Profile picture for user mkarthik.mec

Dr. Manogna Karthik Gangaraju

Assistant Professor
Department of Mechanical Engineering IIT(BHU)
Phone No(s): .+91 9043905299
Email: gmkarthik.mec@iitbhu.ac.in
Area of Interest: Additive Manufacturing; Materials Joining
                    Vist my Website

  • Ph.D., Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, 2017

  • M.Tech, Welding Engineering, National Institute of Technology Tiruchirappalli, 2011

  • B.Tech, Production Engineering, V.R. Siddhartha Engineering College, 2008

  • Assistant Professor, Department of Mechanical Engineering, Indian Institute of Technology, BHU, Nov. 2022 - till present.

  • Assistant Professor, Department of Mechanical Engineering, Birla Institute of Technology, Pilani Hyderabad Campus, July 2022 - Nov. 2022.

  • Research Assistant Professor, Department of Materials Science and Engineering, Pohang University of Science and Technology, South Korea, Sep. 2021 - June 2022.

  • Post Doctoral Fellow, Department of Materials Science and Engineering, Pohang University of Science and Technology, South Korea, Nov. 2019 - Aug. 2021.

  • Manager-Product Development, Tube Products of India, Tube Investments, Chennai, Oct. 2017 - Nov. 2019.

  • Senior Project Officer, Indian Institute of Technology Madras, July 2017 - Oct. 2017.

  • Awarded ACADEMIC FELLOW position at Pohang University of Science and Technology.

  • Delivered Invited talks at IIT Madras, IIT Kanpur, NIT Patna, IIT Hyderabad, VIT Vellore, Caterpillar India, Tube Products of India. 

  • GUEST EDITOR for a special issue, "Additive Manufacturing of Advanced Materials: Fabrication, Characterization, and Properties." in Metals journal

  • Awarded BRAINPOOL FELLOWSHIP (Korean research fellowship) from the Government of Korea to pursue postdoctoral research at Pohang university of science and technology.

  • Awarded WELDWELL SPECIALITY AWARD for the best Ph.D thesis in the field of welding by the Indian Institute of Welding for the year 2017.

  • Awarded SUDHARSHAN BHAT MEMORIAL PRIZE for the best Ph.D. thesis in the Department of Metallurgical and Materials Engineering by the Indian Institute of Technology Madras for the year 2017.

  • Awarded ACADEMIC PROFICIENCY AWARD for securing Second Rank in M.Tech Welding Engineering for the first two semesters at National Institute of Technology Tiruchirappalli.

  • Awarded SHASTRI INSTITUTIONAL RESEARCH COLLABORATION DEVELOPMENT GRANT by Shastri Indo-Canadian Institute to work as an exchange scholar in Ryerson University, Canada, for a period of three months (May – July 2012).

  • BEST STUDENT PRESENTATION AWARD for a paper titled, “A study on the cryogenic deformation-induced martensitic behavior of stainless steel 316L using real-time neutron diffraction method”, in Fall Conference of Korean Society of Metals and Materials, October 2022, South Korea.

  • BEST PAPER AWARD for a paper titled, “Delayed TRIP behavior and improved cryogenic tensile properties of austenitic stainless steels fabricated by Direct Energy Deposition process”, in International Symposium on Innovation in Materials Processing, October 26-29, 2021, Jeju, South Korea.

  • BEST PAPER AWARD for a paper titled “Friction stir processing as a technique for improving HAZ liquation cracking resistance in magnesium alloys”, in International Conference and Expo on Magnesium (IMagCon 2016), Indian Institute of Metals & VIT University, Feb. 4-6, 2016, VIT University, Chennai, India.

  • BEST PAPER AWARD for a paper titled “Use of friction deposition for improved heat-affected zone liquation cracking resistance in nickel-base superalloys”, in In-House Symposium (IHS 2015), Dept. of Metallurgical & Materials Engineering, Jan. 27-28, 2016, IIT Madras, Chennai, India.

