ZnおよびAlの対応粒界における粒界移動-粒界すべりとそのDSC転位モデル

抄録

The grain boundary sliding behavior was investigated in coincidence boundaries of Zn and Al bicrystal specimens, in order to demonstrate the applicability of the DSC dislocation model. Two coincidence boundaries, viz. a ⟨10\bar10⟩ symmetric tilt boundary with a {1\bar216} boundary plane in Zn and a ⟨1\bar10⟩ symmetric tilt boundary with a {113} boundary plane in Al, were examined. Coupling of sliding and migration was observed on both boundaries. The ratio of the amount of grain boundary migration to that of grain boundary sliding was measured to be about 8 for the Zn {1\bar216} boundary and about 3 for the Al {113} boundary. The ratios and the migration directions were in accordance with the theoretical prediction based on the DSC dislocation model.