Role of Different Range of Particle Size on Wear Characteristics of Al-Rutile Composites

The present article describes in detail the wear behavior of rutile-reinforced LM13 alloy
composite
Uploaded by: Suresh Kumar

86241 downloads 86338 Views 828KB Size

Recommend Documents


Wear characteristics of polymer based composites
Wear characteristics of polymer based composites - pdf for free download

INFLUENCE OF FIBER REINFORCEMENT AND ABRASIVE PARTICLE SIZE ON THREE-BODY ABRASIVE WEAR OF HYBRID FRICTION COMPOSITES
In the present study, enhancement of abrasion resistance of phenol formaldehyde (PF)resin based

Particle-size characteristics of Pyroclastic Tuffs
Particle-size characteristics of Pyroclastic Tuffs - pdf for free download

Ti particle-reinforced surface layers in Al: Effect of particle size on microstructure, hardness and wear
Ti particle-reinforced surface layers in Al: Effect of particle size on microstructure, hardness and wear - pdf for free download

The Wear of Alumina Matrix Particulate Composites at Different Environments
The Wear of Alumina Matrix Particulate Composites at Different Environments - pdf for free download

THE EFFECT OF WEAR TEST PARAMETERS ON TRIBOLOGICAL CHARACTERISTICS OF ALUMINUM BASED COMPOSITES
In this paper we examined the effect of contact pressure (applied load) and relative speed in braking

Experimental and numerical investigation of effect of particle size on particle distribution in particulate metal matrix composites
Experimental and numerical investigation of effect of particle size on particle distribution in particulate metal matrix composites - pdf for free download

Effects of random particle dispersion and size on the indentation behavior of SiC particle reinforced metal matrix composites
Effects of random particle dispersion and size on the indentation behavior of SiC particle reinforced metal matrix composites - pdf for free download

In vitro contact wear of dental composites
In vitro contact wear of dental composites - pdf for free download

Friction and Wear of Polymer and Composites
Friction and Wear of Polymer and Composites - pdf for free download

Story Transcript


This article was downloaded by: [Thapar University] On: 05 October 2014, At: 22:04 Publisher: Taylor & Francis Informa Ltd Registered in England and Wales Registered Number: 1072954 Registered office: Mortimer House, 37-41 Mortimer Street, London W1T 3JH, UK

Particulate Science and Technology: An International Journal Publication details, including instructions for authors and subscription information: http://www.tandfonline.com/loi/upst20

Role of Different Range of Particle Size on Wear Characteristics of Al-Rutile Composites a

b

a

b

Rama Arora , Suresh Kumar , Gurmel Singh & O. P. Pandey a

Department of physics, Punjabi University, Patiala, India

b

School of Physics and Materials Science, Thapar University, Patiala, India Accepted author version posted online: 03 Sep 2014.

To cite this article: Rama Arora, Suresh Kumar, Gurmel Singh & O. P. Pandey (2014): Role of Different Range of Particle Size on Wear Characteristics of Al-Rutile Composites, Particulate Science and Technology: An International Journal, DOI: 10.1080/02726351.2014.953648 To link to this article: http://dx.doi.org/10.1080/02726351.2014.953648

Disclaimer: This is a version of an unedited manuscript that has been accepted for publication. As a service to authors and researchers we are providing this version of the accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proof will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to this version also.

PLEASE SCROLL DOWN FOR ARTICLE Taylor & Francis makes every effort to ensure the accuracy of all the information (the “Content”) contained in the publications on our platform. However, Taylor & Francis, our agents, and our licensors make no representations or warranties whatsoever as to the accuracy, completeness, or suitability for any purpose of the Content. Any opinions and views expressed in this publication are the opinions and views of the authors, and are not the views of or endorsed by Taylor & Francis. The accuracy of the Content should not be relied upon and should be independently verified with primary sources of information. Taylor and Francis shall not be liable for any losses, actions, claims, proceedings, demands, costs, expenses, damages, and other liabilities whatsoever or howsoever caused arising directly or indirectly in connection with, in relation to or arising out of the use of the Content. This article may be used for research, teaching, and private study purposes. Any substantial or systematic reproduction, redistribution, reselling, loan, sub-licensing, systematic supply, or distribution in any form to anyone is expressly forbidden. Terms & Conditions of access and use can be found at http:// www.tandfonline.com/page/terms-and-conditions

Role of Different Range of Particle Size on Wear Characteristics of Al-Rutile Composites Rama Arora1, Suresh Kumar2, Gurmel Singh1, O. P. Pandey2 1

Department of physics, Punjabi University, Patiala, India 2School of Physics and Materials Science, Thapar University, Patiala, India

Downloaded by [Thapar University] at 22:04 05 October 2014

Address correspodence to O. P. Pandey, School of Physics and Materials Science, Thapar University, Patiala-147004, India E-mail: [email protected]

Abstract The present article describes in detail the wear behavior of rutile-reinforced LM13 alloy composite at elevated temperatures. Rutile particles in different amounts were reinforced into LM13 alloy by stir casting route. The microhardness measured at different areas indicates good interfacial bonding. Wear tests were conducted for composites containing rutile particles in 10wt.% and 15wt.% with variation in particle size (50-75µm and 106125µm). The presence of ceramic particle in the matrix improves the hardness, wear resistance, thermal stability as well as durability of the materials. The wear of composite at 200 ºC presented entirely different wear behavior mode than that at 250 ºC. The wear rate of fine size reinforced composite at 200 ºC at higher load was substantially lower than that of coarse size reinforced composite. A transition from mild-to-severe wear at higher load was observed above 150 ºC. The morphology of wear track and debris indicate that nucleation of cracks around the void on the interface of the particles is the main cause of surface damage.

