Fatigue damage healing model based on dislocation reverse-back under
unconstraint vibration condition for copper film
- Haimeng Zhang,
- De-Guang Shang,
- Xiao-Dong Liu,
- Yu Zhang
Abstract
In this investigation, it is found that the generated elastic stress
during the unconstraint vibration treatment process can act as the
dislocation driving stress on the dislocation in the micro-scale. When
the sum of the dislocation driving stress, the image stress and the back
stress exceeds the motion resistance of the dislocations in a pile-up,
the dislocations begin to reverse back, and the pile-up disappear. Based
on this principle, a fatigue damage-healing model under unconstraint
vibration condition was proposed. The verified results showed that the
damaged copper film can be effectively healed by the vibration guided by
the model calculation.