Qualification: 
Ph.D
s_ilangovan@cb.amrita.edu

Dr. Ilangovan S. currently serves as Associate Professor at Department of Mechanical Engineering, School of Engineering, Coimbatore Campus. 

Area of Research

  • Non-Ferrous alloy development using casting processes especially spinodal alloys.
  • Study of Mechanical properties, Microstructure analysis, Friction & Wear analysis.
  • Optimization technique using DOE.
  • Heat treatment of alloys.

Publications

Publication Type: Journal Article

Year of Publication Publication Type Title

2016

Journal Article

Dr. Ilangovan S. and R. Sellamuthu, “Measurement of the variation of mechanical properties with aging temperatures for sand cast Cu-5Ni-5Sn alloy”, Journal of Engineering Science and Technology, vol. 11, pp. 1609-1619, 2016.[Abstract]


The purpose of the investigation is to study the mechanical properties of copper-nickel-tin spinodal alloy and its effect with respect to aging temperatures using sand casting process without cold work. An alloy of Cu-5Ni-5Sn was melted in a crucible furnace under argon atmosphere and cast into sand moulds. Homogenized and solution treated specimens were aged at 300 °C, 350 °C, and 400 °C for different period of time. Specimens were tested for its mechanical properties such as micro-hardness, yield stress, tensile stress and percent elongation. It was found that the peak hardness increases with aging temperatures up to 400 °C. Yield and tensile stresses are proportional to hardness of the alloy. Percent elongation decreases with increase in hardness and stresses. Incremental yield stress increases with increase in aging temperature of the alloy. Also, the yield stress of the alloy is found to increase two times than that of traditional cast bronze alloys. More »»

2016

Journal Article

Dr. Ilangovan S., Shanmugasundaram, A., and Arul, S., “Influence of Specimen Temperature on Wear Characteristics of AA6063 Aluminium Alloy”, Journal of Surface Science and Technology, vol. 32, pp. 93–98, 2016.[Abstract]


Dry sliding wear performance of aluminium alloy (AA 6063) was studied by varying applied normal load, sliding velocity and varying specimen temperatures from 50 to 150 °C. The results signify that the wear increases as the load increases from 10 to 20 N, while it decreases when the sliding velocity of the specimen increases from 1 to 2 m/s at room temperature. As the temperature of the specimen increases, the wear rate increases marginally at initial stage and then increases rapidly for a constant load and velocity. The specific wear was found to be decreased when load and sliding velocity were increased. However, in the case of varying specimen temperature condition, particularly at elevated temperature of the specimen, the specific wear showed an increasing trend. Coefficient of friction (COF) was nearly stable to both load and velocity, but it is marginally vary when temperature of the specimen increases from 50 to 100 °C and it decreases rapidly from 100 to 150 °C.

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2016

Journal Article

Dr. Ilangovan S., ,, .Sivasankaran, S., and Alaboodi, A. S., “Experimental Investigation on Mechanical, Tribological and Machining Behavior of (Cu-10Zn)100-x – x wt.% Al2O3 Nanocomposite Prepared by Mechanical Alloying and Hot-Pressing”, Journal of Materials and Design, vol. 688, pp. 518-526, 2016.

2016

Journal Article

Dr. Ilangovan S., Arul, S., and Shanmugasundaram, A., “Effect of Zn and Cu Content on Microstructure, Hardness and Tribological Properties of Cast Al-Zn-Cu Alloys”, International Journal of Engineering Research in Africa, vol. 27, pp. 1–10, 2016.[Abstract]


