Effect of Pre-damage on Creep Crack Growth Behavior for Directionally Solidified Ni-base Superalloy based on Numerical Analysis

Directionally solidified Ni-base superalloy is used for gas turbine blades for high efficiency thermal power plant. There are many studies using a smooth specimens for directionally solidified Ni-base superalloy. However, these are not so many researches which concern the mechanical behavior of a notched specimen. From the view point of application to actual components, it is important to conduct the research for a notched specimen. And,...