  • POSTER SESSION PRIZE for a paper titled “Microstructure and mechanical properties of friction welded 9Cr ferritic-martensitic and 18Cr ferritic ODS steels”, in 53rd National Metallurgists’ Day & 69th Annual Technical Meeting of Indian Institute of Metals (NMD-ATM 2015), Nov. 13-16, 2015, Hotel Le Meridien, Coimbatore, India.

  • BEST PAPER AWARD for a paper titled “Friction Deposition of Titanium Particle Reinforced Aluminum Matrix Composites,” in International Symposium for Research Scholars on Metallurgy, Materials Science and Engineering (ISRS 2014), Dept. of Metallurgical & Materials Engineering, Dec. 11-13, 2014, IIT Madras, Chennai, India.

  1. E.S. Kim, S.Y. Ahn, S.G. Jeong, E.H. Go, J.W. Bae, S.J. Hong, J. Wang, B.J. Lee, G.M. Karthik**, H.S. Kim, Cellular structure assisted enhanced deformation-induced martensitic transformation in laser-directed energy deposited ferrous medium-entropy alloy, Materials Science and Engineering A 922 (2024) 147631. [IF: 6.4]
  2. K.L. Rao, A. Bharadwaj, C.S.S. Satwika, J. Kopeček, G.M. Karthik, A.K. Gupta, Influence of constrained groove pressing and post-annealing on the mechanical, microstructural, and strain hardening behaviour of Nimonic 263 alloy, Materials Science and Engineering A 922 (2024) 147658. [IF: 6.4]
  3. R.M. Bagadi, J. Jaidi, G.M. Karthik, P.K. Reddy, Effect of tool rotational speeds on material flow and strain rates during friction stir butt welding of AA2219-T87 plates, International Journal of Modelling and Simulation (2024) 1-13. [IF: 3.1]
  4. S.G. Jeong, E.S. Kim, H. Kwon, S.Y. Ahn, J. Choe, G.M. Karthik**, Y.U. Heo, H.S. Kim, Tailoring deformation-induced martensitic transformation through cellular engineering in laser powder bed fusion processed 316L stainless steel, Materials Science and Engineering A 898 (2024) 146383. [IF: 6.4]
  5. P.V. Neminathan, R. Damodaram, G.M. Karthik, K. Gopinath, Tensile and low cycle fatigue behavior of dissimilar friction welds of alloy 718 / alloy 720Li, Journal of Materials Engineering and Performance 33 (2024) 3221-3236. [IF: 2.3]
  6. S.G. Jeong, S.Y. Ahn, E.S. Kim, S.H. Kang, S.H. Yoo, J.Y. Ryu, J.H. Chun, G.M. Karthik**, H.S. Kim, Liquation cracking in laser powder bed fusion-fabricated Inconel718 of as-built, stress-relieved, and hot isostatic pressed conditions, Materials Science and Engineering A 888 (2023) 145797. [IF: 6.4]
  7. S. Cyril, R. Damodaram, G.M. Karthik, S.R. Koteswara Rao, Friction deposition additive manufacturing of alloy 718: Effect of post-heat treatment on microstructures and mechanical properties, International Journal of Advanced Manufacturing Technology 128 (2023) 3901–3919. [IF: 3.4]
  8. R.E. Kim, G.M. Karthik**, A. Amanov, Y.U. Heo, S.G. Jeong, G.H. Gu, H. Park, E. S. Kim, D.W. Lee, H.S. Kim, Superior gradient heterostructured alloys fabricated by laser powder bed fusion via annealing and ultrasonic nanocrystal surface modification, Scripta Materialia 230 (2023) 115422. [IF: 6.0]
