Effect of Cooling Methods on As-cast Microstructure and Properties of Cu-Fe Alloys
Cu-10Fe alloy was prepared adopting different casting cooling methods,such as graphite mold and water-cooled copper mold to study the effect of cooling methods on the microstructure and properties of Cu-10Fe alloy.The results show that the cooling methods have a significant effect on the tensile strength and electrical conductivity of Cu-10Fe alloy.When a graphite mold is used,the solid solubility of Fe elements in copper matrix decreases,promoting the precipitation of the Fe phase,which is beneficial for improving the electrical conductivity of alloy.When a water-cooled copper mold is used,the microstructure of the alloy is obviously refined,and the solid solubility of Fe in copper matrix increases.The tensile strength and microhardness of the Cu-10Fe alloy are en-hanced significantly,while the electrical conductivity decreases slightly.The tensile strength,micro-hardness and electrical conductivity of the Cu-10Fe alloy are 299.1 MPa,103.6 HV and 49.58% IACS,respectively,demonstrating satisfactory overall performance.
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