Abstract
Microscopic stress distribution in cladded weld metal of Ni-base alloy was calculated. Simulation model of a columnar grain aggregate was generated based on a crystal orientation measurement result by electron backscatter diffraction method. Microscopic stress much higher than applied macroscopic stress was observed when load was applied along transverse direction of columnar grain growth direction. On the other hand, homogeneous microscopic stress was obtained in a columnar grain model when macroscopic stress was applied in columnar grain growth direction. The difference caused from anisotropic crystalline orientation distribution of weld metal, and is important in the evaluation of microscopic stress distribution in weld metal.
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