Professor

(Currently Visiting Professor at University of Utah, Salt Lake City)
Department of Metallurgical and Materials Engineering
Indian Institute of Technology Madras
Chennai 600036 INDIA

Lab: Materials Joining Lab, Central Workshop
Phone: +91 (44) 22574760
Fax: +91 (44) 22570509
e-mail: kpr [at] iitm.ac.in

 

Publications in International Refereed Journals


1.    F. D'Elia, C. Ravindran, K. Prasad Rao, Evaluation of hot cracking in AZ91E and AE42 magnesium alloys, Canadian Metallurgical Quarterly (ISSN: 00084433), available online: 01 May 2012, DOI: 10.1179/1879139512Y.0000000009

 

2.    D. Sreekanth, N. Rameshbabu, K. Ramaswamy Choudary, K. Prasad Rao, The role of electrolyte additives on the corrosion behavior of ceramic coatings formed on ZM21 magnesium alloy by plasma electrolytic oxidation, Materials Science Forum Vol. 710 (2012) pp 683-688, doi:10.4028.

 

3.    K.PrasadRao, R.Damodaram, H.Khalid Rafi, G.D. Janaki Ram, G.Madhusudhan Reddy, R.Nagalakshmi, Friction surfaced stellite6 coatings, Materials characterization (In Press)

 

4.    Prasad rao K , ArunSankar, Khalid Rafi, Janaki Ram G.D, Madhusudhan Reddy G, Friction surfacing on non-ferrous substrates: A feasibility study, International Journal of Advanced Manufacturing Technology (In Press)

 

5.    H.KhalidRafi, G.Phani Kumar, K.PrasadRao, Corrosion resistance of friction surfaced AISI 304 stainless steel coatings, Journal of Materials Engineering and Performance (In Press)

 

6.    H.KhalidRafi, G.Phani Kumar, K.PrasadRao, Microstructural evolution during friction surfacing of austenitic stainless steel AISI304 on low carbon steel, Metallurgical and Materials Transactions A (In Press)

 

7.    H. Khalid Rafi, G. Phanikumar and K. Prasad Rao, Material Flow Visualization during Friction Surfacing, Metallurgical and Materials Transactions A, Vol. 42,  No. 4, Pages 937-939 (2011).

 

8.    N. Ramanaiah, K. Prasad Rao, Effect of modified AA4043 filler on corrosion behavior of AA6061 alloy GTA welds , International Journal of Advanced Manufacturing Technology, (Accepted) DOI 10.1007/s00170-012-4121-4.

 

9.    S.G,K, Manikandan, D. Sivakumar, M. Kamaraj, K. Prasad Rao, Laves Phase control in Incinel 718 Weldments, Materials Science Form 710 (2012) 614-619, DOI 10.4028.

 

10. S. Babu, G.D. Janaki Ram, P.V. Venkitakrishnan,G. Madhusudhan Reddy and K. Prasad Rao, Microstructure and Mechanical Properties of Friction Stir Lap Welded Aluminum Alloy AA2014" Journal of Materials Sciences and  Technology (Accepted).

 

11. K. Prasad Rao, A. Veera Sreenu, H. Khalid Rafi, M.N. Libin, Krishnan Balasubramaniam,  Tool steel and Copper Coatings by Friction Surfacing - A Thermography study,   Journal of Materials Processing Technology  212(2012) 402-407.

 

12. H.Khalid Rafi, Krishnan Balasubramaniam, G. Phanikumar, K. Prasad Rao, Thermal Profiling using Infrared Thermography in Friction Surfacing,Metallurgical and Materials Transactions A (June2011),1-5.doi:10.1007/s11661-011-0750-8.

 

13. K. Surekha, B.S. Murty, K. Prasad Rao,  Comparison of corrosion behaviour of friction stir processed and laser melted AA 2219 aluminium alloy, Materials & Design,  32,   (2011) 4502-4508.

 

14. M. Ashfaq,   K. Prasad Rao,   M. Khalid Rafi,  BS Murty,  HC Dey,  AK Bhaduri, Friction welding of titanium to 304L stainless steel by using intermediate layers Practical Metallography 48    (2011)188-207 .

 

15. Biju S. Nair, S. Rakesh, G. Phanikumar, K. Prasad Rao, P.P. Sinha, Fracture toughness (J1C) of electron beam welded AA2219 alloy  , Materials & Design,  31( 2010)  4943-4950.

 

16. H. Khalid Rafi, G. D. Janaki Ram , G. Phanikumar and K.Prasad Rao, Microstructure and Properties in Friction Surfaced Stainless Steel and Tool Steel Coatings, Materials Science Forum Vols. 638-642 (2010) 864-869.