  9. H. Kwon, P. Sathiyamoorthi, G.M. Karthik**, A. Zargaran, J. Wang, Y.U. Heo, S. Harjo,W. Gong, B.J. Lee, H.S. Kim, High-density nanoprecipitates and phase reversion via maraging enable ultrastrong yet strain-hardenable medium-entropy alloy, Acta Materialia 248 (2023) 118810. [IF: 9.4]
  10. E.S. Kim, J.M. Park, G.M. Karthik, K.T. Kim, J.H. Yu, B.J. Lee, H.S. Kim, Local composition detouring for defect-free compositionally graded materials in additive manufacturing, Materials Research Letters 11 (2023) 586-594. [IF: 8.3]
  11. E.S. Kim, K.R. Ramkumar, G.M. Karthik**, S.G. Jeong, S.Y. Ahn, P. Sathiyamoorthi, H. Park, Y.U. Heo, H.S. Kim, Cryogenic tensile behavior of laser additive manufactured CoCrFeMnNi high entropy alloys, Journal of Alloys and Compounds 942 (2023) 169062. [IF: 6.2]
  12. J. Kwon, G.M. Karthik, Y. Estrin, H.S. Kim, Constitutive modeling of cellular-structured metals produced by additive manufacturing, Acta Materialia 241 (2022) 118421. [IF: 9.4]
  13. G.M. Karthik, Y. Kim, E.S. Kim, A. Zargaran, P. Sathiyamoorthi, J.M. Park, S.G. Jeong, G.H. Gu, A. Amanov, T. Ungar, H. S. Kim, Gradient heterostructured laser-powder bed fusion processed CoCrFeMnNi high entropy alloy, Additive Manufacturing 59 (2022) 103131. [IF: 11.0]
  14. G.M. Karthik, E.S. Kim, A. Zargaran, P. Sathiyamoorthi, S.G. Jeong, H.S. Kim, Role of cellular structure on deformation twinning and hetero-deformation induced strengthening of laser powder-bed fusion processed CuSn alloy, Additive Manufacturing 54 (2022) 102744. [IF: 11.0]
  15. S.Y. Ahn, E.S. Kim, G.M. Karthik, K.R. Ramkumar, S.G. Jeong, R.E. Kim, G.H. Gu, H.S. Kim, Thickness effect on the microstructures and mechanical properties of laser-powder bed fusion processed 316L stainless steel wall, Journal of Materials Science 57 (2022) 18101-18117. [IF: 4.5]
  16. S.G. Jeong, S. Y. Ahn, E.S. Kim, G.M. Karthik, Y. Baik, D.H. Seong, Y.S. Kim, W. Woo, H.S. Kim, Effect of substrate yield strength and grain size on the residual stress of direct energy deposition additive manufacturing measured by neutron diffraction, Materials Science and Engineering A 851 (2022) 143632. [IF: 6.4]
  17. M.J. Sagong, E.S. Kim, J.M. Park, G.M. Karthik, B.J Lee, J.W. Cho, C.S. Lee, T. Nakano, H.S. Kim, Interface characteristics and mechanical behavior of additively manufactured multi-material of stainless steel and Inconel, Materials Science and Engineering A (2022) 143318. [IF: 6.4]
  18. S.G. Jeong, G.M. Karthik*, E.S. Kim, A. Zargaran, S.Y. Ahn, M.J. Sagong, S.H. Kang,J.W. Cho, H.S. Kim, Architectured heterogeneous alloys with selective laser melting, Scripta Materialia 208 (2022) 114332. [IF: 6.0]
