Chandrahaasan Kattuputhur Soundararajan

Thesis title: Recrystallization behavior and mechanical properties of interstitially alloyed equiatomic CoCrFeMnNi high entropy alloys. The primary objective of this work is to investigate the role of carbon in influencing the recrystallization behavior and its subsequent impact on the mechanical properties of equiatomic HEA. Utilized advanced characterization tools such as EBSD, ECCI, XRD, DIC assisted tensile test and TEM to probe the deformed and annealed microstructures.

Title: Hydrogen effect on deformation behavior of CoCrNi medium entropy alloys. The influence of hydrogen on the deformation behavior and microstructure evolution in an equiatomic CoCrNi medium entropy alloy (MEA) was investigated in detail. The resistance of the 1 GPa strong MEA against hydrogen embrittlement was investigated using tensile testing of hydrogen pre-charged samples and combined EBSD and ECCI analysis of the deformation microstructures.

Worked on the relationships between synthesis, processing, microstructure and properties of compositionally and structurally complex metallic alloys.  Applied advanced characterization methods (EBSD, ECCI, TEM, APT) and investigated the micromechanics behind recrystallization and deformation behavior in metallic alloys.

Thermodynamic modeling and database development for calculation of solidification during casting or welding and heat treatment processes. Develop a process model for a completely new process or to optimize an already existent process. New thermodynamic database development by including ab-initio (DFT) calculations at 0 K.

Develop technologically advanced product and process that enhance the product performance. Validation and testing of products for automotive and structural applications (as per ASTM, DIN, IS). New process optimization, condition monitoring and reliability engineering. Provide support to suppliers, sourcing, quality, manufacturing and engineering. Perform prototype process trials, material analysis and properties characterization. Perform process and product failure analysis investigations.

Advanced physical metallurgy; Texture analysis; Micromechanics of materials; Ferrous and Non-ferrous metallurgy; Material science of steel; Fabrication technology;

Ferrous and Non-ferrous metallurgy extractive; Physical and mechanical metallurgy; Metal forming and casting; Welding engineering; Non-destructive testing; Statistics, quality control and reliability engineering; Polymers, ceramics and composite engineering;