 

17. H. Khalid Rafi, G. D. Janaki Ram, G. Phanikumar and K.Prasad Rao, Microstructure and tensile properties of friction welded aluminum alloy AA7075-T6. J Mater Design 31(2010) 2375-2380.

 

18. H. Khalid Rafi, G. D. Janaki Ram, G. Phanikumar and K.Prasad Rao, Friction surfaced tool steel (H13) coatings on low carbon steel- A study on the effects of process parameters on coating geometry and bond integrity. Surface and Coatings Technology, 205(2010) 232-242.

 

19. H. Khalid Rafi, G. D. Janaki Ram , G. Phanikumar and K.Prasad Rao, Microstructural evolution during friction surfacing of tool steel H13. Materials and Design DOI:10.1016/J.Matdes.2010.06.031

 

20. K.Prasad Rao, G.D. Janaki Ram, B.E. Stucker, Effect of friction stir processing on corrosion  resistance of aluminum–copper alloy gas tungsten arc welds, Materials & Design, 31 (2010)  1576-1580.

 

21. Prasad Rao Kalvala, Anand Patil, RaghuRaj Rangaraju, K.S.Raja, M.Misra , Particle Distribution and Tool Wear in Friction Stir Processed Al-Si C p Coatings, Prakt.    Metallogr. 47 (2010) 1-10

 

22. Sudheer Baral, Raghu Raj Rangaraju, Mr. Anand Patil, Prasad Rao Kalvala, K.S. Raja & M. Misra,  Comparison of Micro Arc Oxidation and Friction Stir Processed Coatings on Aluminum Alloy, Plating & Surface Finishing (In press)

 

23. G. Madhusudhan Reddy, C.V. Srinivasa Murthy, A. Sambasiva Rao , K. Prasad Rao: Microstructural Studies  on  Electron Beam welded Inconel 718, Practical Metallography, (accepted)

 

24. H.C. Dey, M. Ashfaq, A.K. Bhaduri, K. Prasad Rao, Joining of titanium to 304L stainless steel by friction welding, Journal of Materials Processing Technology,  209,   (2009)  5862-5870

 

25. K. Surekha, B.S. Murty, K. Prasad Rao, Effect of processing parameters on the corrosion behaviour of friction stir processed AA 2219 aluminum alloy Solid State Sciences, 11 (2009) 907-917

 

26. G. Madhusudhana Reddy, C. V. Srinivasa Murthy , K. Srinivasa Rao and K. Prasad Rao , Improvement of mechanical properties of Inconel 718 electron beam welds-influence of welding techniques and postweld heat treatment,   International Journal of Advanced Manufacturing Technology 43, (2009) 671-680

 

27. K. Prasad Rao, G.D. Janaki Ram and B.E. Stucker, Improvement in corrosion resistance of friction stir welded aluminum alloys with micro arc oxidation coatings, Scripta Materialia,  58,   (2008)  998-1001

 

28. K. Surekha, B.S. Murty and K. Prasad Rao, Microstructural characterization and corrosion behavior of multipass friction stir processed AA2219 aluminium alloy, Surface and Coatings Technology, 202, (2008), 4057-4068

 

29. S.R. Koteswara Rao, G. Madhusudhan Reddy and K. Prasad Rao, Effects of thermo-mechanical treatments on mechanical properties of AA2219 gas tungsten arc welds, Journal of Materials Processing Technology,  202 (2008)  283-289

 

30. Selvi Dev, B.S. Murty , K. Prasad Rao,Effects of Base and Filler Chemistry and Weld Techniques on Equiaxed Zone Formation in Al-Zn-Mg alloy welds, Science and Technology of Welding & Joining, 13, (2008)  598-606

 

31. P.C.Seshagiri, G.Madhusudhan Reddy,S.Biju, K.Srinivasa Rao, K.Prasad Rao, Improvement of  Mechanical Properties of Aluminum-Copper alloy (AA2219) GTA welds by Sc  addition, Science and Technology of Welding & Joining, 13, (2008),146-158

 

32. P.C.Seshagiri, G.Madhusudhan Reddy, K.Srinivasa Rao, G.Govindaraju, K.Prasad Rao, Microstructure and Mechanical Properties of Sc Modified Aluminum-Copper alloy (AA2219) Electron beam welds, Science and Technology of Welding & Joining, 13, (2008), 415-421

 

33. K. Prasad Rao, K. Angamuthu and P. Bala Srinivasan, Fracture toughness of electron beam welded Ti6Al4V, Journal of Materials Processing Technology, 199, 2008,   185-192

 

34. K. Prasad Rao, N. Ramanaiah and N. Viswanathan, Partially melted zone cracking in AA6061 welds, Materials & Design, 29, (2008) 179-186

