Abstract
The Fe macrosegregation during casting and the limited sample size of the traditional powder metallurgy methods are challenges for the application of Cu-Fe composite. In this work, a powder rolling strategy is developed to fabricate fully dense Cu-10Fe billet by consolidating pure Cu and Fe powders. This method can solve the above problems. The microstructure evolution at different processing stages was characterized in detail by scanning electron microscope (SEM), electron probe microanalysis (EPMA) and transmission electron microscope (TEM). The Fe macrosegregation was avoided and good metallurgical bonding quality between powders was achieved after cold rolling. Ordered clusters were formed in the Fe phase, and three different types of Fe precipitates were found in the Cu matrix. The formation mechanisms of ordered structure and precipitates were analyzed. The variation of mechanical and electrical properties with aging process was discussed.
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