Dynamics of phase transformation of Cu-Ni-Si alloy with super-high strength and high conductivity during aging

The precipitation behaviors of the Cu-Ni-Si alloys during aging were studied by analyzing the variations of electric conductivity.The Avrami-equation of phase transformation kinetics and the Avrami-equation of electric conductivity during aging were established for Cu-Ni-Si alloys,on the basis of li...

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Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2010-06, Vol.20 (6), p.1006-1011
Main Author: 雷前 李周 潘志勇 汪明朴 肖柱 陈畅
Format: Article
Language:English
Subjects:
AGING MECHANISMS
Avrami方程
COPPER ALLOYS (40 TO 99.3 CU)
Copper base alloys
Cu-Ni-Si alloy
dynamics
ELECTRICAL CONDUCTIVITY
MATHEMATICAL ANALYSIS
Ni3Si
phase transformation
PHASE TRANSFORMATIONS
PHASES
PRECIPITATES
PRECIPITATION
SOLID SOLUTIONS
Transformations
动力学曲线
相变动力学
老化过程
超高强度
铜镍硅合金
高导电
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Summary:The precipitation behaviors of the Cu-Ni-Si alloys during aging were studied by analyzing the variations of electric conductivity.The Avrami-equation of phase transformation kinetics and the Avrami-equation of electric conductivity during aging were established for Cu-Ni-Si alloys,on the basis of linear relationship between the electric conductivity and the volume fraction of precipitates,and the calculation results coincide well with the experiment ones.The transformation kinetics curves were established to characterize the aging process.The characteristics of precipitates in the supersaturated solid solution alloy aged at 723 K were established,and the results show that the precipitates areβ-Ni3Si andδ-Ni2Si phases.
ISSN:1003-6326
DOI:10.1016/S1003-6326(09)60249-1