Artículos de revistas
Analysis of Ostwald ripening in Ni-rich Ni–Ti alloys by diffusion couples
Autor
C. G. Garay_Reyes
NICOLAS CAYETANO CASTRO
ROBERTO MARTINEZ SANCHEZ
HECTOR JAVIER DORANTES ROSALES
Institución
Resumen
"The coarsening kinetics of gamma' precipitates in Ni-rich Ni-Ti alloys are studied using a Ni-11-5 wt% Ti and pure Ni diffusion couple. The formed concentration gradient allowed to study the aging process at 1023 K (750 degrees C) in Ni-rich Ni Ti alloys with Ti content from 8-62 to 11-15 wt% Ti. In general, during the coarsening of gamma' precipitates, the experimental coarsening kinetics do not fit well to the LSW or TIDC theoretical models and anomalous behaviour of coarsening rate constant (k(r)) associated with gamma' volume-fraction is confirmed at high values."
Materias
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