KEYWORDS: Wear, Optical microscope, High temperature, Oxide layer

1

1.

INTRODUCTION

Aluminium matrix composites (AMCs) have emerged as advanced materials for several applications. The requirement of these composites has increased manifold in the space and automobile industries (Martinez et al. 1996). Tailor made properties of metal matrix composite (MMCs) e.g. high specific strength and stiffness, good wear resistance and

Downloaded by [Thapar University] at 22:04 05 October 2014

low thermal expansion coefficient are responsible for making the MMCs most suitable material for vide variety of applications in many fields (Kumar et al. 2013). AMCs display superior combination of properties as compared to the conventional monolithic metals and alloys. The ever-increasing demand for light weight, fuel efficient materials like aluminium alloys which exhibit good mechanical properties, better corrosion and wear resistance, low thermal coefficient of expansion has brought the revolution in the field of materials and also added new dimensions in the materials research (Bindumadhavan et al. 2001; Rajaram et al. 2010). They offer a large variety of mechanical properties depending upon the chemical composition of the matrix and reinforcement (Kumar et al. 2012). Usually these are reinforced with Al2O3, SiC, C, SiO2, BN, B4C in different matrix. The properties of particle-reinforced metal matrix composites produced by stir cast method is influenced by various parameters such as size, type and weight fraction of reinforcemedparticles and their distribution in cast metal matrix. The shape, size and amount of the particles of constituent materials also influence the properties of composites (Bindumadhavan et al. 2001; Rajaram et al. 2010; Hashim et al. 1999). These elements modify the Si morphology from coarse to fine, thus enhancing

2

the mechanical properties which is only attained by rapid solidification (Zhang and Alpas 1993; Kaur and Pandey 2010; Pandey and Ojha 1991).

In the present work the commercial aluminum alloy LM13 is used as the metal matrix where reinforcement of rutile is done. To the best of our knowledge limited work is reported on the reinforcement of rutile mineral (Dutta and Bourell 1990). However, no

Downloaded by [Thapar University] at 22:04 05 October 2014

report exists on size variation of rutile reinforced composite with variation in temperature. The use of minerals has also helped in reducing the operating cost thus, facilitating the mass production of cheaper alternative materials with reproducible properties. Considering all these facts, the present study is aimed to analyze the effect of amount and size variation of reinforced particles in the aluminum alloy matrix. Our study is mainly focused on investigating the wear behaviour of rutile reinforced LM13 alloy composite at elevated temperatures. The effect of variation in particle size and their amount on the mechanical properties and wear resistance of the rutile reinforced composite at elevated temperature is reported in this work.

2.

EXPERIMENTAL

In the present study well known piston alloy LM13 is used as matrix material and rutile mineral as reinforcement. Wear tests were conducted for composites containing rutile particles in 10wt.% and 15wt.% with variation in particle size (50-75µm and 106125µm). The composite was made by stir casting route. The detailed description of the stir casting process is given in our earlier work (Kumar et al. 2013). Required quantity of LM13 alloy was taken in a graphite crucible and melted in an electric furnace. This

3

molten alloy was stirred using a graphite impeller at a speed of 630 rpm. Rutile particles prior to mixing were preheated at 400°C to drive off the moisture. After the formation of vortex in the melt, the particles were charged inside the vortex at the rate of 20-25 g/min. into the melt during stirring by impeller with the help of funnel kept on top of the vortex. After mixing of particles the melt slurry was transferred in a metal mold and allowed to solidify at room temperature. Dry sliding wear tests of the reinforced alloys were

Downloaded by [Thapar University] at 22:04 05 October 2014

performed using a pin on- disc wear and friction monitor. The wear tests (Model TR20CH-400, Ducom, Bangalore, INDIA) of specimen from each set of composite have been conducted up to 3000 m of sliding distance at a constant sliding speed of 1.6 m/s at low (1kg) and high (5kg) loads. Wear rates for the pin are calculated from the volume of material lost during the test. The microstructural analysis has been done with the help of scanning electron microscope (SEM) at different magnifications (JEOL, JSM-6510LV, Japan).

3.

RESULTS AND DISCUSSION

3.1 Hardness Table 1 shows the effects of size and reinforcement amount of rutile particles on the hardness of the composites. Hardness was observed to increase with increasing amount of rutile particles and also with decreasing particle size of the reinforced particulates. The improvement in hardness of the composite may result from good interfacial bonding and also due to the generation of high dislocation density because of hindrance offered by the particles in dislocation movement. Moreover, variation in coefficient of thermal expansion of rutile particles and aluminum matrix is also responsible for it (Dutta and

4

Bournell 1990). Reinforced particles show high hardness which decreases as we move a...

Life Enjoy

When life gives you a hundred reasons to cry, show life that you have a thousand reasons to smile

Get in touch

Social

© Copyright 2013 - 2019 DOCKUN.COM - All rights reserved.