侵入型拡散過程における格子ひずみの発生と解放

抄録

The change in stress distribution during interstitial diffusion has been examined in carburized nickel single crystal sheets. It was found that the stress was left in crystals for a fairly long time after the concentration gradient disappeared. The result indicates that the distribution of dislocations in the diffusion zone does not correspond to the stress field due to the concentration gradient. This phenomenon is related to the fact that the motion of dislocations cannot follow the change in stress field due to the interstitial diffusion. The experimental result can be explained satisfactorily by the idea that the climb mechanism controlled the overall rate of dislocations in the diffusion zone.