Metallurgical and Materials Engineering

Dr. R. Ajay Kumar

Assistant Professor
Education
: Ph.D - IIT Bombay
Email
: ajay.r@rgukt.ac.in
Dr. R. Ajay Kumar has joined the institute in 2016.
Professional Experience (Before Ph.D.):
  1. Junior Engineer, BHEL Lingampally, June 2006 to June 2007
  2. Research Associate, IIT Bombay during January 2015 to July 2015
Professional Experience (After Ph.D.):
  1. Worked as faculty in NIT Warangal during July 2015 to July 2016
  2. Working as Assistant Professor in RGUKT Basar from August 2016 to present
Research Areas
  1. Physical metallurgy
  2. Microstructure characterization
  3. Alloy development technology
  4. Welding technology
  5. Deformation processes
  6. Crystallographic texture of materials
  7. Molecular dynamics simulation
List of publications

After joining RGUKT Basar:

  1. Synthesis and characterization of Ca1-xBaxCu3Ti4O12 (x= 0 & 0.05)”, A.K. Revelly et.al., Materials Today: Proceedings, doi:https://doi.org/10.1016/j.matpr.2020.10.347
  2. “Evaluation of Microstructure and Mechanical Properties for Friction Stir Welding of Aluminium HE-30 Plates”, A.K. Revelly et.al., Materials Science Forum, doi:https://doi.org/10.4028/www.scientific.net/MSF.969.720
  3. “Microtexture Study: Effect of Different Irradiation Sources on Zirconium and its Alloys”, A.K. Revelly, Applied Mechanics and Materials, doi: https://doi.org/10.4028/www.scientific.net/AMM.877.3

Before Joining RGUKT Basar:

