Al-Li-Ba aluminum lithium alloy with higher conductivity than pure aluminium and with high thermal conductivity

An aluminum-lithium alloy, electrical conductivity technology, applied in the field of alloys, can solve problems such as inability to meet requirements, and achieve the effects of improving lithium yield, excellent flame retardant performance, good plasticity and viscosity

Inactive Publication Date: 2018-03-06
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as a structural material, it is far from meeting the requirements to only have flame retardancy during smelting and prevent lithium volatilization during smelting. More importantly, the final aluminum-lithium alloy product must also have satisfactory mechanical properties. performance and conductivity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018]A high thermal conductivity Al-Li-Ba aluminum-lithium alloy with a conductivity higher than that of pure aluminum when smelted at 750 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 3.2wt.%, Ba: 0.5wt.%, Cu: 1.9wt.%, Ag: 0.8wt.%, Sr: 1.2wt.%, Pt: 0.2wt .%, Zr: 0.3wt.%, Nb: 0.2wt.%, Gd: 0.1wt.%, B: 0.9wt.%, the balance is aluminum. The preparation method of the alloy: add the above-mentioned raw materials into the induction furnace under the atmospheric environment, and use a silicon carbide crucible. Induction heating to 750 degrees to form an alloy solution, and use the electromagnetic effect to fully stir for about 10 minutes. The alloy liquid is kept at 750°C for 10 minutes and cast into the equipment at the same level as the hot top for semi-continuous casting, and the ingot moving speed is 8m / min. The ingots were deformed at room temperature with a rolling reduction of 8% in each pass. Every 3 passes of rolling requires an in...

Embodiment 2

[0020] A high thermal conductivity Al-Li-Ba aluminum-lithium alloy with a conductivity higher than that of pure aluminum when smelted at 780 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 2.4wt.%, Ba: 0.5wt.%, Cu: 1.9wt.%, Ag: 1.2wt.%, Sr: 1.3wt.%, Pt: 0.2wt .%, Zr: 0.3wt.%, Nb: 0.2wt.%, Gd: 0.1wt.%, B: 0.8wt.%, the balance is aluminum. The preparation method of the alloy: add the above-mentioned raw materials into the induction furnace under the atmospheric environment, and use a silicon carbide crucible. Induction heating to 780 degrees to form an alloy solution, and use the electromagnetic effect to fully stir for about 10 minutes. The alloy liquid is kept at 780 degrees for 10 minutes and cast into the equipment at the same level as the hot top for semi-continuous casting, and the ingot moving speed is 9m / min. The ingots were deformed at room temperature with a rolling reduction of 8% in each pass. Every 3 passes of rolling require...

Embodiment 3

[0022] A high thermal conductivity Al-Li-Ba aluminum-lithium alloy with a conductivity higher than that of pure aluminum when smelted at 790 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 3.4wt.%, Ba: 0.5wt.%, Cu: 1.9wt.%, Ag: 0.6wt.%, Sr: 1.2wt.%, Pt: 0.2wt .%, Zr: 0.3wt.%, Nb: 0.2wt.%, Gd: 0.1wt.%, B: 0.8wt.%, the balance is aluminum. The preparation method of the alloy: add the above-mentioned raw materials into the induction furnace under the atmospheric environment, and use a silicon carbide crucible. Induction heating to 790 degrees to form an alloy solution, and use the electromagnetic effect to fully stir for about 10 minutes. The alloy liquid is kept at 790 degrees for 10 minutes and cast into the equipment at the same level as the hot top for semi-continuous casting, and the ingot moving speed is 9m / min. The ingots were deformed at room temperature with a rolling reduction of 8% in each pass. Every 3 passes of rolling require...

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Abstract

The invention discloses an Al-Li-Ba aluminum-lithium alloy with higher electrical conductivity than pure aluminum and high thermal conductivity. In terms of weight percentage, the chemical composition of the alloy is: Li:2.0‑4.0wt.%, Ba:0.2‑0.6wt.%, Cu:1.5‑2.5wt.%, Ag:0.5‑1.5wt.%, Sr:1.0‑ 1.5wt.%, Pt: 0.2‑0.3wt.%, Zr: 0.2‑0.5wt.%, Nb: 0.1‑0.4wt.%, Gd: 0.1‑0.2wt.%, B: 0.5‑1.0wt.%, The balance is aluminum. Compared with traditional aluminum alloys for cables, this material has excellent mechanical properties, high electrical conductivity and high thermal conductivity.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to an aluminum-lithium alloy. Background technique [0002] Copper has good electrical and thermal conductivity, which can reduce the loss of electrical energy when transmitting current. At present, more than 60% of my country's wire and cable industry is made of copper, and the annual copper consumption for the production of cables accounts for more than 60% of the total domestic copper consumption. China is a country that lacks copper resources, and relies heavily on imports for copper. The contradiction between supply and demand in the copper market is prominent, causing prices to soar. In addition, copper cables also have disadvantages such as difficult construction and installation, high installation costs, easy theft, and easy aging. Many wire and cable companies strive to develop aluminum materials with excellent performance to meet the special needs of wire and cable produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/02C22F1/04C22F1/02
CPCC22C21/00C22C1/026C22F1/02C22F1/04
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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