A method for preparing a high-strength and high-toughness magnesium alloy wheel without heat treatment

Magnesium alloy wheels are prepared through a combination of multi-directional forging and rotary forging, which solves the casting defects and uneven mechanical properties of magnesium alloy wheels in the casting process, and achieves high strength and high toughness performance and the effect of reducing production costs.

CN118650097BActive Publication Date: 2025-03-21CHINA WEAPON SCI ACADEMY NINGBO BRANCH
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Patent Information

Application Number
CN202411127996.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-08-16
Publication Date
2025-03-21
Estimated Expiration
2044-08-16

AI Technical Summary

Technical Problem

During the casting process, magnesium alloy wheels are prone to casting defects and uneven mechanical properties, and require heat treatment to improve performance. However, magnesium alloys are sensitive to temperature changes and are difficult to heat treatment, which can easily lead to deformation or cracks.

Method used

Magnesium alloy wheels are prepared by a combination of multi-directional forging and rotary forging. Through specific chemical composition ratios and forging parameters, a uniform isometric crystal structure is formed, avoiding the need for heat treatment.

Benefits of technology

It realizes the high strength and toughness performance of magnesium alloy wheels, while eliminating the anisotropy of mechanical properties, reducing production costs, and improving product quality and service life.

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Abstract

The present application relates to the technical field of magnesium alloy wheel preparation, and in particular to a method for preparing a high-strength and high-toughness magnesium alloy wheel that does not require heat treatment, which comprises the following steps: blanking, heating, multi-directional forging, primary forging, heating, rotary forging, and forming. A blank with a specific chemical composition ratio is used, and the anisotropy of the magnesium alloy blank is eliminated to the maximum extent by multi-directional forging. The magnesium alloy round cake-shaped blank that has undergone primary forging is subjected to rotary forging for near-net forming. The formed magnesium alloy wheel can be used without processing or with very little processing, and finally a magnesium alloy wheel with high strength and high toughness mechanical properties that does not require heat treatment is obtained.
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