  19. G.M. Karthik, F. Haftlang, J. Kwak, P. Sathiyamoorthi, A. Zargaran, Y. T. Kim, H.S. Kim, The influence of laser powder-bed fusion microstructures on the corrosion behavior of CuSn alloy, Journal of Materials Science 57, (2022) 17923-17934 (2022). [IF: 4.5]
  20. R.E. Kim, E.S. Kim, G.M. Karthik, G.H. Gu, S.Y. Ahn, J. Moon, H.S. Kim, Heterostructured alloys with enhanced strength-ductility synergy through laser-cladding, Scripta Materialia 215 (2022) 114732. [IF: 6.0]
  21. P. Sathiyamoorthi, P.A. Rad, A. Zargaran, G.M. Karthik, H. Kwon, H.S. Kim, 1.7 Gpa tensile strength in ferrous medium entropy alloy via martensite and precipitation, Material Letters 307 (2022) 130958. [IF: 3.0]
  22. S. Cyril, R. Damodaram, G.M. Karthik, B. Lakshmana Rao, Friction surfaced alloy 718 deposits: Effect of process parameters on coating performance, Journal of Materials Engineering and Performance,31 (2022) 4119-4132. [IF: 2.3]
  23. V. Rajoria, G. Naina, S. Vijayan, C.H. Prasad, R. Damodaram, G.M. Karthik, F. Khan, Development of SS 304L composite coatings on mild steel substrate using friction surfacing and wear characterization, Materials Today: Proceedings, 62 (2022) 746-754.
  24. G.M. Karthik, E.S. Kim, P. Sathiyamoorthi, A. Zargaran, S.G. Jeong, R. Xiong, S.H. Kang, J.W. Cho, H.S. Kim, Delayed deformation-induced martensite transformation and enhanced cryogenic tensile properties in laser additive manufactured 316L austenitic stainless steel, Additive Manufacturing 47 (2021) 102314. [IF: 11.0]
  25. G.M. Karthik, P.A. Rad, P. Sathiyamoorthi, A. Zargaran, E.S. Kim, T.S. Kim, H.S. Kim, Architectured multi-metal CoCrFeMnNi-Inconel 718 lamellar composite by high-pressure torsion, Scripta Materialia 195 (2021) 113722. [IF: 6.0]
  26. G.M. Karthik, H.S. Kim, Heterogeneous Aspects of Additive Manufactured Metallic Parts: A Review, Metals and Materials International 27 (2021) 1-39. [IF: 3.5]
  27. R. Xiong, H. Kwon, G.M. Karthik**, G. Gu, P.A. Rad, S. Son, E.S. Kim, H.S. Kim, Novel multi-metal stainless steel (316L)/high-modulus steel (Fe-TiB2) composite with enhanced specific modulus and strength using high-pressure torsion, Materials Letters, 303 (2021) 130510. [IF: 3.0]
  28. H Kwon, P. Sathiyamoorthi, G.M. Karthik, P.A. Rad, A. Zargaran, H.S. Do, B.J. Lee, H.S. Kim, 2.3 GPa cryogenic strength in a novel Fe based medium entropy alloy through thermal and deformation-induced BCC martensite, Scripta Materialia 204 (2021) 114157. [IF: 6.0]
  29. P. Sathiyamoorthi, P.A. Rad, G.M. Karthik, A. Zargaran, H.S. Kim, Unusual strain-induced martensite and absence of conventional grain refinement in twinning induced plasticity high-entropy alloy processed by high-pressure torsion, Materials Science and Engineering: A 803 (2021) 140570. [IF: 6.4]