Microstructure, micro-hardness and wear properties of Aluminium-Zinc-Copper (Al-Zn-Cu) alloys of various chemical compositions are investigated. Stir casting process is used to prepare the various alloy compositions with permanent metallic mould. Six different alloy compositions were developed by varying Zn and Cu content in aluminium matrix. The wear and frictional properties were studied using Pin-on-Disc wear tester in dry sliding condition under normal atmosphere. The developed Al-Zn-Cu alloy has inter-metallic stable $\texttheta$ (CuAl2) phase in the inter-dendrite region and is due to the addition of Cu from 1 to 5 wt. % in 60Al-(40-x) Zn alloy. When the Cu composition increases up to 2 wt %, the corresponding hardness increases significantly and is due to the formation of Cu-rich $\texttheta$ phase and also due to the solid solution hardening of Cu in Al-Zn alloy matrix. But after 2 wt % Cu addition it is observed that the hardness increase is marginal. Wear rate (WR) and specific wear rate (SWR) were increases with increase of load and sliding velocity and decreases with Cu addition. Coefficient of friction (COF) remains constant for entire load and velocity for each alloy. However, when the alloys were tested at elevated temperatures, it was found that initially WR, SWR and COF decreases with temperature and then increases rapidly.

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2015

Journal Article

S. R. Kasthuri Raj, Dr. Ilangovan S., Dr. Sanjivi Arul, and Shanmugasundaram A., “Effect of variation in Al/Si content on mechanical properties of Zn-Al-Si alloys”, International Journal of Applied Engineering Research, vol. 10, pp. 2723-2731, 2015.[Abstract]


An investigation was carried out to find the effect of Al/Si content on mechanical properties in Zn-Al alloys. Six different alloy compositions were cast with Zn at 60 wt. % and Si varying from 0 wt. % to 5 wt. %. The alloys were prepared using stir casting process and poured into permanent mould metallic die. Micro-hardness, ultimate tensile strength and percentage elongation of the alloy specimens were measured. The microstructure of the alloy without Si content showed the presence of Al rich α-dendrites and inter-dendritic Zn-rich η phases. The addition of Si content up to 2 wt. % to the alloy system showed uniformly distributed discrete particles of Si in addition to the features of the Si-free alloy. However, when the Si content of the alloys goes beyond 2 wt. %, the Si particles formed large clusters. It was found that the hardness and ultimate tensile strength of the alloy increased with increase of Si content up to 3 wt. % and then decreased when Si content increased further. The percentage elongation decreases up to 3 wt. % of Si and then increases. It shows that the Si content has significant effect on mechanical properties of Zn-Al alloy. © Research India Publications.

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2015

Journal Article

K. K. Suresh, Dr. Ilangovan S., Dr. Sanjivi Arul, and Shanmugasundaram A., “Effect of zn/cu content on microstructure and mechanical properties of al-zn-cu cast alloys”, International Journal of Applied Engineering Research, vol. 10, pp. 9325-9333, 2015.[Abstract]


A binary Al-Zn and five ternary Al-Zn-Cu alloys were produced using stir casting process by varying the Cu contents from 0-5 wt. % and keeping Al content as constant value of 60 wt. %. It was found that the micro-hardness and the ultimate tensile strength of the alloys increases significantly with increasing Cu content up to 2 wt. % which is due to solid solution hardening of Cu content in Al-Zn alloy. Further increase of Cu content results in the formation of hard and brittle θ phase which weakens the inter-dendrite region and marginally increases the hardness and ultimate tensile strength of the alloy. The percentage elongation of the alloy system decreases continuously with addition of Cu content. © Research India Publications.

More »»

2015

Journal Article

Dr. Ilangovan S., “Study of microstructure, hardness and wear properties of sand cast Cu-4Ni-6Sn Bronze alloy”, Journal of Engineering Science and Technology, vol. 10, pp. 526-532, 2015.[Abstract]


An alloy of Cu-4Ni-6Sn was cast in the sand moulds. The cast rods were homogenized, solution heat treated and aged for different periods of time. The specimens were prepared from the rods to study the microstructure, micro-hardness and wear properties. It was found that the aging process increases the hardness of the alloy significantly. It was due to the change in the microstructure of the alloy. Further, spinodal decomposition and the ordering reaction take place during the aging treatment. Specific wear rate was found to decrease with the hardness of the alloy. Coefficient of friction remains constant and is not affected by the aging process. © School of Engineering, Taylor’s University.

