Analysis of Ostwald ripening in Ni-rich Ni-Ti alloys by diffusion couples

被引：0

作者：

C. G. Garay-Reyes

F. Hernández-Santiago

N. Cayetano-Castro

R. Martínez-Sánchez

J. L. Hernández-Rivera

H. J. Dorantes-Rosales

J. J. Cruz-Rivera

机构：

[1] Universidad Autónoma de San Luis Potosí,Instituto de Metalurgia

[2] ESIME-AZC,Instituto Politécnico Nacional

[3] Instituto Potosino de Investigación Científica y Tecnológica,División de Materiales Avanzados

[4] Laboratorio Nacional de Nanotecnología,Centro de Investigación de Materiales Avanzados (CIMAV)

[5] ESIQIE-DIM,Instituto Politécnico Nacional

来源：

Bulletin of Materials Science | 2014年 / 37卷

关键词：

Diffusion couple; nickel-based alloys; ′ precipitates coarsening; TIDC theory; LSW theory; anomalous coarsening;

D O I：

暂无

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学科分类号：

摘要：

The coarsening kinetics of γ′ 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 °C) in Ni-rich Ni-Ti alloys with Ti content from 8.62 to 11.15 wt% Ti. In general, during the coarsening of γ′ precipitates, the experimental coarsening kinetics do not fit well to the LSW or TIDC theoretical models and anomalous behaviour of coarsening rate constant (kr) associated with γ′ volume-fraction is confirmed at high values.

引用

页码：823 / 829

页数：6