Dry Sliding Wear Behavior of Graphite Particulate Reinforced Al6061 Alloy Composite Materials

2014 ◽  
Vol 592-594 ◽  
pp. 170-174 ◽  
Author(s):  
Madeva Nagaral ◽  
V. Auradi ◽  
S.A. Kori
Keyword(s):  
Sliding Wear ◽  
Wear Behavior ◽  
Testing Machine ◽  
Matrix Alloy ◽  
Wear Testing ◽  
Dry Sliding Wear ◽  
Wear Volume ◽  
Wear Loss ◽  
Volumetric Wear ◽  
Al6061 Alloy

This present paper is an investigation made to study the un-lubricated sliding wear behavior of Al6061 alloy composites reinforced with graphite particulates of size 100-125 μm. The content of graphite in the alloy was varied from 6-9% in steps of 3 wt. %. The liquid metallurgy technique was used to fabricate the composites. A pin-on-disc wear testing machine was used to evaluate the volumetric wear loss, in which a hardened EN32 steel disc was used as the counter face. The results indicated that the volumetric wear loss of the composites was lesser than that of the Al6061 matrix alloy and it further decreased with the increase in graphite content up-to 6 wt.%. For composites containing 9 wt. % of graphite particulates, the volumetric wear loss was more than that of 6wt. % composites, but lesser than base matrix alloy. However, the material loss in terms of wear volume increased with the increase in load and sliding speed, both in case of composites and the alloy.

scholarly journals Differences in Dry Sliding Wear Behavior between Al–12Si–CuNiMg Alloy and Its Composite Reinforced with Al2O3 Fibers

Materials ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 1749 ◽  
Author(s):  
Qing Zhang ◽  
Jie Gu ◽  
Shuo Wei ◽  
Ming Qi
Keyword(s):  
Sliding Wear ◽  
Volume Fraction ◽  
Wear Behavior ◽  
Testing Machine ◽  
Matrix Alloy ◽  
Wear Testing ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
The Matrix ◽  
Pin On Disk

The dry sliding wear behavior of the Al-12Si-CuNiMg matrix alloy and its composite reinforced with Al2O3 fibers was investigated using a pin-on-disk wear-testing machine. The volume fraction of Al2O3 fibers in the composite was 17 vol.%. Wear tests are conducted under normal loads of 2.5, 5.0, and 7.5 N, and sliding velocities of 0.25, 0.50, and 1.0 m/s. Furthermore, the worn surfaces of the matrix alloy and the composite were examined using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). The results showed that the wear resistance of the composite was inferior to that of the matrix alloy, which could be attributed to the high content of reinforcement and casting porosities in the composite. Worn-surface analysis indicates that the dominant wear mechanisms of both materials were abrasive wear and adhesive wear under the present testing conditions.

Garnet and Al-flyash composite under dry sliding conditions

2017 ◽  
Vol 52 (17) ◽  
pp. 2281-2288 ◽  
Author(s):  
S Sivakumar ◽  
S Senthil Kumaran ◽  
M Uthayakumar ◽  
A Daniel Das
Keyword(s):  
Genetic Algorithm ◽  
Wear Rate ◽  
Process Parameters ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Testing Machine ◽  
Wear Testing ◽  
Wear Behaviour ◽  
Dry Sliding Wear ◽  
Dry Sliding

The dry sliding wear behaviour of LM 24 aluminum alloy composites reinforced with garnet particles was evaluated. Stir casting technique was used to fabricate the composites. A pin-on-disc wear-testing machine was used to evaluate the wear rate, in which an EN 24 steel disc was used as the counterface. Results indicated that the wear rates of the composites were lower than that of the matrix alloy and further decreased with the increase in garnet content. However, in both unreinforced and reinforced composites, the wear rate increased with the increase in load and the sliding speed. Increase in the applied load increased the wear severity by changing the wear mechanism from abrasion to particle cracking-induced delamination wear. It was found that with the increase in garnet content, the wear resistance increased monotonically. The observations have been explained using scanning electron microscopy analysis of the worn surfaces and the subsurface of the composites. In this work, the most influencing input and output parameters have been performed and the process parameters have been prioritized using genetic algorithm. Genetic algorithm is used to optimize the most influencing input as well as output process parameters. The practical significance of applying genetic algorithm to dry sliding wear behavior process has been validated by means of computing the deviation between predicted and experimentally obtained wear behavior of metal matrix composite.

