Effect of Rare Earth Ce on Aging Properties of Cu-Sn-Ti-Cr Alloy
In this study,Cu-Sn-Ti-Cr and Cu-Sn-Ti-Cr-Ce alloys are prepared by vacuum melting,and their hardness,conductivity and strength are tested after aging treatment.The results show that Cu-Sn-Ti-Cr-Ce alloy exhibits the best mechanical properties after 50％cold rolling and aging treatment at 450 ℃ for 60 min.The hardness reaches 290HV and the conductivity is 20.1％IACS.By EBSD analysis,it is found that the Ce element can inhibit the grain growth and refine the grain size.Compared with Cu-Sn-Ti-Cr alloy,the addition of rare earth element Ce decreases the size and increases the amount of precipitated phase,which improves the properties of the alloy.
Cu-Sn-Ti-Cr alloymechanical propertiesmicrostructurerare earth Ce
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