PhD Scholars
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- 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.
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- 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.
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