More »»

2015

Journal Article

R. Devanathan, Dr. Sanjivi Arul, Dr. Ilangovan S., and Shanmugasundaram A., “Study On The Effect of Shallow Cryogenic Treatment on Hardness and Microstructure of Gtawwelded Aa6061 Specimens”, International Journal of Applied Engineering Research, vol. 10, pp. 21091-21099, 2015.[Abstract]


The Aluminium alloy AA 6061 loses its hardness significantly after Gas Tungsten Arc Welding (GTAW). The effect of post welded shallow cryogenic treatment (SCT) on hardness and micro structure of AA6061-T6 weldment is studied in this work.The GTAW welding was carried out with different heat inputs by varyingthe welding speed. The hardnessand microstructure were evaluated for as-welded and post weld shallow cryogenic treated specimens.It is found that the hardness of the post weldedSCT AA6061–T6 specimens increased significantlydue to the reactivationprecipitation sequencein the welded region. © Research India Publications.

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2015

Journal Article

R. J. Kiran, Dr. Sanjivi Arul, Dr. Ilangovan S., and Shanmugasundaram A., “Study on Effect of Various Cutting Fluids During Turning Operations of AISI 1016 steel”, International Journal of Applied Engineering Research, vol. 10, pp. 16825-16832, 2015.[Abstract]


High cutting temperatures affect the tool life, surface finish of the component and chip formation. In order to reduce the cutting temperature, suitable cutting fluids should be selected. In this work, water, coconut oil, compressed air, mixture of water and oil at room temperature and mixture of water and oil at 0 °C were used as cutting fluids during turning operation of AISI 1016 steel. In addition to this, dry turning was also performed. Turning operations were done using HSS cutting tool at different spindle speeds, while feed and depth of cut were kept constant. The influence of various cutting fluids on the cutting temperature, surface roughness and chip morphology were studied and compared. At minimum cutting temperature, reduced surface roughness and continuous chips were noticed when a mixture of water and oil were used as cutting fluid at 0 °C. © Research India Publications.

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2015

Journal Article

N. K. Robin, Dr. Ilangovan S., Dr. Sanjivi Arul, and Shanmugasundaram A., “Influence of nickel content on mechanical properties of aluminium-boron carbide hybrid composite”, International Journal of Applied Engineering Research, vol. 10, pp. 32311-32320, 2015.[Abstract]


In this work the influence of nickel (Ni) content on mechanical properties of aluminium matrix composite (AMC) was studied. Boron carbide was used as (B4C) reinforcement with aluminium (6061-T6) alloy. The nickel content was varied from 2 wt. % to 8 wt. % keeping boron carbide as constant value of 10 wt. %. The composite blocks were produced by stir casting method. The flux (K2TiF6) was added during melting process to improve the wettability of boron carbide content in the matrix. The dispersion of boron carbide and nickel particles were found to be homogeneous in the matrix by studying the microstructure using an optical microscope. It was observed that as the nickel content increases from 2 wt. % to 8 wt. %, the hardness value correspondingly increases from 121 VHN to 193 VHN. Similarly, the tensile strength also increases from 192 MPa to 305 MPa. The % elongation decreases from 16 to 9 with respect to increase in nickel content. The tensile strength increases and % elongation decreases with hardness of the alloy. © Research India Publications.

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2014

Journal Article

R. K. A, K, B., D, G., and Dr. Ilangovan S., “Investigation on the effect on the SiC reinforced aluminum metal matrix composites”, Advanced Composites Letters, vol. 23, pp. 55-60, 2014.