 

35. S.Biju,G.Phani Kumar, K.Prasad Rao, PP. Sinha, Improvement of Mechanical Properties of Gas Tungsten Arc and Electron Beam Welded AA2219 (Al-6%Cu wt%) alloy,  Science and Technology of Welding & Joining, 12 , (2007), 579-585

 

36. G.Madhusudhan Reddy, C.V, Srinivasa Murthy, N.Viswanathan., K.Prasad rao, Effect of Electron Beam Oscillation Technique on solidification behaviour and Stress Rupture properties  of Inconel 718 Welds, Science and Technology of Welding and Joining, 12 (2007),106-114

 

37. P. Naga Raju, K. Srinivasa Rao, G.M. Reddy, M. Kamaraj, K. Prasad Rao, Microstructure and high temperature stability of age hardenable AA2219 aluminium alloy modified by Sc, Mg and Zr additions, Materials Science and Engineering A 464 (2007) 192–201

 

38. K. Gurumoorthy,  M. Kamaraj, K. Prasad Rao, S.Venugopal, Development and use of combined wear testing equipment for evaluating galling and high stress sliding wear behaviour,   Materials & Design,  28 (2007) 987-992

 

39. K. Gurumoorthy, M. Kamaraj, K. Prasad Rao, A. Sambasiva Rao, S. Venugopal, Microstructural aspects of plasma transferred arc surfaced Ni-based hardfacing alloy, Materials Science and Engineering: A, Materials Science and Engineering: A, V  456 (2007),  11-19

 

40. Venkateswaran, K. / Kamaraj, M. / Prasad Rao, K., Dry Sliding Wear of a Powder Metallurgy Copper-based Metal Matrix Composite Reinforced with Iron Aluminide Intermetallic , Journal of Composite Materials, 41 (2007) 1713-1728,  doi:10.1177/0021998306069888

 

41. Selvi Dev, A. Archibald Stuart, R.C. Ravi Dev Kumaar, B.S. Murty , K. Prasad Rao, Effect of scandium additions on microstructure and mechanical properties of Al–Zn–Mg alloy welds, Materials Science and Engineering: A,  467,  (2007) 132-138

 

42. K. Gurumoorthy, M. Kamaraj, K. Prasad Rao and S.Venugopal, Microstructure and wear properties of Nickel-based hardfacing alloys, Materials Science and Technology, 22 ( 2006) 975-980

 

43. K.Venkateswaran, M.Kamraj, K.Prasad Rao, Wear behavior of Fe3Al intermetallic particle reinforced P/M based iron metal matrix composites, Powder Metallurgy, 49, (2006), 374-379

 

44. C. Padmavathi, J. K. Sarin Sundar, S. V. Joshi and K. Prasad Rao,Effect of pulsed Nd:YAG laser melting treatment on microstructural and corrosion behaviour of AZ91C Mg alloy, Materials Science and Technology  22 (2006) 583-589

 

45. K. Srinivasa Rao and K. Prasad Rao, Corrosion resistance of AA2219 aluminium alloy: electrochemical polarisation and impedance study, Materials Science and Technology 22 (2006) 97-104

 

46. C.Padmavathi, J.K.Sarin Sundar  ,S.V.Joshi, and K.Prasad Rao, Improving wear resistance of cast AZ91C magnesium alloy by surface melting techniques, Trans. Indian Inst. Met., 59 (2006), 99-106

 

47. G.D. Janaki Ram, A. Venugopal Reddy, K. Prasad Rao ,G. Madhusudhan Reddy , and A. Sambasiva Rao ,Effect of magnetic arc oscillation on microstructure and properties of Inconel 718 GTA welds, Trans. Indian Inst. Met.,59 (2006) 85-97

 

48. G.D. Janaki Ram, A. Venugopal Reddy, K. Prasad Rao and G. Madhusudhan Reddy, High temperature mechanical properties of Inconel 718 pulsed Nd-YAG laser welds, Materials at High Temperatures, 23 (2006)

 

49. B. Vamsi krishna, P. Venugopal, K. Prasad rao, Solid state joining of steel-Cu P/M preform tubes:use of interlayer and post joining heat treatments, Journal of Materials Science,  41 (2006) 1175–1185

 

50. S.R. Koteswara Raoa,, G. Madhusudhana Reddy, M. Kamaraj , K. Prasad Rao, Grain refinement through arc manipulation techniques in Al–Cu alloy GTA welds, Materials Science and Engineering A 404 (2005) 227–234

 

