CAO Juan,WANG Yan-rong,SHI Duo-qi(School of Jet Propulsion,Beijing University of Aeronautics and Astronautics,Beijing 100191,China)
Abstract:
Considering the influence of typical microstructure characteristics on creep performance,a series of UM-F single crystal alloys which had similar element components but different microstructures were used to analyze the relationship between creep life and microstructure characteristics of Ni base single crystal.Three main factors were proposed:misfit,volume fraction of precipitate and maximum matrix channel width.The Microstate parameter Ymicro was established to estimate the deformation state of the materi...