2014

Journal Article

Dr. Ilangovan S. and S., J., “Dry Sliding Wear Behaviour of Sand Cast Cu-11Ni-6Sn Alloy”, International Journal of Research in Engineering and Technology, vol. 3, pp. 1-5, 2014.[Abstract]


Wear behaviour of sand cast Cu-11Ni-6Sn alloy was studied using pin-on-disc wear tester with alloy steel disc as counterpart on dry sliding wear conditions. The alloy was prepared from pure elements and melted in an electric furnace under argon atmosphere and cast into sand moulds. The cast rods were homogenized, solution heat treated and aged. Specific wear rate and coefficient of friction were measured in a sliding speed of 191 rpm, 287 rpm and 382 rpm and different normal forces of 10 N, 15 N and 20 N. Hardness of the specimen was found to increase by the aging process and it reached its maximum value, after which it decreased. The specific wear rate was found to increase with the increase in normal load and it decreased with the increase in speed. Co-efficient of friction is independent of hardness of the alloy and dependent on both applied load and speed. The strength of the material is increased by a technique called spinodal decomposition and aging process. In the case of Cu-Ni-Sn system the various alloy composition was not tested for tribological behaviour. Only few alloy compositions are studied. So in this case we have taken Cu-11Ni-6Sn alloy composition. The products made by Cu-Ni-Sn alloy is less costlier compared to Cu-Be products without health hazard and used as high performance connector materials in electronics applications, bearing material in aerospace and mining industries, friction-reducing and anti-wear materials to make high performance bearings for aerospace, roller cone, rock bit and heavy duty mobile industrial equipment.

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2014

Journal Article

Dr. Ilangovan S., R., S., and G., V. Vyass, “Effects of Aging Time on Mechanical Properties of Sand Cast Al-4.5Cu Alloy”, International Journal of Research in Engineering and Technology, vol. 3, pp. 57-61, 2014.[Abstract]


An investigation was carried out to understand the effects of aging time of a cylindrical specimen on hardness, tensile strength and % elongation of sand cast Aluminium alloy (Al-4.5Cu). The alloy was melted in an electric furnace and the molten alloy was poured into sand moulds. The cast rods were tested for Vickers micro-hardness, ultimate tensile strength and % elongation. The aging time was varied from 4 to 40 hours in steps of 4 hours and the maximum hardness was achieved when the specimen was aged for 36 hours. It was found that the hardness of the alloy decreases when further aging was done. Moreover, it was observed that the tensile strength increases with increase in hardness, whereas the % elongation decreases.

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2014

Journal Article

Dr. Ilangovan S., “Effects of Solidification Time on Mechanical Properties and Wear Behaviour of Sand Cast Aluminium Alloy”, International Journal of Research in Engineering and Technology, vol. 3, pp. 71-75, 2014.[Abstract]


An investigation was carried out to understand the effects of solidification time of the cylindrical specimen on hardness, wear rate and the coefficient of friction of Aluminium alloy (LM4). The commercially available LM4 Aluminium alloy was melted in a crucible furnace under argon atmosphere. The molten metal was poured into sand moulds having dissimilar size holes. The cast rods were tested for Vickers micro-hardness, wear rate and the coefficient of friction. The solidification time increases from 0.22 to 0.61 seconds when the diameter varied from 20 to 35mm. It was found that the hardness of the alloy vary with the diameter of the rod. Wear rate is inversely proportional to the hardness of the alloy. It was observed that the yield strength and tensile strength are increases with hardness, whereas the % elongation decreases. Further, the coefficient of friction is independent of hardness and not affected by the sliding time. Wear rate decreases linearly with hardness.

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2014

Journal Article

Dr. Ilangovan S., Saikrishna, V., and K. Niranthar, G., “Study of Effect of Cooling Rate on Mechanical and Tribological Properties of Cast Al-6.5Cu Aluminium Alloy”, International Journal of Research in Engineering and Technology, vol. 3, pp. 62-66, 2014.[Abstract]


Solidification time is known to have a large effect on the microstructure of cast Aluminium alloys and hence its properties. This study is conducted to quantify how the mechanical properties of Al-6.5 Cu alloy vary with respect to the solidification time. The solidification time is varied by varying the diameter of the cast rod; this is based on the Chvorinov’s rule which gives a relation between solidification time and surface area, volume of the specimen. Mechanical properties such as Ultimate Tensile Strength, Micro- hardness are observed by experimentation and change in microstructure for all the different specimens are also studied and
inferred. It is observed that as the solidification time increases, the mechanical properties tend to decrease. Further the coefficient of friction is independent of the hardness and weight loss is dependent on hardness of the alloy.

