A kind of high conductivity aluminum alloy and its heat treatment process

Abstract

The invention discloses a high-conductivity aluminum alloy. The high-conductivity aluminum alloy comprises the following components of, in percentage, 0.34%-0.45% of Si, smaller than or equal to 0.12%of Fe, 0.08%-0.18% of Cu, 0.54%-0.76% of Mg, smaller than or equal to 0.05% of Zn, smaller than or equal to 0.05% of Cr and the balance Al and other inevitable impurity elements, the total componentcontents of Mg and Si are smaller than or equal to 1.05%, the mass ratio of Mg to Si is 1.6 to 1.7, the total component contents of Cu and Zn are 0.12%-0.18%, and Cu / Zn is larger than or equal to 2.8and smaller than or equal to 3.4. According to the high-conductivity aluminum alloy and the heating processing technology thereof, on the basis of common elements, the proportion content of the elements is optimized, meanwhile, a heat treatment method is coordinated, it is guaranteed that the mechanical property is not greatly reduced while the conductivity is improved, the cost is reduced, and the application prospect is achieved.

Description

technical field [0001] The invention belongs to the field of aluminum alloy materials, and in particular relates to a high-conductivity aluminum alloy and a heat treatment process thereof. Background technique [0002] With the rapid development of my country's economy, the great development of the power system, and large-scale infrastructure construction, the demand for wires and cables in my country has grown rapidly. At present, most of the conductor materials of my country's wires and cables use copper conductors, but due to the shortage of copper resources in my country and the high price of copper, copper conductor materials account for more than 70% of the cost of copper wires and cables, resulting in too much cost for manufacturing copper wires and cables; if used Pure aluminum conductor material, after long-term use in our country, it is found that the pure aluminum conductor material will undergo large creep after long-term operation or current overload, resulting i...

AI Technical Summary

Problems solved by technology

At present, most of the conductor materials of my country's wires and cables use copper conductors, but due to the shortage of copper resources in my country and the high price of copper, copper conductor materials account for more than 70% of the cost of copper wires and cables, resulting in too much cost for manufacturing copper wires and cables; if used Pure aluminum conductor material, after a long period of use in our country, it is found that the pure aluminum conductor material will undergo large creep after long-term operation or current overload, resulting in increased contact resistance, easy to cause accidents, and poor bending performance, easy to crack or break , also prone to accidents

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