51. S. R. Koteswara Rao, G. Madhusudhan Reddy, P. Srinivasa Rao,M. Kamaraj, K. Prasad Rao, Improving mechanical properties of 2219 aluminium alloy GTA welds by scandium addition, Science and Technology of Welding and Joining 10 (2005) 418-426

 

52. G. D. Janaki Ram, A. Venugopal Reddy, K. Prasad Rao and G. Madhusudhan Reddy, Microstructure and mechanical properties of Inconel718 electron beam welds, Materials Science and Technology, 21 (2005) 1132-1138

 

53. G.D. Janaki Ram, A. Venugopal Reddy, K. Prasad Rao, G.M. Reddy, J.K. Sarin Sundar, Microstructure and tensile properties of Inconel 718 pulsed Nd-YAG laser welds, Journal of Materials Processing Technology 167 (2005) 73–82

 

54. K. Srinivasa Rao, K. Prasad Rao. Fusion zone of AA6061 alloy GTA welds: electrochemical polarisation and impedance study Materials Science and Technology 21 (2005) 1003-1009

 

55. K. Srinivasa Rao, K. Prasad Rao, Microstructure and pitting corrosion of partially melted zones of Al alloy GTA welds Materials Science and Technology 21 (2005) 1199-2008

 

56. S.R. Koteswara Rao   G. Madhusudhan Reddy  , K. Srinivasa Rao  ,M. Kamaraj  , K. Prasad Rao,  Reasons for superior mechanical and corrosion properties,of 2219 aluminum alloy electron beam welds, Materials Characterization 55 (2005) 345– 354

 

57. K. Srinivasa Rao, , G. Madhusudan Reddy, K. Prasad Rao, Studies on partially melted zone in aluminium–copper alloy welds—effect of techniques and prior thermal temper, Materials Science and Engineering A, 403 (2005) 69–76

 

58. K. Srinivasa Rao, K. Prasad Rao, Partially melted zone in Al–Mg–Si alloy gas tungsten arc welds: effect of techniques and prior thermal temper, Materials Science and Technology 21 (2005) 995-1002

 

59. Nikhil Rangaraju, T. Raghuram, B. Vamsi Krishna, K. Prasad Rao and P. Venugopal, Effect of Cryo-rolling and Annealing on Microstructure and Properties of commercially Pure Aluminium, Materials Science & Engineering A,  398 (2005) 246-251

 

60. G.D. Janaki Ram A. Venugopal Reddy, K. Prasad Rao and G. Madhusudhan Reddy, Improvement in stress rupture properties of Inconel 718 GTA welds using current pulsing, Journal of Materials Science, 40 (2005) 1497 – 1500

 

61. G.D. Janaki Ram, A. Venugopal Reddy, K. Prasad Rao and G. Madhusudhan Reddy. Microstructural characterisation of Inconel 718 gas tungsten arc welds, Practical Metallography,   42, (2005) 481-498

 

62. N. Ramanaiah, K. S. Rao, B. Guha and K. Prasad Rao,  Effect of modified AA4043 filler on partially melted zone cracking of Al-alloy gas tungsten arc welds, Science and Technology of Welding and        Joining 10 (2005)  591-596

 

63. S.R.Koteswara rao, G.Madhusudhan reddy, K.Srinivasa rao, P.Srinivasa rao, M.Kamaraj, K.Prasad rao, Gas tungsten arc welded AA 2219 alloy using scandium containing fillers - mechanical and corrosion behavior, Trans. Indian inst. Met., 57 ( 2004)  451-459

 

64. K.Srinivasa Rao, N.Sreedhar,B.Madhusudana Rao and K.Prasad Rao, Protection of AA6061 Alloy from combined environmental corrosion for Aerospace applications. Transactions of Indian Institute of Metals, 57 (2004) 79-83

 

65. T.Venugopal, K. Srinivasa Rao and K. Prasad Rao “Studies on friction stir welded AA 7075 aluminum alloy” Transactions of Indian Institute of Metals,  57 (2004) 659-663

 

66. G.D. Janaki Ram, A. Venugopal Reddy, K. Prasad Rao and G. Madhusudhan Reddy, Control of Laves phase in Inconel 718 GTA welds with current pulsing, Science  and Technology of Welding and Joining, 9 (2004) 390-398 

 

67. K.Srinivasa Rao,N.Sreedhar,B.Madhusudana Rao and K.Prasad Rao:  Effect of Pre-Treatment on Corrosion resistance of chromate coated and  anodized AA2219 Alloy, Transactions of Indian Institute of Metals, 57(2004)  133-140

 

68. K.Srinivasa Rao and K.Prasad Rao: Pitting Corrosion of Heat treatable Aluminium alloys and Welds- A Review. Transactions of Indian Institute of Metals, 57 (2004)   593-610