Cu-Cr alloy containing trace Pb elements and solidification preparation method thereof
A cu-cr, alloy technology, applied in the field of Cu-Cr alloy preparation, can solve the problems of phase segregation, two-phase delamination, preparation difficulties, etc.
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Embodiment 1
[0021] Such as figure 2 As shown, a Cu-15wt%Cr alloy is cast using a copper mold, the inner diameter of the copper mold is 5mm, and the temperature of the copper mold is room temperature before casting. The Cr-rich phase exists in the form of coarse dendrites in the sample without adding Pb, and the Cr-rich phase exists in the form of dispersed particles in the alloy sample added with 0.1wt% Pb, and the distribution is uniform.
[0022] Its preparation process is as follows:
[0023] The Cu-15wt%Cr alloy and the Cu-15wt%Cr-0.1wt%Pb alloy were smelted in an electric arc furnace, the temperature was raised to 1600°C and kept for 2 minutes, and then the melt was poured into a copper mold.
Embodiment 2
[0025] Such as image 3 As shown, a Cu-20wt%Cr alloy is casted with a copper mold, the inner diameter of the copper mold is 5mm, and the temperature of the copper mold is room temperature before casting. The Cr-rich phase exists in the form of coarse dendrites in the sample without adding Pb, and the Cr-rich phase exists in the form of dispersed particles in the alloy sample with 0.07wt% Pb added, and the distribution is uniform.
[0026] Its preparation process is as follows:
[0027] The Cu-20wt%Cr alloy and the Cu-20wt%Cr-0.07wt%Pb alloy were smelted in an electric arc furnace, the temperature was raised to 1600°C and kept for 2 minutes, and then the melt was poured into the copper mold.
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