Shetti Swamy

Designed lightweight austenitic Fe-Mn-Al-C-Cr-Si steels utilizing an integrated CALPHAD, machine-learning-assisted screening, and experimental approach.

Established composition-processing-property relationships by predicting stacking fault energy, phase stability, density, solidification behavior, microsegregation, and precipitation behavior.

Developed thermo-mechanical processing routes, including hot/cold rolling and controlled annealing, to tailor recrystallization, grain structure, and carbide precipitation.

Achieved stable austenitic microstructures with high strain-hardening capacity and PSE > 50 GPa·%, outperforming conventional TWIP and dual-phase steels.

Demonstrated enhanced tribological performance, including superior wear resistance under severe deformation, validated via SEM, EBSD, XRD, TEM, and surface profilometry.

Quantified dry sliding wear behavior of carbide-free bainitic (CFB), Med-Mn, Hadfield, and Hardox-450 steels using pin-on-disk tribometry, establishing microstructure-tribology relationships.

Investigated autogenous welding of CFB steel, examining microstructural evolution in weld and heat-affected zones to assess wear performance.

Linked welding-induced microstructural changes to tribological response, informing the design and welding of wear-resistant AHSS components for automotive, mining, rail, and heavy-engineering applications.

Developed a thermodynamics-based framework to predict phase constitution, clustering, and phase separation in HEAs using binary Gibbs energy-composition (G-x) analysis via Thermo-Calc software.

Formulated new parameters derived solely from binary thermodynamic data, enabling efficient screening of multicomponent HEAs and addressing empirical rule limitations.

Applied method to Cu-containing FCC HEAs (CuFeMnNi, CoCuFeMnNi, CoCrCuFeNi, CrCuFeMnNi) and successfully correlated parameter R with experimentally observed single-phase stability, nanoclustering, and dual-FCC phase separation.

Demonstrated that competition between binary unmixing tendency and single-phase stabilization governs microstructural evolution in HEAs, providing a practical thermodynamic design tool for controlling clustering and phase separation.

Designed and developed Ni-X (X = Al, Cr, Cu, Mo, Ni) diffusion barrier systems for mid-temperature thermoelectric modules, targeting interfacial stability and contact resistance reduction.

Synthesized diffusion barriers via thermal evaporation, hot-pressing, and electrodeposition, enabling comparative assessment of processing-property relationships.

Conducted microstructural and interfacial characterization using optical microscopy (OM) and SEM, including coating thickness and interface integrity analysis.

Assessed mechanical reliability through microhardness profiling across barrier and substrate regions and evaluated functional performance by measuring electrical contact resistance using a Potential Seebeck Instrument.

Developed Stellite-6 hard-facing overlays on F55 duplex stainless-steel pipes using GTAW and PTA welding techniques.

Conducted detailed microstructural characterization using optical microscopy (OM), SEM, and EDS to study phase evolution, carbide morphology, and elemental distribution.

Evaluated mechanical performance through microhardness testing, assessing hardness gradients across the overlay and substrate.

Developed Ni-Mo coating on Pb-Te thermoelectric module using different Nickel salts via electrodeposition method, analyzing coatings using OM, SEM, EDS, and XRD.

Performed Vickers hardness tests on developed coatings, demonstrating good resistance to diffusion of PbTe into the module and contact resistance.

Identified potential applications in automotive waste heat recovery, space industry, military, and remote power supplies.