The Oil Lubricated Sliding Wear Behavior of In Situ TiB2 Partical-Reinforced Al-10Sn Matrix Composites

2010 ◽  
Vol 97-101 ◽  
pp. 789-792 ◽  
Author(s):  
Guo Ming Cui ◽  
Xing Xia Li ◽  
Jian Min Zeng
Keyword(s):  
Sliding Wear ◽  
Wear Behavior ◽  
Testing Machine ◽  
Matrix Alloy ◽  
Wear Testing ◽  
Synthesis Process ◽  
Matrix Composites ◽  
Tib2 Particles ◽  
Lubricated Sliding

Al-10Sn matrix composites reinforced by TiB2 particles were fabricated by Mixed Salt Reaction in situ synthesis process. The oil lubricated sliding wear tests of composites and matrix alloy were conducted on a small thrust ring versus disc wear testing machine at room temperature under different applied loads and the wear surfaces were observed using SEM. The results indicate that the coefficient of friction, friction temperature, and wear weight loss increase with the increase of applied loads, but compared with matrix alloy, the composites exhibit better anti-friction property and higher wear resistance. The analysis of wear surface suggests that light ploughing is predominant for composites and matrix alloy at low loads, and ploughing is still predominant for composites at high loads, but adhesion and delamination are predominant for matrix alloy at high loads

DRY SLIDING WEAR BEHAVIOUR OF FLYASH REINFORCED ZA-27 ALLOY BASED METAL MATRIX COMPOSITES

2006 ◽  
Vol 20 (25n27) ◽  
pp. 4703-4708 ◽  
Author(s):  
S. C. SHARMA ◽  
M. KRISHNA ◽  
D. BHATTACHARYYA
Keyword(s):  
Fly Ash ◽  
Wear Rate ◽  
Sliding Wear ◽  
Testing Machine ◽  
Matrix Alloy ◽  
Ash Content ◽  
Wear Testing ◽  
Wear Behaviour ◽  
Wear Volume ◽  
The Matrix

In the present investigation, an attempt has been made to evaluate the wear rate of ZA-27 alloy composites reinforced with fly ash particles from 1 to 3 wt% in steps of 1 wt%. The compo-casting method has been used to fabricate the composites using Raichur fly ash of average size 3-5 microns. The wear specimens are tested under dry conditions using a pin-on-disc sliding wear testing machine with wear loads of 20-120 N in steps of 20 N, and the sliding distances in the range of 0.5 km to 2.5 km. The results indicate that the wear rate of the composites is less than that of the matrix alloy and it further decreases with the increase in fly ash content. However, the material loss in terms of wear rate and wear volume increases with the increase in load and sliding distance, both in the cases of composites and the matrix alloy. An increase in the applied load increases the wear severity by changing the wear mechanism from abrasion to particle-cracking induced delamination wear. It is found that with the increase in fly ash content, the wear resistance increases monotonically. The observations have been explained using scanning electron microscope (SEM) analysis of the worn surfaces of the composites.

scholarly journals Effect of Fiber Content on Abrasive Wear Behavior of Date Palm Leaf Reinforced Polyvinyl Pyrrolidone Composite

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Jyoti R. Mohanty ◽  
Sankar N. Das ◽  
Harish C. Das
Keyword(s):  
Date Palm ◽  
Wear Behavior ◽  
Normal Load ◽  
Testing Machine ◽  
Fiber Content ◽  
Polyvinyl Pyrrolidone ◽  
Wear Testing ◽  
Dry Sliding Wear ◽  
Wear Loss ◽  
Palm Leaf

