Study on the Microstructure and Properties of Cu-15Fe-Ce Rolled Deformation Alloy
Cu-15Fe-Ce alloy was prepared by vacuum induction melting,and the alloy strip was prepared by cold rolling and aging in this paper.The effects of different Ce contents on the microstructure,mechanical and electrical properties of Cu-15Fe alloy were studied by electron microscope observation,energy spectrum analysis,tensile tests and conductivity tests.The results show that the addition of trace amounts of rare earth cerium is beneficial for refining the Fe-rich phase of Cu-15Fe alloy,reduce the distance between iron fibers after rolling,stimulate different strengthening mechanisms,improve the mechanical and electrical properties as well as high-temperature softening resistance of the alloy.However,an excessive amount of Ce forms a network of intermetallic compounds at the grain boundaries,which reduces the overall properties of the alloy.When the Ce content is 0.005％,the conductivity of Cu-15Fe-Ce alloy strip achieves the best comprehensive properties after aging treatment at 500 ℃ for 60 minutes.
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