# Calculated Vacancy Concentration After Quenching

| Calculated changes in the concentration of single- double- and triple vacancies (cL, cD and cT) and the total concentration c = cL + 2cD0 + 3cT in Au during quenching from 800 oC with dT/dt = 3 · 104 K/s (after Furuka).
|  | The colored dashed lines assume a dislocation density of zero (i.e. no sinks, N = 0), whereas the solid lines assume a dislocation density of N = 5 · 107.
|  | Without sinks, the total concentration c of vacancies does not change is required (since no clusters with more that 3 vacancies are allowed). The concentration of single vacancies, however, changes considerably despite the large cooling rate.
|  | The presence of sinks does change the picture somewhat, but not dramatically as we would expect for large cooling rates - there simply is not enough time to migrate to a sink.
|  | For the migration energies (Ex,M) and the binding energies Ex;B the following values were used: EL, M= 0.83 eV, ED,M= 0.71 eV, ED;B= 0.35 eV, ET,B= 0.65 eV.
|  | See also chapter 10.2 in the "Physikalische Metallkunde" of P. Haasen

With frame

2.2.2 Local and Global Equilibrium

4.2.1 Point Defects in Non-Equilibrium

© H. Föll (Defects - Script)