Light Metals & 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) Multi-phase steels 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) Anisotropy and Sheet forming

Where are our scholars after PhD?

Prakash C Gautam (2024) - PDF in NTU, Taiwan https://scholar.google.com/citations?user=MxfWQtEAAAAJ&hl=en

Tapasendra Adhikari (2024) - PDF Univ de São Paulo, Brazil https://scholar.google.com/citations?user=NmrOeWgAAAAJ&hl=en

Alok K Singh (2023) - PDF in UoS, Saskatchewan, Canada https://scholar.google.co.in/citations?user=BhnW7eMAAAAJ&hl=en

Devesh K Chouhan (2021) - PDF in PNNL, Washington, USA

https://scholar.google.co.in/citations user=pUKZGSgAAAAJ&hl=en

Sudeep Sahoo (2019) - PDF at Univ de Bordeaux, FRANCE https://scholar.google.com/citations?user=LHTDmokAAAAJ&hl=en

(iii) 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,

(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 .

Latest events Workshop- Microstructure quantification & their mesoscale & atomistic modeling