During tensile creep finite element analysis of the wavelet

By means of the tensile creep property measurement of alloy oriented single crystal nickel-based superalloy and microstructure observation, the characteristics of microstructure evolution to determine. Using the stress-strain finite element method (FEM) for calculating the von Mises stress in the coherent interface of the cubic γ´/γ phases, the influence of the applied stress on the stress distribution of the cubic γ´/γ phases is investigated for validating the regularity of γ´ phase directional coarsening. And innovative use of second generation wavelet and finite element methods to solve the micro areas with metal creep conditions. Results show that the distribution of the von Mises stress in the cubic γ´/γ interfaces may be changed by the applied stress, Occurrence of different crystal lattice contraction and expansion strain of surface, which, the lattice expanding strain on planes under the action of the applied stress may trap the Al, Ti atoms with bigger radius to promote the directional growth of γ´ phase along the normal direction of the expanding lattice, after the alloy crept is identified as the γ´ phase transformed into the layer-structure along the direction perpendicular to the stress axis. This is thought to be the regularity of γ´ phase directional coarsening during creep of the alloy, furthermore, proposing the driving force of the elements diffusing and γ´ phase directional coarsening.