Rare-earth aluminum-magnesium alloy material and preparation method thereof

Abstract

The invention relates to a rare-earth aluminum-magnesium alloy material which comprises the following chemical components in percentage by weight: 0.08-0.35% of rare-earth element RE, 0.2-1.8% of Mg, at most 0.05% of other single impurities (at most 0.15% of total impurities), and the balance of aluminum. The rare-earth element is selected from one or a mixture of lanthanum, cerium, yttrium, praseodymium, neodymium and erbium. Compared with the common aluminum, the rare-earth aluminum-magnesium alloy material has the advantages of high strength, favorable elongation percentage, favorable sagging property and favorable wear resistance. By adding the rare earth and adding the technique which breaks through the traditional processing technique for aluminum-magnesium alloy line poles (extrusion after drawing or casting), a five-roller continuous-casting tandem mill can be adopted to perform infinite continuous production, thereby greatly enhancing the production efficiency. By adopting the high-temperature quick rolling, the alloy can be easily formed, thereby enhancing the mechanical productivity and prolonging the service life of the equipment wearing parts. Thus, the internal structure of the alloy is more compact and complete.

Description

technical field [0001] The invention relates to a rare earth aluminum-magnesium alloy material and a preparation method thereof. The material can not only be prepared to meet the requirements of medium-strength aluminum alloy rods and wires in the overhead or civil construction industry, but also can be widely used in the fields of communication signal lines and shielding lines. Wait. Background technique [0002] Energy, safety, and environmental protection are three key issues related to human survival and development. Aluminum has low density, high specific strength and specific stiffness, corrosion resistance, beautiful and durable, easy to form, can be surface treated, can be recycled, and can save energy. With a series of excellent properties such as energy storage, the promotion and application of aluminum materials is an important way to alleviate the above three problems. Therefore, aluminum is more and more favored by people, and its application has spread to all ...

AI Technical Summary

Problems solved by technology

[0003] The existing production of medium-strength aluminum alloy materials is mainly through extrusion molding or multiple annealing and drawing molding after traction. The production line is 8 tons per day, continuous casting and rolling is 4 tons per hour, and multiple annealing is required, resulting in extremely high costs; extrusion molding: ingot heating, extrusion of intermediate wool, cutting of intermediate wool, heating, secondary extrusion, Wire production, coiling, intermediate annealing, multiple wire drawing, cleaning or polishing, closing, inspection, packaging, and delivery; resulting in low material utilization, many scraps, high production costs, and complex and cumbersome production processes