A5055379339- High Entropy Alloys Studies
- High-Temperature Coating Behaviors
- Microstructure and mechanical properties
- Additive Manufacturing Materials and Processes
- Metallurgy and Material Forming
- Microstructure and Mechanical Properties of Steels
- Advanced materials and composites
- Crystallization and Solubility Studies
- Aluminum Alloy Microstructure Properties
- X-ray Diffraction in Crystallography
- Metal and Thin Film Mechanics
- Intermetallics and Advanced Alloy Properties
- High Temperature Alloys and Creep
- Advanced Materials Characterization Techniques
- Aluminum Alloys Composites Properties
- Physics of Superconductivity and Magnetism
- Metal Forming Simulation Techniques
- Hydrogen embrittlement and corrosion behaviors in metals
- Metallurgical and Alloy Processes
- Superconducting Materials and Applications
- Copper Interconnects and Reliability
- Magnetic Properties and Applications
- Magnesium Alloys: Properties and Applications
- Inorganic Chemistry and Materials
- Advanced Thermoelectric Materials and Devices
Indian Institute of Technology Hyderabad
2016-2025
MNR Medical College and Hospital
2021
Kyoto University
2018
Defence Metallurgical Research Laboratory
2015
National Metallurgical Laboratory
2012
Osaka University
2008-2009
Indian Institute of Technology Kanpur
2005-2008
Deakin University
2008
Indian Institute of Technology Indore
2005
The development of microstructure and mechanical properties was investigated in a heavily cold-rolled annealed AlCoCrFeNi2.1 high-entropy alloy. as-cast alloy having eutectic morphology consisting alternate bands ordered L12 B2 phases 90% cold-rolled. deformed showed profuse shear banding disordering the L12, but no transformation phase. A duplex ultrafine equiaxed grains (∼0.60 µm) disordered face centered cubic observed after annealing at 800°C. material remarkable strength–ductility...
Abstract Nano-lamellar (L1 2 + B2) AlCoCrFeNi 2.1 eutectic high entropy alloy (EHEA) was processed by cryo-rolling and annealing. The EHEA developed a novel hierarchical microstructure featured fine lamellar regions consisting of FCC lamellae filled with ultrafine grains (average size ~200–250 nm) B2 lamellae, coarse non-lamellar nm), few recrystallized rather unrecrystallized phase (~2.5 µm). This complex originated from differences in strain-partitioning amongst the constituent phases,...
Abstract A lamellar (L1 2 + B2) AlCoCrFeNi 2.1 eutectic high entropy alloy (EHEA) was severely deformed by a novel hybrid-rolling process. During hybrid-rolling, the deformation carried out in two stages, namely cryo-rolling followed warm-rolling at 600 °C. The strain (ε) imparted each of these steps identical ~1.2, resulting total ε~2.4 (corresponding to 90% reduction thickness). processing strategy resulted an extremely heterogeneous microstructure consisting retained and transformed...
Additive Friction Stir Deposition (AFSD) is an emerging solid-state metal additive manufacturing (AM) process that offers several key benefits, including high deposition rates and wrought-equivalent mechanical properties even in the as-deposited condition. The work presented first study to report on development of microstructure AFSD-processed duplex stainless steel (DSS2507). banded starting material was remarkably affected by AFSD processing; austenite grains exhibited a refined equiaxed...
A CoCrFeMnNi high-entropy alloy (HEA) showed elongation to failure ∼320% at T = 1023 K and a strain rate . Strain hardening texture weakening occurred low , whereas flow softening strengthening were observed high experiments. The sensitivity (m) decreased from 0.5 ∼0.25 with increasing Deformation m∼0.5 deformation-enhanced grain growth indicated superplasticity associated boundary sliding. diffusion coefficient diminished by factor of ∼4 in the HEA. Concurrent nucleation, cavity...