The effect of fiber contents on wear behavior of date palm leaf reinforced polyvinyl pyrrolidone (PVP/DPL) composites has been experimentally investigated. The test samples with fillers in 10, 20, 30, and 40% based on weight of fibers were prepared using injection molding. The optimum fiber content (i.e., 26 wt%) for maximum mechanical strength of the composites was determined by regression analysis. The dry sliding wear tests were conducted for each composition at different sliding velocities (0.392, 0.471, and 0.549 m/s) and sliding distances (188, 254, and 376 m) by applying normal loads of 5, 10, 15, and 20 N using pin-on-disc wear testing machine. The specific wear rate, wear loss, and coefficient of friction were plotted against the normal load and sliding distance at all sliding velocities. The results reveal that incorporation of date palm leaf fibers leads to significant improvement in the wear resistance of composites up to optimum fiber content and then decreases as fiber content increases. Further, it is found that surface modification has significant effect on wear performance. Worn surfaces of some selected samples were studied by scanning electron microscopy to analyze the wear mechanism.

Statistical Modeling and Analysis of Dry Sliding Wear of SiC Reinforced Aluminum MMCs

2013 ◽  
Vol 1 (1) ◽  
pp. 57-70 ◽  
Author(s):  
S. Rajesh ◽  
A. Gopala Krishna ◽  
P. Rama Murthy Raju ◽  
M. Duraiselvam
Keyword(s):  
Taguchi Method ◽  
Sliding Wear ◽  
Wear Behavior ◽  
Matrix Alloy ◽  
Dry Sliding Wear ◽  
Wear Volume ◽  
Dry Sliding ◽  
Modeling And Analysis ◽  
Control Factors ◽  
The Impact

The dry sliding wear behavior of SiC reinforced aluminum alloy composites produced by liquid metallurgy was studied by means of a pin-on-disc type wear set up. Dry sliding wear tests were carried out on SiC reinforced Metal Matrix Composites (MMCs) and its matrix alloy sliding against a steel counterface. Different contact stresses, reinforcement percentages, sliding distances and sliding velocities were selected as control factors and the response selected was Wear Volume Loss (Y1) and Coefficient of Friction (Y2) to evaluate the dry sliding performance. An L25 orthogonal array was employed for the experimental design. Initially empirical relations were deduced for Y1 and Y2 in terms of control factors. Further, the optimal combination of the testing parameters was determined for Y1 and Y2 responses by implementing Taguchi method for the experimental observations. Finally, Analysis of Variance (ANOVA) was performed to know the impact of individual factors on Y1 and Y2. The results indicated that the sliding distance for Y1 and Y2 responses is found to be the most effective factor among the other control parameters on dry sliding wear. The study also shows that the Taguchi method is applicable to solve this type of problem with minimum number of trials compared with a full factorial design.

Influence of Liquid Paraffins in Crude Oil on the Friction and Wear Behaviors of the Progressing Cavity Pump`s Stator Rubber

2013 ◽  
Vol 300-301 ◽  
pp. 833-836
Author(s):  
Shi Jie Wang ◽  
Hao Lin ◽  
Xiao Ren Lv
Keyword(s):  
Crude Oil ◽  
Friction And Wear ◽  
Wear Behavior ◽  
Liquid Paraffin ◽  
Testing Machine ◽  
Wear Testing ◽  
Wear Loss ◽  
Oil Well ◽  
Butadiene Rubber ◽  
Better Than

The progressing cavity pump (PCP) always works in the waxy oil well. Therefore the research on the influence of various liquid paraffin contents in crude oil on the friction and wear behaviors of the progressing cavity pump`s stator is very important for choosing the best stator rubber and developing the service life of PCP. Wear behavior of nitrile butadiene rubber (NBR) and fluororubber (FKM) was investigated at room temperature using a reciprocating friction and wear testing machine under the various paraffin contents in crude oil (0%、10%、30%、50%、100%). The wear morphology of blend was analyzed through the stereomicroscope and the wear behavior of two blends was also discussed and compared. The results show that the wear resistance of FKM is better than that of NBR under the same paraffin content in crude oil; With the increase of the paraffin content, the wear and coefficient of friction also increase. When the paraffin content in crude oil is less than 30%, the wear loss of NBR and FKM are basically the same; When the paraffin content in crude oil is more than 30%, the wear loss of NBR is far more than that of FKM.

scholarly journals High Temperature Tribological Properties of Al2O3/NCD Films Investigated Under Ambient Air Conditions

