Результаты исследований: Вклад в журнал › Статья › Рецензирование
Результаты исследований: Вклад в журнал › Статья › Рецензирование
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TY - JOUR
T1 - Diffusion processes at zonal stage of precipitation in supersaturated solid solutions
AU - Farber, V. M.
AU - Gushchina, N. V.
PY - 1996
Y1 - 1996
N2 - The initial stages of solid solution decomposition with formation of Guinier-Preston zones are theoretically analyzed. It is concluded that the volume diffusion at this stage is not sufficiently advanced because of inconsiderable concentration gradient. The motive force of precipitation is a force of interatomic interaction between the nearest neighboring atoms. The formation of interfaces with lower chemical potential in comparison with that of surrounding solid solution initiates the volume diffusion of atoms in the direction of initial precipitates. So, the extrapolation of diffusion coefficient values obtained from high temperature experiments to the stage of spinodal precipitation is shown to be not correct.
AB - The initial stages of solid solution decomposition with formation of Guinier-Preston zones are theoretically analyzed. It is concluded that the volume diffusion at this stage is not sufficiently advanced because of inconsiderable concentration gradient. The motive force of precipitation is a force of interatomic interaction between the nearest neighboring atoms. The formation of interfaces with lower chemical potential in comparison with that of surrounding solid solution initiates the volume diffusion of atoms in the direction of initial precipitates. So, the extrapolation of diffusion coefficient values obtained from high temperature experiments to the stage of spinodal precipitation is shown to be not correct.
UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=0030181029
M3 - Статья
VL - 82
SP - 123
EP - 127
JO - Fizika Metallov i Metallovedenie
JF - Fizika Metallov i Metallovedenie
SN - 0015-3230
IS - 1
ER -
ID: 53318698