Influence of rotation and temperature on creep strain rates in steel and cast iron disks

Abstract This study investigates the influence of rotation on thermal creep strain rates in steel and cast iron disks using Seth's transition theory. The analysis considers varying angular speeds and thermal effects to understand their combined impact on deformation. Results reveal that higher angular speeds increase strain rates, with cast iron exhibiting lower strain accumulation compared to steel due to its material properties. Thermal effects amplify strain at the inner surface while reducing stress buildup, mitigating deformation at elevated temperatures. The findings underscore the complex interplay of rotational speed, thermal conditions, and material characteristics, providing insights into the structural integrity of rotating disks under operational conditions.