5083 aluminum alloy plate for high-speed rail and production method thereof

Abstract

The invention discloses a 5083 aluminum alloy plate for a high-speed rail and a production method thereof. The 5083 aluminum alloy plate for the high-speed rail is prepared from the following raw materials in percentage by weight: 0.20-0.30% of Si, 0.20-0.30% of Fe, 0.03-0.07% of Cu, 0.45-0.60% of Mn, 5.0-5.3% of Mg, 0.10-0.20% of Cr, 0.015-0.03% of Ti, 0-0.10% of Zn, and the balance of Al. The production method comprises the steps of preparing the raw materials, smelting, casting, sawing off the head, milling the surface, soaking, hot rough rolling, hot finishing, cold rolling, bending and straightening, annealing and slicing up. The method disclosed by the invention can be utilized to improve the fatigue strength, the tensile strength, the ductility and other properties of the 5083 aluminum alloy plate, so that the operating requirements on the 5083 aluminum alloy plate for the high-speed rail can be completely met.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy material processing, and in particular relates to an aluminum alloy plate for high-speed rail and a production method thereof. Background technique [0002] In recent years, with the continuous development of my country's high-speed rail technology, high-speed rail trains are also "going abroad" while being popularized in China. Due to the low density of aluminum alloy and high strength, aluminum alloy is the best material for high-speed rail to achieve light weight. Using aluminum alloy can greatly reduce the weight of high-speed rail trains. Among them, the 5083 aluminum alloy sheet is an important component of the family of aluminum alloy materials for high-speed rail. Although the high-speed rail market has broad prospects, there are only a handful of manufacturers in China that can actually produce 5083 plates that meet the performance requirements of high-speed rail. The 5083 alumin...

AI Technical Summary

Problems solved by technology

The 5083 aluminum alloy is a deformed aluminum alloy, which cannot be strengthened by heat treatment. It cannot be strengthened by heat treatment, and often has problems such as low fatigue strength, uneven tensile strength, and low elongation.

The 5083 aluminum sheet for high-speed rail produced by the existing production process cannot fully meet the performance requirements of the sheet for high-speed rail