Grain Boundary Engineering (GBE) is a process consisting of deformation-anneal iterations that increase special boundaries, especially the... Show moreGrain Boundary Engineering (GBE) is a process consisting of deformation-anneal iterations that increase special boundaries, especially the fraction of Σ3 boundaries, to improve material properties such as corrosion resistance, intergranular fracture resistance or ductility. In this work, Inconel 600 super alloy was chosen as the research material. Different levels of compression at various temperatures followed by a subsequent anneal were used on the Inconel 600 to investigate the respective Σ3 boundary fractions as a function of processing. Orientation Image Microscopy (OIM) was applied to scan, observe and analyze the microstructures of the samples before and after deformation. The work was aimed at investigating the effect of hot deformation on the Σ3 boundary fraction in Inconel 600 and understanding the mechanisms of Grain Boundary Engineering. The formation of twins was studied with emphasis on their formation following elevated temperature deformation. M.S. in Material Science and Engineering, December 2013 Show less