  1. “Orientation Sensitivity of Focused Ion Beam Damage in Pure Zirconium: Direct Experimental Observations and Molecular Dynamics Simulations” A.K. Revelly, N. Srinivasan, A.S. Panwar, K.V. Mani Krishna, R. Tewari, D. Srivastava, G.K. Dey and I. Samajdar, Philosophical Magazine 94 (2014) 1601.
  2. “Grain Boundary Energy and Relative Ion Damage: Experimental Observation and Molecular Dynamics Simulation” A.K. Revelly, G. Monpara, R.P. Singh, A.S. Panwar, K.V. Mani Krishna, R. Tewari, D. Srivastava, G.K. Dey and I. Samajdar. Philosophical Magazine Letters 94 (2014) 601.
  3. “Effect of Gallium Ion Damage on Poly-Crystalline Zirconium: Direct Experimental Observations and Molecular Dynamics Simulations” A.K. Revelly, G. Monpara, A.S. Panwar, K.V. Mani Krishna, R. Tewari, D. Srivastava, G.K. Dey and I. Samajdar, Journal of Nuclear Materials, 467 (2015) 155.
  4. “High Purity Zirconium Under Niobium Ion Irradiation: Possibility of a dynamic precipitation?” A.K. Revelly, A.S. Panwar, K.V. Mani Krishna, R. Tewari, H.W. Becker, D. Srivastava, G.K. Dey and I. Samajdar, Philosophical Magazine, 95 (2015) 3727.
  5. “Anodic Polarization Behavior Of Cold Worked Austenitic Stainless Steel” N. Srinivasan, A.K. Revelly, V. Kain, I. Samajdar, C.R. Hutchinson, P. Sivaprasad, Advanced Materials Research 794 (2013) 632.
  6. “Textural and microstructural evolutions during deformation and annealing of Nb-1%Zr-0.1%C (wt%) Alloy” B. Vishwanadh, K.V. Mani Krishna, A.K. Revelly, I. Samjdar, R. Tewari, G.K. Dey, Materials Science & Engineering A, 5093(2013) 00827.
  7. “Study on RecrystallizationBeahvior of Nb-1Zr-0.1C Alloy” B. Vishwanadh, K.V. Mirji, K. Vaibhav, S.K. Jha, R. Ajay Kumar, I. Samajdar, D. Srivastava, G.K. Dey and R. Tewari, Materials Science Forum 702- 703 (2012) 631.
  8. “Effect of prior cold-work on radiation-induced segregation in proton-irradiated austenitic stainless steel” Parag M. Ahmedabadi , V. Kain , I. Samajdar, M. Gupta, S.C. Sharma , P. Bhagwat , Ajay kumar , Corrosion Science 60 (2012) 153.
  9. “Defect profiling in organic semiconductor multilayers” Priya Maheshwari , P.K. Pujari, S.K. Sharma, K. Sudarshan, D. Dutta, S. Samanta, A. Singh , D.K. Aswal, R. Ajay Kumar, I. Samajdar, Organic Electronics 13 (2012) 1409.
  10. “Surface working of 304L stainless steel: Impact onmicrostructure, electrochemical behavior and SCC resistance” S.G. Acharyya, A. Khandelwal, V. Kain, A. Kumar, I. Samajdar, Materials Characterization 72 ( 2012 ) 68.
  11. “Texture And Microstructure Development During Swaging And Annealing Process Of Fabrication Of Zircaloy-4 Rod Products”, S. Neogy, S. Acharya ,K. V. ManiKrishna, D. Srivastava, G. K. Dey, C. Phani Babu, Gourahari Das, B. Raut, R. K. Chaube, S. K. Jha, B. Prahlad, N. Saibaba, A. Kumar and I. Samajdar, Materials Science Forum 702-703 (2012) 830.
International /National conferences presentations
  1. “Microstructural studies on Zirconium and its alloys” A.K. Revelly, National Seminar On Chemistry - The Central Science, 2017, Girraj Govt. College, Nizamabad, Telangana, India.
  2. “Microtexture study: Effect of different irradiation sources on Zirconium and its alloys”,A.K. Revelly, ICRAMMCE -2017, MLRIT College, Hyderabad, Telangana, India
  3. “Effect of ion implantation on poly-crystalline Zirconium and molecular dynamics simulations” A.K. Revelly, N. Srinivasan, A.S. Panwar, K.V. Mani, R. Tewari, D. Srivastava and G.K. Dey, I. Samajdar, Material Research symoposium-2014, MEMS, IIT Bombay.
  4. “Radiation damage in zirconium: A microstructural perspective” A.K. Revelly, A.S.Panwar, K.V. Mani Krishna, R. Tewari, D. Srivastava, G.K. Dey and I. Samajdar, ICOTOM-17, 2014, Dresden, Germany.
  5. “Study of development of grain boundary due to ion impacts on poly-crystal Zirconium: Experimental and MD Simulations” A.K. Revelly, N. Srinivasan, A.S. Panwar, I. Samajdar, K.V. Mani, R. Tewari, D. Srivastava and G.K. Dey, XIV International Conference on Intergranular and Interphase Boundaries in Materials, 2013, Greece.
  6. “Simulating Radiation damage through Focused Ion Beam: Direct experimental observations and Molecular dynamics simulation ” A.K. Revelly, N. Srinivasan, A.S. Panwar, K.V. Mani, R. Tewari, D. Srivastava and G.K. Dey, I. Samajdar NMD-ATM-2013, IIT(BHU), Varanasi, India.
  7. “Effect of ion irradiation in crystal bar zirconium: Defining the role of crystallographic orientations and developments in sub-surface residual stresses” A.K. Revelly, N.Srinivasan, A.S. Panwar, I. Samajdar, K.V. Mani, R. Tewari, D. Srivastava and G.K. Dey, Microstructure-2013, Mumbai, India.
  8. “Effect of ion impacts on poly-crystal Zirconium and MD Simulations” A.K. Revelly, A.S.Panwar, I. Samajdar, K.V. Mani, R. Tewari, D. Srivastava and G.K. Dey, Material Research symoposium-2013, MEMS, IIT Bombay.
  9. “Effect of Orientation Sensitivity with Ga+Ion Damage: Direct Observations and Molecular Dynamics (MD) Simulations” R. Ajay Kumar, A.S. Panwar, I. Samajdar, K.V. Mani, R. Tewari, D. Srivastava and G.K. Dey, Material Research symoposium-2012, MEMS, IIT Bombay.
  10. “Orientation Sensitivity of Ga+ Ion Damage Direct Observations and Molecular Dynamics (MD) Simulations” R. Ajay Kumar, A.S. Panwar, I. Samajdar, K.V. Mani, R. Tewari, D. Srivastava and G.K. Dey, Microstructure-2011, MMS, IIT Roorkee.
  11. ”Ion Damage in Crystal Bar Zirconium: Defining the Role of Crystallographic Orientations and Developments in sub-surface Residual Stresses” R. Ajay Kumar, A.S.Panwar, I. Samajdar, K.V. Mani, R. Tewari, D. Srivastava and G.K. Dey, ASTM international-2013,Hyderabad, India..
  12. “Orientation Sensitivity of Ga+ Ion Damage Direct Observations and Molecular Dynamics (MD) Simulations” R. Ajay Kumar, A.S. Panwar, I. Samajdar, K.V. Mani, R. Tewari, D. Srivastava and G.K. Dey, ICOTOM-16, 2011, IIT Bombay, India.
Thesis Supervised:
  1. Number of Ph.D. Supervised: 0
  2. Number of M.Tech. Supervised: 2
  3. Number of B.Tech. Supervised: 2
Memberships
  1. Member of Electron Microscope Society of India
  2. Member of American Society for Testing and Materials
  3. Member of Indian Institute of Metals
  4. Life member of IIT Bombay Alumni Association
  5. Life member of IIT Roorkee Alumni Association
  6. Life member of JNTU Hyderabad Alumni Association
Achievements and Awards
  1. “Effect of Orientation Sensitivity with Ga+ Ion Damage: Direct Observations and Molecular Dynamics (MD) Simulations” R. Ajay Kumar, A.S. Panwar, I. Samajdar, K.V. Mani, R. Tewari, D. Srivastava and G.K. Dey, Material Research symposium-2012, MEMS, IIT Bombay. Best oral presentation award in Material Research symposium-2012, MEMS, IIT Bombay, India.
  2. “Microstructural studies on Zirconium and its alloys” A.K. Revelly, National Seminar On Chemistry - The Central Science, 2017, Girraj Govt. College, Nizamabad, Telangana. Awarded with Best oral presentation
Additional Responsibilities at RGUKT Basar:
  1. Coodinator, Techfest (AntarPragyna-2017)
  2. Co-Convenor, Techfest- 2018
  3. Additional Chief Warden 2019-20
  4. Placement coordinator-2019-20
Sophisticated analytical instruments expertise (independent user)
  1. FEI TM Quanta 3d-FEG (field emission gun) dual-beam SEM (scanning electron microscope) and FIB (focused ion beam): Crystallographic orientation
  2. EDX, WDX technique of commercial TSL-EDSTM: Elemental mapping, weight percentage of elements
  3. PANalyticalTM XRD instruments: Bulk texture measurement, Residual stress, Dislocation density, GIXRD
Scientific Computing and Numerical Skills
  1. Molecular Dynamics Simulations : LAMMPS package, Elastic constants, Stress calculations, Energy minimization, dislocations and displacement profiles
  2. MATLAB : Numerical calculations and Data analysis
  3. SRIM : Prediction of depth profiles
  4. Crystal analysis tool : Used to calculate dislocations, residual stress distribution
  5. OVITO and ParaView : Visualization of atomistic simulation profiles