Thickness influence on creep properties for Ni-based superalloy M247LC SX

► Thickness reduction decreases the creep strength of M247LC SX. ► Aluminized coated specimens show less scattering in creep and is recommended. ► Tests in air have same performance as in vacuum, but different oxide formation. ► Variations in material preponderates much more for thin specimens. ► For turbine blade design the influence of specimen thickness must be considered.