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Evaluation of annealing treatment in a deformed Cu-12.8%Fecomposite

Published online by Cambridge University Press:  01 August 2013

Engang Wang ,
Lei Qu ,
Xiaowei Zuo ,
Lin Zhang  and
Jicheng He
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Abstract

In this paper, the effect of an annealing treatment on the microstructure, mechanicalproperties and electrical conductivity of a deformed Cu-12.8 wt%Fe composite prepared bythe “casting/cold working” process is investigated. The Fe filaments exhibit the shapecharacteristic in the as-drawn composite as the annealing temperature is lower than 500°C. When the annealing temperature is above 500 °C, the Fe filaments undergo theinstability process in terms of boundary splitting, coarsening and breakup gradually. Thetensile strength gradually decreases with increasing annealing temperature due to thecoarsening of filament spacing. The work hardening for the composite annealed above 600 °Cis slower than that annealed at a lower temperature. The electrical conductivity reaches amaximum of 60%IACS at a temperature of 450 °C for one hour of annealing, and it furtherincreases with increasing annealing time at 450 °C to reach a plateau of 68% IACS. Thecurve between the tensile strength and electrical conductivity under different annealingprocesses indicates that the optimum annealing temperature for the Cu-Fe composite is 450°C.

Keywords

Cu-Fe compositeannealing treatmentmechanical propertieselectrical conductivity
Type
Research Article
Information
Metallurgical Research & Technology , Volume 110 , Issue 4 , 2013 , pp. 289 - 296
Copyright
© EDP Sciences 2013

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