Short process preparation method of high-strength high-conductivity deformation-processed Cu-Cr-Ag in-situ composite material
An in-situ composite material, short process technology, applied in the field of preparation of non-ferrous metal materials, can solve the problems of unstable comprehensive performance of materials, large thermal and cold deformation strain, poor fiber continuity, etc., to achieve stable use of comprehensive performance, The effect of reducing the amount of cold deformation strain and improving the electrical conductivity
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Embodiment 1
[0016] (1) Weigh 6% of pure chromium, 0.008% of pure silver and the rest of pure copper according to the mass percentage, put them into an intermediate frequency induction furnace for melting and cast them into ingots with graphite molds;
[0017] (2) Put the ingot into Al with a purity of 99.99% and an inner layer coated with a high-temperature resistant inert coating 2 o 3 In the two-way ceramic tube, put the ceramic tube into the regional melting-directional solidification furnace, and melt it in a high-purity argon atmosphere of 300Pa through a high-frequency induction power supply. After melting, the alloy melt is drawn together with the ceramic tube on the base and Under the action of the mechanism, it moves downward at a speed of 50 μm / s and is simultaneously cooled by the gallium-indium alloy liquid to form a directional solidified ingot;
[0018] (3) The directionally solidified ingot is subjected to multi-pass cold drawing deformation at room temperature, and the to...
Embodiment 2
[0022] (1) Weigh 15% of pure chromium, 0.06% of pure silver and the rest of pure copper according to the mass percentage, put them into an intermediate frequency induction furnace for melting and cast them into ingots with graphite molds;
[0023] (2) Put the ingot into Al with a purity of 99.99% and an inner layer coated with a high-temperature resistant inert coating 2 o 3 In the two-way ceramic tube, the ceramic tube is put into the regional melting-directional solidification furnace, and smelted in a high-purity argon atmosphere of 350Pa through a high-frequency induction power supply. After melting, the alloy melt is drawn together with the ceramic tube on the base and Under the action of the mechanism, it moves downward at a speed of 100 μm / s and is simultaneously cooled by the gallium-indium alloy liquid to form a directional solidified ingot;
[0024] (3) The directionally solidified ingot is subjected to multi-pass cold drawing deformation at room temperature, and th...
Embodiment 3
[0028] (1) Weigh 20% of pure chromium, 0.12% of pure silver and the rest of pure copper according to the mass percentage, put them into an intermediate frequency induction furnace for melting and cast them into ingots with graphite molds;
[0029] (2) Put the ingot into Al with a purity of 99.99% and an inner layer coated with a high-temperature resistant inert coating 2 o 3 In the two-way ceramic tube, the ceramic tube is put into the regional melting-directional solidification furnace, and smelted in a high-purity argon atmosphere of 350Pa through a high-frequency induction power supply. After melting, the alloy melt is drawn together with the ceramic tube on the base and Under the action of the mechanism, it moves downward at a speed of 200 μm / s and is simultaneously cooled by the gallium-indium alloy liquid to form a directional solidified ingot;
[0030] (3) The directionally solidified ingot is subjected to multi-pass cold drawing deformation at room temperature, and th...
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