Segregation of copper in an Fe–Cu alloy under pulsed electric current

Zhang, X. F. and Qin, R. S. (2015). Segregation of copper in an Fe–Cu alloy under pulsed electric current. Philosophical Magazine Letters, 95(7) pp. 367–375.

DOI: https://doi.org/10.1080/09500839.2015.1069415

Abstract

Effect of electric current on the segregation of copper precipitates in the Fe–13.6Cu alloy is evaluated. Results of this approach present two stages of segregation, namely, grain-boundary segregation during the solidification and interphase-boundary segregation during the decomposition of a solid solution. The segregation becomes apparent not only because the thermodynamic barrier for segregation is decreased, but also because the diffusion is greatly enhanced. Based on the thermodynamic and kinetic aspects, the segregation process under electric current would be of great interest and of physical importance because this kind of electric current-induced segregation was much stronger than the thermal diffusion segregation.

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