  30. G.M. Karthik, P. Sathiyamoorthi, A. Zargaran, J.M. Park, P.A. Rad, S. Son, S.H. Park, H.S. Kim, Novel precipitation and enhanced tensile properties in selective laser melted Cu-Sn alloy, Materialia 13 (2020) 100861. [IF: 3.4]
  31. V.K. Nadimpalli, G.M. Karthik, G.D. Janaki Ram, P.B. Nagy, Monitoring and repair of defects in ultrasonic additive manufacturing, International Journal of Advanced Manufacturing Technology 108 (2020) 1793-1810. [IF: 3.4]
  32. R. Damodaram, G.M. Karthik, S.V. Lalam, Microstructure and mechanical properties of a rotary friction welded tungsten heavy alloy, Materials Testing 61 (2019) 209-212. [IF: 2.5]
  33. G. Sankar, G.M. Karthik, A. Mohammad, R. Kumar, G.D. Janaki Ram, Friction welding of electron beam melted γ-TiAl alloy Ti–48Al–2Cr–2Nb, Transactions of the Indian Institute of Metals 72 (2019) 35-46. [IF: 1.6]
  34. F. Khan, G.M. Karthik, S. Panigrahi, G.D. Janaki Ram, Friction stir processing of QE22 magnesium alloy to achieve ultrafine-grained microstructure with enhanced room temperature ductility and texture weakening, Materials Characterization 147 (2019) 365-378. [IF: 4.7]
  35. S.C. Krishna, N. Karthick, G.M. Karthik, R. Damodaram, A.K. Jha, B. Pant, R.M. Cherian, Effect of post-weld heat treatment on the microstructure and mechanical properties of friction stir welds of Cu–Cr–Zr–Ti alloy, Metallography, Microstructure, and Analysis 7 (2018) 703-710. [IF: 1.6]
  36. G.M. Karthik, G.D. Janaki Ram, R.S. Kottada, Use of friction stir processing for improving heat-affected zone liquation cracking resistance of a cast magnesium alloy AZ91D, Metallurgical and Materials Transactions B 48 (2017) 3270-3280. [IF: 3.0]
  37. G.M. Karthik, G.D. Janaki Ram, R.S. Kottada, Use of friction buttering for overcoming HAZ liquation cracking, Metallurgical and Materials Transactions B 48 (2017) 2274-2280. [IF: 3.0]
  38. G.M. Karthik, G.D. Janaki Ram, R.S. Kottada, Heat-affected zone liquation cracking resistance of friction stir processed aluminum-copper alloy AA 2219, Metallurgical and Materials Transactions B 48 (2017) 1158-1173. [IF: 3.0]
  39. G.M. Karthik, P. Mastanaiah, G.D. Janaki Ram, R.S. Kottada, Friction buttering: A new technique for dissimilar welding, Metallurgical and Materials Transactions B 48 (2017) 1416-1422. [IF: 3.0]
  40. G.M. Karthik, G.D. Janaki Ram, R.S. Kottada, Friction stir selective alloying, Materials Science and Engineering A 684 (2017) 186-190. [IF: 6.4]
  41. G.M. Karthik, S. Panikar, G.D. Janaki Ram, R.S. Kottada, Additive manufacturing of an aluminum matrix composite reinforced with nanocrystalline high-entropy alloy particles, Materials Science and Engineering A 679 (2017) 193-203. [IF: 6.4]
  42. G.M. Karthik, G.D. Janaki Ram, R.S. Kottada, Friction deposition of titanium particle reinforced aluminum matrix composites, Materials Science and Engineering A 653 (2016) 71-83. [IF: 6.4]

