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PhD Scholars

  • Athira K. S.

    Athira submitted her dissertation recently (December 2023) on welding response of precipitation strengthened superalloys. Her work brought out the critical role played by fine grain boundary precipitates on the microstructure and properties of welded and post weld heat treated Ni-base superalloys. In contrast to Ni-base alloys, she showed that the precipitation of the gamma prime phase in a recently developed Co-base superalloy happens very rapidly during weld cooling and it leads to a very different welding response. While some findings were rationalized based on thermodynamics and kinetics, some are still being worked out.

  • Vivek Chaitanya Peddiraju

    Vivek is studying phase separation in thin films of metastable immiscible systems (e.g., Ag-Cu). These systems exhibit interesting functional and mechanical properties, and Vivek is finding out how spinodal decomposition in these films interacts with substrate reaction and capillary driven (i.e., related surface and interfacial energies) phenomena such as dewetting.

  • Ambe Radha

    Radha studies welding and high temperature properties of Al-alloyed HEAs. She has carried out a systematic study the effects of post-deformation annealing on precipitation. Her work should clarify issues regarding nucleation and growth of competing precipitate phases in the system and consequently on the mechanical properties at room and elevated temperatures.

MTech Scholars

  • Lakhvinder Khairwal

    Lakhvinder is looking at the effect of welding variables on microstructure and mechanical properties of the Ni-base superalloy Haynes-282.

Past PhD Scholars

  • Pankaj (Jointly with SB)

    Pankaj's work established a computational methodology to study morphological evolution in binary nanoparticles (BNPs). He developed an embedded domain phase field model for studying phase separation in finite systems using FFT-based algorithms. The work highlighted a connection between BNP morphologies (e.g., core-shell, Janus, inverse core-shell) and variables such as temperature, composition, particle size and contact angle.

  • Upender Sunkari (Jointly with PPB)

    I was the co-adviser of Upender who worked on Nb-bearing high entropy alloys (HEAs). His work highlighted how attractive combinations of strength ductility in Co-Cr-Fe-Ni based HEAs can be achieved by combining alloy design and thermomechanical processing.

Past MTech Scholars

  • Indu Kolapalli

    Worked jointly with Dr. Dheepa Srinivasan at the Pratt&Whitney R&D Center on AM of superalloy XH67.

  • Akhil Vyas

    Worked on physical metallurgy of high-alloy (Ni, Mo, Cr) steels.

  • Banoth Santhosh

    Went on to complete his PhD from TMU (Japan)on additive manufacturing of superalloys. Currently a postdoc at IIT Bombay.

  • Desuru Sreejagadeesh

    Jagadeesh did his project with me on weld deposition of nickel on titanium. He is working with the Nissan India group now.

  • Yashobanta Satapathy
  • Parchuri Pradeep

    Pradeep's project with me was on dissimilar metal welding. He then did his PhD from JWRI, Osaka University, and is currently working with Suzuki.