High-strength magnesium alloy extruded profile and manufacturing method thereof

Abstract

The invention discloses a high-strength magnesium alloy extruded profile. The high-strength magnesium alloy extruded profile comprises the following chemical elements in percentage by mass besides Mg: 6.5-9.5% of Gd; 1.5-4.0% of Y; 0.02-1.0% of Zn; and 0.01-0.5% of Zr. Correspondingly, the invention also discloses a manufacturing method of the high-strength magnesium alloy extruded profile, the manufacturing method comprises the following steps that an extruded ingot is prepared; the temperature distribution of the extruded ingot in each direction is determined based on finite element simulation software; an induction heating system is adopted to heat the extruded ingot according to the temperature distribution; and the heated extruded ingot is immediately placed in a preheated extrusion cylinder and an extrusion die to be extruded. The high-strength magnesium alloy extruded profile has good structure property uniformity, is excellent in performance and high in product quality, and has good popularization prospects and application values.

Description

technical field [0001] The invention relates to an extruded profile and a manufacturing method thereof, in particular to a magnesium alloy extruded profile and a manufacturing method thereof. Background technique [0002] Because magnesium alloy material has many advantages such as low density, high specific strength, good damping and shock absorption, good machining performance, good electromagnetic shielding performance, easy recycling and recycling, it is also called "green engineering structural material in the 21st century" . Magnesium alloys have broad application prospects in aerospace, rail transit, automotive materials, and lightweight design in the 3C industry. my country's magnesite reserves rank first in the world, and magnesium resources are abundant. In order to give full play to my country's resource advantages, it is expected that Further lead the development of the industry through the field of magnesium alloys. [0003] In the process of preparing metal pr...

AI Technical Summary

Problems solved by technology

[0014] For simple shape profiles, although some of the above technologies achieve temperature gradients in the axial and radial directions, because of the realization of this temperature gradient, there is no goal of regulation, and the uniformity of the temperature and structural properties of the final profile is not enough. It will definitely bring benefits, especially the lack of targeted guidance on the impact of specific profile shapes and sizes on temperature requirements

Correspondingly, even if such a temperature gradient exists on the extruded ingot, after the extruded ingot enters the extruded cylinder of hot processing, due to the influence of the insulation temperature of the extruded cylinder itself, during the extrusion process, it often follows As the extrusion time slowly advances, the ingot is reheated, and the temperature field will change significantly

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