* Co-first author   ** Co-Corresponding author

 

  • S.G. Jeong, E.S. Kim, G.M. Karthik, H.S. Kim, Method for fabrication metal additive manufactured parts having heterogeneous microstructure, Korean Patent# 10-2021-0141307, Oct 2021.

 

  1. A. Joshita, V. Jahnavi, A. Kowsik, A.R. Vighnesh, I. Siva, K.N.S. Pavan Kumar, V.P. Ramachandran, G.M. Karthik**, S.G. Rajasekharan, Design, Simulation, and Testing of 3D printed Auxetic structure for Vibration Isolation, AIMTDR 2023, 08-10 December 2023, IIT (BHU) Varanasi.
  2. P. Abid Singh, B. Ganesh, J. Aravind, K. Ram Prathab, G.M. Karthik**, Quantitative Phase Analysis and Image Processing Using MATLAB, AIMTDR 2023, 08-10 December 2023, IIT (BHU) Varanasi.
  3. H. Kwon, P. Sathiyamoorthi, G.M. Karthik, A. Zargaran, J. Wang, Y.U. Heo, S. Harjo, W. Gong, B.J. Lee, H.S. Kim, Development of maraging heavy entropy alloy with excellent strength and work hardenability using nanoprecipitation phase and reverse FCC transformation, Korean Society of Metals and Materials, 2023 Spring Conference.
  4. E.S. Kim, G.M. Karthik, S.Y Ahn, S.G. Jeong, Y.U. Heo, H.S. Kim, Enhanced mechanical properties of functional grade materials fabricated from 316L stainless steel and Fe-based medium entropy alloy using direct energy deposition process, 2023 TMS Annual Meeting & Exhibition, Additive Manufacturing: Materials Design and Alloy Development V– Design Fundamentals, March 19–23, 2023, San Diego, USA.
  5. S.G. Jeong, G.M. Karthik, S.Y Ahn, E.S. Kim, H.S. Kim, Liquation cracking study of additively manufactured Alloy 718 using thermal-mechanical simulator, 2023 TMS Annual Meeting & Exhibition, Additive Manufacturing: Length-Scale Phenomena in Mechanical Response, March 19–23, 2023, San Diego, USA.
  6. S.G. Jeong, E.S. Kim, H. Kwon, S.Y Ahn, G.M. Karthik, H.S. Kim, A study on the cryogenic deformation induced martensitic behavior of stainless steel 316L using real-time neutron diffraction method, Korean Society of Metals and Materials, 2022 Fall Conference,
  7. G.M. Karthik, E.S. Kim, A. Zargaran, P. Sathiyamoorthi, S.G. Jeong, H.S. Kim, Suppressed deformation twinning in laser powder-bed fusion processed CuSn alloy, The Korean Society for Technology of Plasticity, 2022, Spring, Foster.
  8. S.Y Ahn, L. Han, E.S Kim, P.A. Rad, G.M Karthik, C.W Fei, H.S Kim, Ultrahigh strength-ductility synergy of high-pressure torsion and heat treatment of additive manufactured CoCrFeMnNi high-entropy alloy, The Korean Society for Technology of Plasticity, 2022, Spring, Foster.
  9. S.Y. Ahn, G.M. Karthik, P.A. Rad, P. Sathiyamoorthi, A. Zargaran, E.S. Kim, T. S. Kim, H.S. Kim, Architectured multi-metal CoCrFeMnNi-Inconel 718 lamellar composite by high-pressure torsion, The Korean Society for Technology of Plasticity, 2021, Korea.
  10. G.M. Karthik, E.S. Kim, P. Sathiyamoorthi, A. Zargaran, S.G. Jeong, R. Xiong, S.H. Kang, J.W. Cho, H.S. Kim, Excellent strength-ductility synergy in laser processed 316L stainless steel at cryogenic temperature, Proceedings of the 35th Conference on Advanced Structural Materials, The Korean Institute of Metals and Materials, Busan, Korea, November 11-12, 2021.
  11. P. Sathiyamoorthi, H. Kwon, G.M. Karthik, A. Zargaran, P.A. Rad, H.S. Kim Excellent tensile properties using lath martensite structure and precipitation in iron-based medium entropy alloy, Proceedings of the 35th Conference on Advanced Structural Materials, The Korean Institute of Metals and Materials, Busan, Korea, November 11-12, 2021.
