
Wear Behavior ◽  
Matrix Composites ◽  
New Materials ◽  
Wear Process ◽  
Specific Strength

New materials for high performance tribological applications have been one of the major incentives for the development of aluminum-based metal matrix composites (MMCs). MMCs have received attention because of their improved specific strength, good wear resistance, higher thermal conductivity than ceramics, lower coefficient of thermal expansion, etc. Traditionally, lubricant externally added plays an important role in reducing wear in the application of wear resistance materials. However, self-lubricating materials are more desired than materials to which lubricant needs to be applied periodically, especially for wear parts difficult to be accessed, since solid lubricant contained in the former can be released automatically during the wear process and reduces wear.

Microstructural evolution in ultrasonically processed in situ AZ91 matrix composites and their mechanical and wear behavior

2014 ◽  
Vol 53 ◽  
pp. 475-481 ◽  
Author(s):  
Sachin Vijay Muley ◽  
Satya Prakash Singh ◽  
Piyush Sinha ◽  
P.P. Bhingole ◽  
G.P. Chaudhari
Keyword(s):  
Microstructural Evolution ◽  
Wear Behavior ◽  
Matrix Composites

Si3N4/Graphene binary particles reinforced hybrid titanium composites and their characterization

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Tugba Mutuk ◽  
Mevlüt Gürbüz
Keyword(s):  
Hybrid Composite ◽  
Hybrid Composites ◽  
Graphene Nanoplatelets ◽  
Powder Metallurgy Method ◽  
Matrix Composites ◽  
Compressive Behavior ◽  
Titanium Matrix ◽  
Wear Properties ◽  
Titanium Matrix Composites ◽  
Matrix Density

Abstract This study reports on silicon nitride (Si3N4) and graphene nanoplatelets binary powder reinforced hybrid titanium composites obtained by a powder metallurgy method. Si3N4 powder was added at 3 wt.% and graphene nanoplatelets were added in various amounts (0.15, 0.30, 0.45, 0.60 wt.%) in the titanium matrix. Density, micro-Vickers hardness, compressive behavior, wear properties and microstructure of the hybrid composites were evaluated. Addition of different percentages of graphene nanoplatelets and 3 wt.% Si3N4 to the titanium matrix composites significantly enhanced mechanical properties. The highest hardness (634 HV) and compressive strength (1458 MPa) values were measured for 0.15 wt.% graphene nanoplatelets and 3 wt.% Si3N4 added titanium hybrid composite. The lowest mass loss and wear rate (Δm = 4 mg, W = 6.1×10–5 mm3 (N m)–1) values were measured for the same 0.15 wt.% graphene nanoplatelets and 3 wt.% Si3N4 added titanium hybrid composite compared with pure Ti.

Effect of reinforcements on graphite/titania/aluminium nanohybrid composites

2021 ◽  
pp. 135065012110477
Author(s):  
Kishor Kumar Reddy Yendapalli ◽  
Althaf Hussain Shaik ◽  
Vamsee Krishna Reddy Narahari ◽  
Sumit Pramanik ◽  
Shubrajit Bhaumik
Keyword(s):  
Surface Properties ◽  
Hybrid Composites ◽  
Wear Test ◽  
Aluminium Matrix ◽  
Aluminium Content ◽  
Matrix Composites ◽  
Nanohybrid Composite ◽  
New Compounds ◽  
Sintering Condition ◽  
Wear Tests

Aluminium alloys and their composites are often used in aerospace, automobile and biomedical applications. However, mechanical and surface properties of those alloys have not reached up to the expectation. This investigation focused to improve the wear resistance properties along with mechanical and surface properties of aluminium matrix composites. Here, novel aluminium matrix nanohybrid composites were developed using titanium oxide and graphite as reinforced via powder metallurgical route. The sintered samples were analysed by different tests such as, hardness, surface roughness, wear tests and other structural analyses. The obtained results showed that some new compounds formed during sintering were responsible for improved mechanical and surface properties for different applications. The wear test showed that there was rapid worn out of graphite from the composites having aluminium content more than 50 wt% due to the higher content of graphite (10 and 20 wt%, respectively). In addition, due to the increase of porosity in the different hybrid composites, there was an increase in coefficient of friction observed in some materials. The aluminium nanohybrid composite having 40 wt% titania and 10 wt% graphite showed best results compared with others. Therefore, the optimized hybrid composites with proper sintering condition would significantly help to get suitable structural, mechanical as well as tribological properties for many advanced applications.

Dry Sliding Wear Behavior of 2218 Al-Alloy-Al2O3(TiO2) Hybrid Composites

2017 ◽  
Vol 140 (2) ◽  
Author(s):  
Vineet Tirth
Keyword(s):  
Wear Rate ◽  
Sliding Wear ◽  
Hybrid Composites ◽  
Wear Behavior ◽  
Dry Sliding Wear ◽  
Aged Alloy ◽  
Dry Sliding ◽  
Al Alloy ◽  
Mathematical Relationship ◽  
Sliding Distance

AA2218–Al2O3(TiO2) composites are synthesized by stirring 2, 5, and 7 wt % of 1:2 mixture of Al2O3:TiO2 powders in molten AA2218 alloy. T61 heat-treated composites characterized for microstructure and hardness. Dry sliding wear tests conducted on pin-on-disk setup at available loads 4.91–13.24 N, sliding speed of 1.26 m/s up to sliding distance of 3770 m. Stir cast AA2218 alloy (unreinforced, 0 wt % composite) wears quickly by adhesion, following Archard's law. Aged alloy exhibits lesser wear rate than unaged (solutionized). Mathematical relationship between wear rate and load proposed for solutionized and peak aged alloy. Volume loss in wear increases linearly with sliding distance but drops with the increase in particle wt % at a given load, attributed to the increase in hardness due to matrix reinforcement. Minimum wear rate is recorded in 5 wt % composite due to increased particles retention, lesser porosity, and uniform particle distribution. In composites, wear phenomenon is complex, combination of adhesive and abrasive wear which includes the effect of shear rate, due to sliding action in composite, and abrasive effect (three body wear) of particles. General mathematical relationship for wear rate of T61 aged composite as a function of particle wt % load is suggested. Fe content on worn surface increases with the increase in particle content and counterface temperature increases with the increase in load. Coefficient of friction decreases with particle addition but increases in 7 wt % composite due to change in microstructure.

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