Light Metals and alloys Research Lab
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
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
Latest Publications
Deformation assisted (1011)-(1012) double twins with Σ23b and Σ15a coincident site lattice boundaries in magnesium, Prakash C. Gautam, Somjeet Biswas, Materials Today Communications, https://doi.org/10.1016/j.mtcomm.2024.108949
Role of precipitate-induced {1012}〈1011〉 twins on anisotropic fracture behavior in Mg-3Al-0.5Ce alloys, Prakash C. Gautam, Somjeet Biswas, Theoretical and Applied Fracture Mechanics, https://doi.org/10.1016/j.tafmec.2024.104350
Activation of contraction twins during compression and related texture characteristics in α-titanium, Devesh Kumar Chouhan, Laszlo S. Toth, Somjeet Biswas, Materials Characterization, https://doi.org/10.1016/j.matchar.2024.114123
The synergy between texture evolution and grain refinement in a BCC steel, Alok Kumar Singh, Basudev Bhattacharya, Devesh Kumar Chouhan, Badirujjaman Syed and Somjeet Biswas, Philosophical Magazine, https://doi.org/10.1080/14786435.2023.2291723
High strength, ductility and sheet formability by normalizing and quenching of low carbon microalloyed dual-phase steel, Alok Kumar Singh , Basudev Bhattacharya , Somjeet Biswas, Materials Science & Engineering A, https://doi.org/10.1016/j.msea.2023.145848
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 & Engineering A, https://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, Devesh Kumar Chouhan, Soumita Mondal, Basudev Bhattacharya, Somjeet Biswas, International Journal of Plasticity, https://doi.org/10.1016/j.ijplas.2023.103516
Latest Patents
System and method to produce nanostructure titanium with high strength and ductility combination by adapting ambient temperature multiaxial-plane-strain forging, S. Biswas, D.K. Chouhan, A.K. Singh, A.J. Shukla , 2024/5/7, 537024., 201931045383.
A Semi-automatic metallographic sample preparation system, Somjeet Biswas. Devesh Kumar Chouhan, Jugal K Banikya, 2024/4/13, 526373, 201931038369.