http://20.198.91.3:8080/jspui/handle/123456789/111 2026-04-05T03:30:23Z http://20.198.91.3:8080/jspui/handle/123456789/9457 Title: High temperature tensile property of 316l austenitic stainless steel welding Authors: Jasim Mondal Abstract: The thesis investigates the high-temperature tensile properties of 316 austenitic stainless steel welds, focusing on their mechanical behavior at both ambient and elevated temperatures. Key properties such as tensile strength, strain hardening, ductility, and hardness are evaluated to understand how the material responds under thermal stress. The study aims to provide a comprehensive analysis of the weld's performance, particularly in environments where high-temperature resistance is critical. By examining the material's behavior under various thermal conditions, the research offers valuable insights into the weld ability and long-term durability of 316L stainless steel, making it suitable for demanding applications in industries where heat and corrosion resistance are paramount. 2024-01-01T00:00:00Z http://20.198.91.3:8080/jspui/handle/123456789/9456 Title: Study the corrosion behaviour of AA 6063 at different retrogression and re-ageing temperatures Authors: Chakraborty, Sagar Abstract: This term paper presents a comprehensive study of the corrosion behaviour and electrochemical impedance of AA6063 at different temperature aging conditions. The investigation aims to understand the effect of temperature aging on the material's electrochemical characteristics and corrosion resistance. The study involves sample preparation, electrochemical measurements using impedance spectroscopy, and data analysis. The findings contribute to a deeper understanding of the aging behaviour of AA6063 and provide valuable insights for optimizing its performance in different environments. 2024-01-01T00:00:00Z http://20.198.91.3:8080/jspui/handle/123456789/9455 Title: Development of UF membrane by coating using green synthesized copper oxide nanoparticle for remediation of heavy metals Authors: Bag, Indrajit Abstract: Copper Oxide Nanoparticles were green synthesized using extracts of Anabaena variabilis. The synthesized nanoparticles were washed, dried and kept for further use. Samples were characterized in terms of X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Field Emission Scanning Electron Microscope (FESEM), Energy Dispersive X-Ray Spectroscopy (EDS), Brunauer-Emmett-Teller (BET) etc. Average crystallite size of Nano powders was calculated from full width at half maxima of XRD Peaks. Debye-Scherrer formula was used for the calculation of crystallite size which was found to be 22.0684 nm. Spherical morphology of the NPs was confirmed from FESEM micrographs. BET surface area of CuO NPs was 3.718 m2/g. Phthalates and Paraben were used to observe removal efficiency of synthesized CuO NPs. CuO nanoparticle was used for development of UF ceramic membrane by coating on inside wall of 300mm length ceramic support (OD/ID 10/7 mm). BET Surface area of unsupported membrane was determined to be 6.355 m2/g. Flux Values of 249LMH and 230LMH for Phthalates and paraben respectively was obtained after 120mins of filtration study. Removal Efficiency of 92% & 96.3 % for phthalates and paraben was obtained. 2024-01-01T00:00:00Z http://20.198.91.3:8080/jspui/handle/123456789/9454 Title: A numerical study on solid phase transformation of a plain C-Mn steel Authors: Hazra, Amit Kumar Abstract: Study on solid phase transformation using a computational method includes numerical and mathematical modelling, has incited a lot of interest among the researchers across the globe due to its diverse and emerging applications in engineering. In addition, the advancement of materials in the recent decades has flourished, especially in case of steel due to its superior properties over the other materials and wide applications in every sector of the engineering. Such properties of the steel depend on the transformed phases during its cooling. In this context, there are several research works cited in the literature on solid transformation of phases mostly involve experimental investigations. In practice, a real time prediction of such transformation is necessary in order to control the properties of the steel, which is difficult in experimentation. Moreover, experimentation is very expensive in nature. This work, therefore, includes a numerical study on solid phase transformation of a plain C-Mn steel. It involves mathematical modelling of heat transfer, and subsequent development of a numerical code in the FORTRAN platform. The numerical code is developed based on the finite volume method (FVM) considering the Crank-Nicolson scheme for discretizing the governing equations. The subsequent solution of the finally obtained discretized simultaneous equations is performed on the basis of TDMA algorithm. Suitable boundary conditions are then considered in the present work to represent the cooling behaviour of the steel, phase transformation phenomena and evolution of the fraction of phases depending on the heating condition, holding time, and cooling condition of the material. In the model, the phase transformation is considered using the Avrami equation, which allows to calculate the fraction of transformation. Along with the transformed fraction, this work is also predicted the transformation time of each phase during cooling. The developed code is then validated with a previously cited literature. With a good agreement, this code is extended to predict the evolution of the phases during cooling of the plain C-Mn steel. Since cooling rate is a major process parameter to control the transformation of the phases, a parametric study is also included under different cooling rates. 2024-01-01T00:00:00Z