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

被引：6

作者：

Garay-Reyes, C. G. ^{[1
]}

Hernandez-Santiago, F. ^{[2
]}

Cayetano-Castro, N. ^{[3
]}

Martinez-Sanchez, R. ^{[4
]}

Hernandez-Rivera, J. L. ^{[4
]}

Dorantes-Rosalese, H. J. ^{[5
]}

Cruz-Rivera, J. J. ^{[1
]}

机构：

[1] Univ Autonoma San Luis Potosi, Inst Met, Slp 78210, Mexico

[2] Inst Politecn Nacl, ESIME AZC, Col Sta Catarina 02550, DF, Mexico

[3] Inst Potosino Invest Cient & Tecnol, Div Mat Avanzados, Slp 78216, Mexico

[4] Ctr Invest Mat Avanzados CIMAV, Lab Nacl Nanotecnol, Chihuahua 311109, Mexico

[5] Inst Politecn Nacl, ESIQIE DIM, Mexico City 118556, DF, Mexico

来源：

BULLETIN OF MATERIALS SCIENCE | 2014年 / 37卷 / 04期

关键词：

Diffusion couple; nickel-based alloys; gamma ' precipitates coarsening; TIDC theory; LSW theory; anomalous coarsening; VOLUME-FRACTION DEPENDENCE; AL ALLOYS; SPINODAL DECOMPOSITION; COARSENING BEHAVIOR; NEUTRON-SCATTERING; METASTABLE STATES; KINETICS; MICROSTRUCTURE; PRECIPITATION; MICROSCOPY;

D O I：

10.1007/s12034-014-0012-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：823 / 829

页数：7

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