Crystal-plasticity-based creep modelins for Ni-based single crystal superalloy

The second part of modeling creep behavior for single crystal superalloy was presented in this paper.and a dislocation-based creep model was devoted to creep predictions.The constitutive equations described the relation between macroscopic strain rate and shear strain rate on slip systems derived from the slip theory,and the activity of various slip systems has been modeled based on the research of microscopic mechanisms.Results obtained by the present approach were compared with creep data with various temperatures and loads in different orientations,including single crystal superalloys DD3 and CMSX-4,to demonstrate the validity and applicability of the proposed model.