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2014

Journal Article

Dr. Ilangovan S., “Investigation of the Mechanical, Corrosion Properties and Wear Behaviour of Electroless Ni-P plated Mild Steel”, International Journal of Research in Engineering and Technology, vol. 3, pp. 151-155, 2014.[Abstract]


In the present study the mild steel (MS) specimens were coated with Nickel-Phosphorus (Ni-P) using acrylic bath. Heat treatment was carried out on specimens under different temperatures and time periods in an inert atmosphere. The various mechanical and tribological tests were performed on specimens. Using weight loss method, the corrosion nature of the samples under different environments was also studied. The results show that there was significant effect in mechanical and chemical properties of the plated specimens. The properties of the heat treated specimens increased significantly with modest loss in fatigue properties.

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2013

Journal Article

Dr. Ilangovan S. and R. Sellamuthu, “Effects of tin on hardness, wear rate and coefficient of friction of cast Cu-Ni-Sn alloys”, Journal of Engineering Science and Technology, vol. 8, pp. 34-43, 2013.[Abstract]


An investigation was carried out to understand the effects of Sn on hardness, wear rate and the coefficient of friction of spinodal Cu-Ni-Sn alloys. Alloys of appropriate compositions were melted in a crucible furnace under argon atmosphere and cast into sand moulds. Solution heat treated and aged specimens were tested for hardness, wear rate and the coefficient of friction. It was found that the hardness increases when the Sn content increases from 4% to 8% in the solution heat treated conditions. The peak aging time is found to decrease with an increase in the Sn content. Further, the coefficient of friction is independent of hardness whereas the wear rate decreases linearly with hardness irrespective of Sn content. © School of Engineering, Taylors University.

More »»

2013

Journal Article

Dr. Ilangovan S., “A study on the effect of SiC reinforcement on the surface and tribological behavior on Al-Metal Matrix Composites”, Applied Mechanics and Materials, vol. 393, pp. 51 - 56, 2013.[Abstract]


Al matrix composites (Al-MMC) were reinforced with SiC and flyash particulate. The effects on the variation of SiC (5 %, 10 % and 15 %) were investigated by dry sliding method, whereas the flyash content was maintained at 14 %. Effect on the SiC on the mechanical and tribology was discussed in detail. Friction wear properties SiC reinforced was investigated. Coefficient of friction was estimated and is discussed for the various SiC compositions. Powder X-ray diffraction (XRD) was carried out to identify the homogeneous formation of the composites. Surface morphology was investigated by the use of optical microscope and scanning electron microscopic probe. Hardness of the prepared samples was subjected to Vickers microhardness test.

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2012

Journal Article

Dr. Ilangovan S. and R. Sellamuthu, “An investigation of the effect of Ni content and hardness on the wear behaviour of sand cast Cu-Ni-Sn alloys”, International Journal of Microstructure and Materials Properties, vol. 7, pp. 316-328, 2012.[Abstract]


Alloys of Cu-Ni-Sn with varying wt. %Ni have been cast in sand moulds. Specimens were homogenised, solubilised and aged to induce spinodal decomposition and were used for hardness and wear testing with a pin-on-disc unit under dry sliding condition in air. Ni increases the peak hardness and decreases the aging time, implying that it contributes significantly to the process of spinodal decomposition. The wear rate is found to be a function ofhardness. The coefficient of friction is observed to be a constant and independent of hardness. Copyright © 2012 Inderscience Enterprises Ltd.

More »»

Publication Type: Conference Proceedings

Year of Publication Publication Type Title

2014

Conference Proceedings

Dr. Ilangovan S. and Dr. Padmanaban R., “Effects of Ageing on Hardness and Wear Properties of Cu-9Ni-6Sn Cast Alloy”, International conference on advanced in design and manufacturing. 2014.

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