74 巻 (2010) 4 号 p. 258-263
EBSD is a powerful tool to analyze strains in metallic materials, and various ways are established, such as KAM (Kernel Average Misorientation), GOS (Grain Orientation Spread), GROD (Grain Reference Orientation Spread), to estimate the strains. However, they are not focused on the grain boundary that plays an important role in polycrystalline when the materials are deformed. In this study, we focus on the distribution of misorientation near the grain boundary (DMGB) to estimate the influence of deformation to the grain boundary. The type 316NG deformed by various kinds of loading modes are prepared and the DMGBs in them are higher than one in the material as received. Besides, the DMGB in material deformed by constant strain mode which is simulated a welding process are the highest. It means DMGB has the possibility to estimate the effect of temperatures on deformations.