Plate specimens were used to model turbine blades with cooling holes.Experimental and numerical study on the creep behavior of a second generation nickel-based single crystal alloy has been performed with these model specimens.The results of creep test at high temperature show that crystallographic orientations and cooling holes have noticeable influence on the creep life.Compared with that of the specimen without cooling holes

the creep life of specimen with cooling holes is lower for both and orientations.The cooling holes have larger influence on the creep life of orientation than that of orientation.The creep behavior under high temperature and low stress conditions of orientation is better than that of orientation.The finite element analysis(FEA) results reveal that the cooling holes change the stress distribution in the specimen and cause stress concentration near the holes

which results in the decrease of creep life.As the creep life obtained from FEA is accordant to the experimental result

it is reasonable to calculate the creep life using the simulation model based on the resolved slip stress.