Coatings ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 175
Author(s):  
Vitali Podgursky ◽  
Maxim Yashin ◽  
Taivo Jõgiaas ◽  
Mart Viljus ◽  
Asad Alamgir ◽  
...  
Keyword(s):  
Sliding Wear ◽  
Wear Behavior ◽  
Chemical Vapor ◽  
Atomic Layer ◽  
Ambient Air ◽  
Dry Sliding Wear ◽  
Wear Volume ◽  
Al2o3 Layer ◽  
The Coefficient Of Friction ◽  
Short Run

Comparative analysis of dry sliding wear behavior of nanocrystalline diamond (NCD) films and NCD films coated with a thin Al2O3 layer (Al2O3/NCD) is the main goal of the present study. Plasma-enhanced chemical vapor deposition (PECVD) and atomic layer deposition (ALD) methods were used to prepare the NCD and alumina films, respectively. Sliding wear tests were conducted at room temperature (RT), 300 and 450 °C in air. Independent of type of specimen, superlubricating behavior with the coefficient of friction (COF) in the range of 0.004‒0.04 was found for the tests at 300 °C. However, the COF value measured on the Al2O3/NCD films in the tests at 450 °C is lower than that for the NCD film. A relatively short run-in period and a stable COF value of about 0.15 were observed at this temperature for the Al2O3/NCD films. The width of the wear scars measured on the Al2O3/NCD films after the tests at 450 °C is significantly smaller in comparison with the NCD film. The apparent wear volume of the wear scar on the NCD film tested at 450 °C was noticeably higher than that on the Al2O3/NCD films.

Dry Sliding Wear Behavior of A356-ZrO2 Metal Matrix Composite

2015 ◽  
Vol 1125 ◽  
pp. 116-120
Author(s):  
Hamidreza Ghandvar ◽  
Saeed Farahany ◽  
Mohd Hasbullah Idris ◽  
Mohammadreza Daroonparvar
Keyword(s):  
Metal Matrix ◽  
Sliding Wear ◽  
Adhesive Wear ◽  
Wear Behavior ◽  
A356 Alloy ◽  
Matrix Alloy ◽  
Dry Sliding Wear ◽  
Dry Sliding ◽  
Friction Behavior ◽  
Wear And Friction

Dry sliding wear and friction behavior of cast A356 Al-Si alloy and composite containing 5wt. % ZrO2 particles were studied by means of a pins-on-disk apparatus over loads of 5N, 20N and a sliding speed of 0.628m/s. The experimental results showed that the composites exhibited a higher wear resistance in comparison to that of the unreinforced A356 alloy. The friction coefficient of tested materials increased with increasing applied load from 5 to 20 N. FESEM investigations revealed that the wear mechanism of the A356 matrix alloy changed from sever abrasive, adhesive wear into mild abrasion and adhesive wear with addition of 5wt. % ZrO2 reinforcement particles.

Microstructure, Mechanical and Wear Properties Study of Vanadium Carbide Particles Reinforced Iron Matrix Composite

2012 ◽  
Vol 476-478 ◽  
pp. 686-690 ◽  
Author(s):  
Jing Wang ◽  
Si Jing Fu ◽  
Bing Hua Jiang ◽  
Yi San Wang
Keyword(s):  
Electron Microscope ◽  
Matrix Composite ◽  
Vanadium Carbide ◽  
Wear Behavior ◽  
Testing Machine ◽  
Wear Testing ◽  
Dry Sliding Wear ◽  
Wear Properties ◽  
Iron Matrix ◽  
Composite Hardness

This study dealt with the processing, microstructure and wear behavior of vanadium carbide reinforced iron matrix composite. Powder technology combined with in situ synthesis was used to successfully fabricate the composite. The microstructure of the composite was characterized by X-ray diffraction, scanning electron microscope and transmission electron microscope. The microstructural study reveals that the round VC particles are distributed uniformly in the iron matrix, the interface between the iron matrix and VC is clean, and no interface precipitates is found. Dry-sliding wear behavior of VC-Fe composite was tested using MM-200 wear testing machine. The results indicate that the composite has excellent wear resistance, and microploughing and grooving are the dominant wear mechanisms for the composite. Hardness and bend strength of the composite are 62HRC and 990.1MPa, respectively.

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