EDUCATION PHD RESEARCH ABSTRACT

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1 Pramod S L PhD Research Scholar, Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, India. Mobile: E mail: slpramod@gmail.com Webpage: EDUCATION Program Institution %/CGPA Year of completion PhD in Metallurgical and Materials Engineering Indian Institute of Technology Madras, Chennai 7.5/ M.E. in Industrial Metallurgy B.E. in Mechanical Engineering XII X PSG College of Technology, Coimbatore, Tamilnadu. (Anna University, Coimbatore) Noorul Islam College of Engineering, Kanyakumari, Tamilnadu. (Anna University, Chennai) Sacred Heart Matriculation Higher Secondary School, Padanthalumoodu, Kanyakumari, Tamilnadu Sri Vidyadhiraja Vidya Mandir High School, Thiruvananthapuram, Kerala 9.2/ % % % 2002 PHD RESEARCH ABSTRACT Effect of Sc addition on the microstructural modification and mechanical properties in A356 alloy and A356 -TiB2 in situ composite Al Si alloys and Al-matrix composites (AMCs) have received much attention for automobile, aerospace and structural applications due to their high specific strength, specific stiffness, higher hardness, wear resistance and good elevated temperature resistance. A356 alloys were used to manufacture sand cast and gravity cast automotive components. These alloys were used commercially after the addition of grain refiners and eutectic Si modifiers to improve the strength. Recently researchers started adding Sc as eutectic Si modifier and grain refiner in Al-Si alloys and insufficient literature motivated us to choose this research topic. The effect of 0.2 and 0.4 wt.% Sc addition on the Secondary Dendritic Arm Spacing (SDAS), eutectic Si modification, phase modification, mechanical properties and wear behavior in A356 alloy and A356-5/10 wt.% TiB2 composite were investigated. The A /0.4 wt.% Sc alloys were processed by

2 adding Al-2 wt.% Sc master alloy to A356 melt. The A356-5/10 wt.% TiB2 composites were prepared by insitu reaction between K2TiF6 and KBF4 salts added in proper stoichiometric ratio to form TiB2 in the A356 alloy melt at a temperature of 800 C. Addition of Sc reduced the secondary dendrite arms spacing (SDAS) by 50% and changed the Si morphology from needle-like to fine spheroidal particles. Microstructure of Sc modified alloys which were cast for different holding times of 5, 30, 60 and 120 min indicated that there was no fading or poisoning effect on the SDAS and eutectic Si morphology. It was found that a Sc addition of only 0.2 wt.% in A356 alloy modified eutectic Si by changing its morphology towards a rounded and fibrous shape. The AlFe5Si phase with needle like morphology in A356 alloy was also modified to fibrous irregular shaped morphology AlFe5SiSc phase. Sc addition in A356 alloy results in the grain refinement, modification of eutectic Si and the modification of Al5FeSi phase, which was not attained by any other elemental addition. Hardness was increased due to addition of Sc in both alloy and composite. Aging heat treatment was also performed and an increase in peak age hardness in Sc containing alloys and composites was observed. Pin-on-disk wear tests and tensile tests indicated that Sc addition improves the wear resistance and tensile properties of A356 alloy and A356-5/10 wt.% TiB2 in-situ composite. Keywords: Grain refinement, Modification, A356, TiB2, SDAS, Composite, Grain size, Hardness, Wear. JOURNAL PUBLICATIONS S. L. Pramod, A. K. Prasada Rao, B. S. Murty and Srinivasa R. Bakshi, Effect of Sc addition on the microstructure and wear properties of A356 alloy and A356-TiB2 in situ composite, Materials & Design, Volume 78, 5, August 2015, Pages S. L. Pramod, Srinivasa R. Bakshi and B.S. Murty, Aluminum Based Cast in situ Composites A Review, Journal of Materials Engineering and Performance, Volume 24, 6, June 2015, Pages Prathap Chandran, Tadepalli Sirimuvva, Niraj Nayan, A.K. Shukla, S.V.S.Narayana Murty, S. L. Pramod, S.C. Sharma, and Srinivasa R. Bakshi. "Effect of Carbon Nanotube Dispersion on Mechanical Properties of Aluminum-Silicon Alloy Matrix Composites", Journal of Materials Engineering and Performance 23 (2014) S. L. Pramod, A. K. Prasada Rao, B. S. Murty and Srinivasa R. Bakshi, Effect of Sc addition on the grain refinement, eutectic Si modification and phase modification in A356 alloy. (to be communicated) S. L. Pramod, A. K. Prasada Rao, B. S. Murty and Srinivasa R. Bakshi, Mechanical properties of Sc added A356 alloy and A356-TiB2 in-situ composite. (to be communicated)

