Dr. Somjeet Biswas and his team in the ‘Light Metals and Alloys Research Lab, MME, IITKGP’ is working on developing metallic materials for aerospace, automobile, and bio-implant structural applications.
Presently our main focus is to develop:
(i) Magnesium alloys for aerospace and degradable bio-implants.
(ii) Titanium alloys for aerospace and permanent bio-implants.
(iii) IF steels and DP steel sheets for automobile applications.
(iv) Advance high strength, lightweight nanostructured Al alloys for aerospace and automobiles.
Our research team is working towards deciphering the effect slip/twin induced strain hardening behavior, dynamic recovery and recrystallization on evolution of dislocations, microstructure, texture and misorientation boundaries in HCP/FCC and BCC single and dual phase metallic materials in order to improve specific properties based upon application.
Interests include:
1. Wrought metallic materials processing:
(i) Conventional thermo-mechanical processing such as rolling, forging, extrusion and sheet metal forming.
(ii) Unconventional severe plastic deformation techniques like Equal channel angular pressing (ECAP), Multi-axial forging (MAF), Accumulative roll bonding (ARB), Friction stir processing/welding (FSP/FSW), High pressure torsion (HPT), High pressure tube twisting (HPTT) and High pressure torsion extrusion (HPTE).
2. Microstructure and texture characterization:
(a) Optical microscopy
(b) X-Ray Diffraction for phase analysis, crystallite size, dislocation density, residual stress measurements(c) SEM-Imaging,
(c) Electron-back scattered diffraction in SEM.
(d) TEM imaging and diffraction exp, and
(e) X-ray Texture analysis
3. Mechanical property evolution
(i) Tensile testing, compression testing, HCF, LCF, Creep tests, FCGR growth and Fracture toughness studies are done. We have Instron ElectroPulse UTM, Zwick-roell UTM, Rumul Fatigue testing M/cs.
(ii) Instrumental nano-indentation, Micro-hardness, Rockwell and Brinell hardness tests
4. Modeling and Simulations
Polycrystalline plasticity simulation techniques are developed and used to predict the deformation induced strain hardening behavior, texture, twin variant selection and their volume fraction, interaction boundaries - coincident site lattice boundaries and the deformation mechanism .
News
New Publication in 2023
High strength-ductility combination by quenching and partitioning of a low carbon microalloyed dual-phase steel, Alok Kumar Singh, Devesh Kumar Chouhan, Basudev Bhattacharya, Somjeet Biswas, Materials Science and Engineering: A , doi.org/10.1016/j.msea.2023.144854
Role of slip and twinning on strain hardening, and correlation with geometric hardening, latent hardening, and grain boundary strengthening in Titanium; International Journal of Plasticity, Devesh Kumar Chouhan, Soumita Mondal, Basudev Bhattacharya, Somjeet Biswas, 103516; online since 12th Jan 2023; https://doi.org/10.1016/j.ijplas.2023.103516
Congratulations to Devesh Kumar Chouhan for successfully defending his PhD defence on the topic "Microstructure and texture evolution during plastic deformation of α-Titanium and associated enhancement in mechanical properties", obtaining the PhD degree and bagging a glorious postdoctoral position in Université de Lorraine, Metz, FRANCE.
You may check his work on:
https://scholar.google.co.in/citations?user=pUKZGSgAAAAJ&hl=en