Oxidation Kinetics in Ni-Cr Alloys Through Comprehensive Analysis of Parabolic and Cubic Grain Growth Dynamics and Their Implications on High-Temperature Oxidative Stability

Abstract

This study delves into the oxidation kinetics of Ni-Cr alloys, emphasizing the transition between parabolic and cubic grain growth dynamics under high-temperature conditions. Employing advanced numerical and analytical models, we elucidate the mechanisms driving oxide layer formation and stability, which are crucial for enhancing material longevity in oxidative environments. Our findings reveal significant insights into the diffusion behavior and defect dynamics within the oxide layers, proposing a model that integrates both grain boundary and volumetric diffusion processes. These results not only refine our understanding of oxidation resistance but also pave the way for the development of more robust high-temperature alloys. The study’s implications extend to improving industrial applications where high oxidation resistance is critical.