  12. E.S. Kim, G.M. Karthik, P. Sathiyamoorthi, A. Zargaran, S.G. Jeong, R. Xiong, S.H. Kang, J.W. Cho, H.S. Kim, Excellent strength-ductility synergy with delayed deformation-induced martensitic transformation at cryogenic temperature in laser processed 316L stainless steel, International Symposium on Innovation in Materials Processing, October 26-29, 2021, Jeju, South Korea (awarded best oral presentation).
  13. P. Sathiyamoorthi, P.A. Rad, G.M. Karthik, A. Zargaran, H.S. Kim, Utilizing high-pressure torsion as a cold consolidation technique to fabricate high entropy alloys, International Symposium on Innovation in Materials Processing, 26-29 October 2021, Jeju, South Korea.
  14. E.S. Kim, G.M. Karthik, P. Sathiyamoorthi, A. Zargaran, S.G. Jeong, R. Xiong, S.H. Kang, J.W. Cho, H.S. Kim, Delayed TRIP behavior and improved cryogenic tensile properties of austenitic stainless steels fabricated by Direct Energy Deposition process, Spring Conference of Korean Society of Metals and Materials, October 20-22, 2021, South Korea.
  15. G.M. Karthik, P.A. Rad, P. Sathiyamoorthi, A. Zargaran, E.S. Kim, T.S. Kim, H.S. Kim, Architectured multi-metal CoCrFeMnNi-Inconel 718 lamellar composite with excellent strength ductility synergy using high-pressure torsion, Spring Conference of Korean Society of Metals and Materials, April 28-30, 2021, South Korea.
  16. G.M. Karthik, S.G. Jeong, P. Sathiyamoorthi, A. Zargaran, J.M. Park, P.A. Rad, S. Son, S.H. Park, H.S. Kim, Exceptional strength-ductility synergy with nano-precipitation and heterostructured hardening in selective laser melted Cu-Sn alloy, Korean Powder Metallurgy Institute Spring Conference, April 1-2, 2021, South Korea.
  17. G.M. Karthik, N. Kumar, Govind, M. Amirthalingam, G.D. Janaki Ram, Weldability of a cast nickel-base superalloy XH67, International Congress 2017 (IC 2017), The Indian Institute of Welding, December 7-9, 2017, Chennai, India.
  18. G.S. Sankar, G.M. Karthik, A. Mohammad, N.V. Ravi Kumar, G.D. Janaki Ram, Friction welding of electron beam melted γ-TiAl alloy Ti-48Al-2Cr-2Nb, International Congress 2017 (IC 2017), The Indian Institute of Welding, December 7-9, 2017, Chennai, India.
  19. P. Venkatesh, G.M. Karthik, S. Sudharsanan, G.D. Janaki Ram, M. Amirthalingam, Govind, Hot cracking behavior of a cast nickel-base superalloy XH43, 70th IIW Annual Assembly and International Conference, June 25-30, 2017, Shanghai, China.
  20. G.M. Karthik, G.D. Janaki Ram, R.S. Kottada, Use of friction deposition for improved heat-affected zone liquation cracking resistance in nickel-base superalloys, In-House Symposium (IHS 2015), Dept. of Metallurgical & Materials Engineering, Jan. 27-28, 2016, Chennai, India (awarded best oral presentation).
  21. G.M. Karthik, G.D. Janaki Ram, R.S. Kottada, Friction stir processing as a technique for improving HAZ liquation cracking resistance in magnesium alloys, International Conference and Expo on Magnesium (IMagCon 2016), Indian Institute of Metals & VIT University, Feb. 4-6, 2016, Chennai, India (awarded best oral presentation).
  22. G.M. Karthik, B.L. Rao, E. N. Kumar, G.D. Janaki Ram, R.S. Kottada, Effect of friction stir processing on heat-affected zone liquation cracking resistance of aluminum-copper alloy AA2219, 53rd National Metallurgists’ Day & 69th Annual Technical Meeting of the Indian Institute of Metals (NMD-ATM 2015), Nov. 13-16, 2015, Coimbatore, India.
