The main research interestes of our group are developing porous and hybrid materials using powder metallurgy and casting routes and analyze their microstructure - properties correlations. At present our main focus areas are as follows:

- Processing of porous ceramic materials with tailorable pore morphologies and pore volume fractions using different powder metallurgical routes
- Processing of metal/ceramic composite materials having interpenetrating structure and with a wide range of phase architectures to develop custom made composite materials consisting of different metallic alloy and ceramic combinations
- Non-destructive analysis of the structure and properties of the developed porous and composite materials, which include micro computer tomography to perform three dimensional bulk structural analysis, ultrasonic phase spectroscopy to determine the complete stiffness tensor of complex non-isotropic materials etc.
- Mechanical and thermal property analysis of hybrid materials at room and elevated temperatures to develop microstructure - property correlations
- Stress analysis in composite materials using energy dispersive synchrotron radiation to study the processing induced residual stresses as well as the mechanism and extent of load transfer from one phase to another

All Publications

Effect of SiC particle size on the strength and stiffness of porous Si3N4 SiC composites fabricated via a low-temperature sintering process by Siddharth, Jana P., Dietrich S., Roy S. Materials Science and Engineering A 864 - (2023)
Review on development of metal/ceramic interpenetrating phase composites and critical analysis of their properties by Kota N., Charan M. S., Laha T. , Roy S. Ceramics International 48 1451-1483 (2022)
Effect of substrate surface roughness on the microstructure and properties of laser surface cladding of Tribaloy T-400 on mild steel by Nayak M.K., Roy S., Manna I. Surface and Coatings Technology 455 - (2023)
Elastic properties of porous silicon nitride fabricated via a low-temperature processing route by Kota N., Jana P., Roy S. Ceramics International 49 7066-7079 (2023)
Systematic study of the effect of K2TiF6 flux content on the microstructure and mechanical properties of Al B4C composites by Kumar C., Sarkar S., Mukhopadhyay G., Chakraborti P.C., Sen I., Roy S. Materials Science and Engineering A 871 - (2023)
Development of functionally graded ZrB2 B4C composites for lightweight ultrahigh-temperature aerospace applications by Naik A.K., Nazeer M., Prasad D.K.V.D., Laha T., Roy S. Ceramics International 48 33332-33339 (2022)
Review on development of functionally graded composite materials by Sai C. M., Ajit N. K., Navya K. , Laha T. , Roy S. International Materials Reviews - (2022)

Completed Projects

Principal Investigator

Development of a novel technique for fabricating W/dissimilar metal graded composites using interlayers by laser direct energy deposition Anusandhan National Research Foundation (ANRF)
External use of combined stir casting/squeeze casting/centrifugal casting furnace Various Institutes/Organisations
Novel crack-free wear and oxidation-resistant Co-basis TribaloyTM T800 alloy development by laser material deposition Science and Engineering Research Board (SERB)