Cu-Hf-Si-Ni-Ce copper alloy material and preparation method thereof
A cu-hf-si-ni-ce, copper alloy technology, applied in the field of Cu-Hf-Si-Ni-Ce copper alloy material and its preparation, can solve the problem of decreased alloy strength, easy coarsening, alloy conductivity and Intensity reduction and other problems can be achieved to reduce hot-rolled cracking, improve mechanical properties, and improve electrical conductivity.
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Embodiment 1
[0031]The mass percentage of the alloy composition is: 0.80wt% Hf, 0.09wt% Si, 0.09wt% Ni, 0.06wt% Ce, the rest is Cu, and the molar ratio of Hf:Si is 1.40:1.
[0032] Its preparation method is:
[0033] (1) Alloy melting and casting: put the raw materials into the crucible of the induction furnace, and evacuate to 10 -3 Pa, then pass through 1.1×10 5 Pa pure argon (Ar ≥ 99.99%) is smelted under the protection of pure argon. After the solid is completely melted to form an alloy melt, keep it for 10 minutes, insert the electrode of the pulse electric field under the melt surface, and the pulse time 150s, pulse frequency 8Hz, pulse current density 7A / mm 2 , the pulse width is 100μs, and then the alloy melt is cast into a graphite mold, and after cooling, the mold is opened to take out the alloy ingot. , Cu-Ce master alloy containing 25wt%Ce;
[0034] (2) Homogenization treatment: Under the protection of pure argon, put the obtained alloy ingot into a heat treatment furnace f...
Embodiment 2
[0044] The mass percentage of the alloy composition is: 0.90wt% Hf, 0.10wt% Si, 0.095wt% Ni, 0.08wt% Ce, the rest is Cu, and the molar ratio of Hf:Si is 1.42:1.
[0045] Its preparation method is:
[0046] (1) Alloy melting and casting: put the raw materials into the crucible of the induction furnace, and evacuate to 10 -3 Pa, then pass through 1.1×10 5 Pa pure argon (Ar ≥ 99.99%) is smelted under the protection of pure argon. After the solid is completely melted to form an alloy melt, keep it for 10 minutes, insert the electrode of the pulse electric field under the melt surface, and the pulse time 90s, pulse frequency 9Hz, pulse current density 10A / mm 2 , the pulse width is 70μs, and then the alloy melt is cast into a graphite mold. After cooling, the mold is opened to take out the alloy ingot. The thickness of the ingot is 25mm; the smelting uses Cu, Hf, Si, Ni metal blocks with a purity ≥ 99.9wt%. , Cu-Ce master alloy containing 25wt%Ce;
[0047] (2) Homogenization tre...
Embodiment 3
[0055] The mass percentage of the alloy composition is: 0.75wt% Hf, 0.06wt% Si, 0.08wt% Ni, 0.05wt% Ce, the rest is Cu, and the molar ratio of Hf:Si is 1.97:1.
[0056] Its preparation method is:
[0057] (1) Alloy melting and casting: put the raw materials into the crucible of the induction furnace, and evacuate to 10 -3 Pa, then pass through 1.1×10 5 Pa pure argon (Ar ≥ 99.99%) is smelted under the protection of pure argon. After the solid is completely melted to form an alloy melt, keep it for 10 minutes, insert the electrode of the pulse electric field under the melt surface, and the pulse time 30s, pulse frequency 5Hz, pulse current density 5A / mm 2 , the pulse width is 50μs, and then the alloy melt is cast into a graphite mold, and after cooling, the mold is opened to take out the alloy ingot. , Cu-Ce master alloy containing 25wt%Ce;
[0058] (2) Homogenization treatment: Under the protection of pure argon, put the obtained alloy ingot into a heat treatment furnace fo...
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