3 INTERNATIONAL CONFERENCES S. L. Pramod, A. Elsayed, Srinivasa R. Bakshi, B.S. Murty, C. Ravindran. Processing and mechanical properties evaluation of in-situ AZ91- TiB2/TiC reinforced composites. 5th International Conference on Solidification Science and Processing (ICSSP-5), Nov. 2012, Bhubaneswar, India. S. L. Pramod, A. K. Prasada Rao, B. S. Murty and Srinivasa R. Bakshi. "Effect of Sc addition on microstructure and mechanical properties of A356 alloy and A wt.% TiB2 in-situ composites", International Conference on Recent Advances in Composite Materials (ICRACM-2013), Feb, 2013, Goa, India. S. L. Pramod, A. K. Prasada Rao, S. R. Bakshi, B. S. Murty, Effect of Sc addition on the grain refinement, Si modification and mechanical properties of A356 and A wt.% TiB2 in-situ composites, National Metallurgical Day Annual Technical Meeting (NMD-ATM 2013), November, 2013, Varanasi, India. S. L. Pramod, A. K. Prasada Rao, B. S. Murty and Srinivasa R. Bakshi, "Effect of Sc addition on microstructure, mechanical and wear properties in A356 alloy and A356-TiB2 composites" Innovation in Processing of Light Metals for Transportation Industries: A Symposium in Honor of C. Ravi Ravindran, Materials Science and Technology Conference, (MS&T14), October 12-16, 2014, Pittsburgh, USA. S. L. Pramod, A. K. Prasada Rao, B. S. Murty and Srinivasa R. Bakshi, "Effect of Sc addition on the microstructural modification and mechanical properties in A356 alloy and A356-TiB2 composite" Advances in Metal Casting Technologies, Materials Science and Technology Conference, (MS&T15), October 04-08, 2015, Columbus, USA. M.E. PROJECT Processing and characterization of silicon carbide (SiC) reinforced functionally graded aluminium matrix composites using centrifugal casting. B.E. PROJECT Design and fabrication of four wheel steering mechanism for automobiles.

4 OTHER PROJECTS Effect of Carbon Nano-Tube (CNT) dispersion on mechanical properties of Al and Al-Si alloy matrix composites. Development of biodegradable Mg-HAP composites using Spark plasma sintering (SPS). Multi-component Ni-Cu-Cr-Al High Entropy alloy coatings by plasma spraying. Al metallic foams by powder metallurgy techniques. Nanomechanical and Nanotribological studies on Nanocrystalline Nickel coatings. POSITIONS OF RESPONSIBILITY Chair, Material Advantage Student Chapter, IIT Madras ( ) Active representation in organizing technical events at UG, PG and PhD levels. TECHNICAL EXPERTISE Softwares: X Pert High Score Plus XRD analysis software, Autocad, Origin Graph data plotting software. Hands on experience in stir casting and centrifugal casting of Al and Mg alloys and composites. Hands on experience in Fritch planetary ball mill and Zoz Simoloyer high energy ball mill. Metallographic techniques Preparation of samples and handling optical microscope with polarizer. Scanning Electron Microscope Hands on experience on FEI Quanta 200, Quanta 400 and Inspect-F. Nanoindentation Hands on experience on Hysitron Tribo Indenter TI 950. Experience in operating Pin on disk wear test instrument, Instron mechanical tester and Vickers hardness tester. XRD Experience in operating PaNalytical Xpert instrument and analysis using Xpert high score plus software. ACHIEVEMENTS Best Project Award of ME Industrial Metallurgy of batch, PSG college of Technology. Best Outgoing student Award of ME Industrial Metallurgy of batch, PSG college of Technology.

5 Canadian Commonwealth Scholarship from Canadian Bureau for International Education (CBIE) and Foreign Affairs and International Trade Canada (DFAIT) to undergo research in Ryerson University, Toronto for four months. SKILLS & HOBBIES Personal Skills: Dedicated, Hardworking, Able to work independently/ together in a team. Hobbies: Listening to Music, Watching movies. OBJECTIVE Learn and function in an organization effectively. Constantly upgrade my knowledge and skills. PERSONAL DETAILS Date of Birth : 01/06/1987 Sex : Male Marital status : Single Nationality : Indian Languages known : English, Malayalam, Tamil and Hindi. REFERENCES Prof. B. S. Murty Professor, Dept. of Metallurgical and Materials Engineering Indian Institute of Technology, Madras, India, murty@iitm.ac.in Phone: Dr. Srinivasa Rao Bakshi Asst. Professor Dept. of Metallurgical and Materials Engineering Indian Institute of Technology, Madras, India, sbakshi@iitm.ac.in Phone: DECLARATION I hereby declare that the above information is true to the best of my knowledge and belief. Place: Chennai Date: 01/01/2016 Pramod S L