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Shashank Shekhar
PhD (Purdue University)
Assistant Professor, Department of MSE
Research Interest
Thermomechanical Processing, Grain boundary engineering, Machining, Surface engineering
Office
FB-411,
Department of Materials Science and Engineering
IIT Kanpur,
Kanpur 208016
Specialization
Severe Plastic Deformation, Grain boundaries, triple junctions
Education
PhD (2007) Purdue University.Thesis Title:Stability of Grain Boundary Triple JunctionsSupervisor:Prof. Alexander H. King
B.Tech (2001) IIT Bombay
Teaching Area
Manufacturing
Materials Processing
Grain Boundaries
Selected Publications
S. Abolghasem, S. Basu, S. Shekhar , J. Cai, and M.R. Shankar, Mapping Subgrain Sizes Resulting from Severe Simple Shear Deformation, Acta Met. 60 (2012) 376-386.
S. Shekhar , J. Cai, S. Basu, S. Abolghasem, and M.R. Shankar, Effect of Severe Plastic Deformation in Machining Elucidated via Rate-Strain-Microstructure (RSM) Mappings, (accepted for publication) Journal of Manufacturing Science and Engineering- Transactions of ASME (2012).
S. Shekhar, J. Cai, S. Basu, S. Abolghasem, and M.R. Shankar, Effect of Strain-rate in Severe Plastic Deformation on Microstructure Refinement and Stored Energies, J. Mater. Res. 26 (2010) 395-406.
S. Shekhar, Alexander H. King, Strain Fields and Energies of Grain Boundary Triple Junction, Acta Materialia, 56 (2008) 5728-5736.
Alexander H. King, S. Shekhar, What Does it Mean to be Special? The Significance and Application of the Brandon Criterion, Journal of Materials Science, 41 (2006) 7625-7682.
Research Result
Machining is known to impart very large deformation not only on the chips that come out, but also on the surface of the work-piece. Since machining allows handle over velocity as well as rake angle, one can modulate strain, strain-rate and the induced temperature during such large deformation. This leads to myriad of microstructural transformations of the chip and the surface. In our recent work we have shown that such microstructural transformation have large effect on the mechanical as well as the functional properties (corrosion and oxidation) of the material
Extra Curricular Activities
Trekking
Research Group
Structural NanomaterialsAutomotive materials and manufacturing
Professional Experience
Post-doc (2008-2011): University of Pittsburgh, USA