  23. R.S. Panikar, G.M. Karthik, G.D. Janaki Ram, R.S. Kottada, Friction deposition of novel metal-metal composite, 53rd National Metallurgists’ Day & 69th Annual Technical Meeting of the Indian Institute of Metals (NMD-ATM 2015), Nov. 13-16, 2015, Coimbatore, India.
  24. S. Shankar, G.N.D.P Praveen, G.M. Karthik, G.D. Janaki Ram, R. Vijay, A.V. Reddy, G. Sundararajan, Microstructure and mechanical properties of friction welded 9Cr ferritic-martensitic and 18Cr ferritic ODS steels, 53rd National Metallurgists’ Day & 69th Annual Technical Meeting of the Indian Institute of Metals (NMD-ATM 2015), Nov. 13-16, 2015, Coimbatore, India (awarded best poster).
  25. N.T.B.N. Koundinya, G.M. Karthik, G.D. Janaki Ram, R.S. Kottada, Deformation behavior of friction stir processed magnesium alloy, 10th International Conference on Magnesium Alloys and Their Applications (Mg 2015), Oct. 11-16, 2015, Jeju, Korea.
  26. G.M. Karthik and G.D. Janaki Ram, Friction welding of aluminum to magnesium: A novel approach, 144th Annual Meeting & Exhibition of The Minerals, Metals & Materials Society (TMS 2015), Mar. 15-19, 2015, Orlando, FL, USA.
  27. G.M. Karthik, G.D. Janaki Ram, R.S. Kottada, Improving heat-affected zone liquation cracking resistance of magnesium alloy AZ91E by friction stir processing, 144th Annual Meeting & Exhibition of The Minerals, Metals & Materials Society (TMS 2015), Mar. 15-19, 2015, Orlando, FL, USA.
  28. G.M. Karthik, G.D. Janaki Ram, R.S. Kottada, Friction deposition of titanium particle reinforced aluminum matrix composites, International Symposium for Research Scholars on Metallurgy, Materials Science and Engineering (ISRS 2014), Dept. of Metallurgical & Materials Engineering, Dec. 11-13, 2014, Chennai, India (awarded best oral presentation).
  29. G.M. Karthik, G.D. Janaki Ram, R.S. Kottada, Microstructures and properties of SiCp/Al composite coatings developed using friction surfacing, 52nd National Metallurgists’ Day & 68th Annual Technical Meeting of the Indian Institute of Metals (NMD-ATM 2014), Nov. 12-15, 2014, Pune, India.
  30. V.S. Surya Teja, G.M. Karthik, G.D. Janaki Ram, Improving heat-affected zone liquation cracking resistance of nickel-base superalloys using friction deposition, National Conference on Thermo-Mechanical Simulation using Gleeble Systems and 4th Gleeble User Workshop India (GUWI 2014), Indian Institute of Metals & Dept. of Metallurgical & Materials Engineering, July 10-12, 2014, Chennai, India.
  31. G.M. Karthik, J.J.S. Dilip, R. Damodaram, G.D. Janaki Ram, K. Prasad Rao, Friction surfaced SiCp/Al composite coatings, Heat Treatment & Surface Engineering Conference & Expo (HT&SE 2013), ASM International, May 16-18, 2013, Chennai, India.
  32. T.K. Mishra, G.M. Karthik, N. Naveen Kumar, G.D. Janaki Ram, H.C. Dey, Shaju K. Albert, Use of friction welding for producing stainless steel/titanium pipe joining inserts, Advances in Welding Science & Technology (ADWEST 2013), Indian Institute of Welding, May 3-4, 2013, Puducherry, India.
  33. G.M. Karthik, G.D. Janaki Ram, F. D'Elia, C. Ravindran, K. Prasad Rao, A New method to produce titanium particle reinforced aluminum matrix composites, Advances in Naval Materials (ADNAM 2013), Naval Research Board, Feb. 23, 2013, NIOT, Chennai, India.
  34. R. Gokulnath, G.M. Karthik, G.D. Janaki Ram, Microstructure and properties of friction surfaced Stellite 6, 50th National Metallurgists’ Day & 66th Annual Technical Meeting of the Indian Institute of Metals (NMD-ATM 2014), Nov. 16-19, 2012, Jamshedpur, India.