A multi-component microalloyed high-strength corrosion-resistant magnesium alloy rod and preparation method thereof
By adding La, Ca and Y elements to the magnesium alloy and using extrusion and rotary forging technology, the problem of insufficient corrosion resistance and mechanical properties of magnesium alloy in complex environments is solved, and high strength and good corrosion resistance are achieved.
CN119243001BActive Publication Date: 2025-03-28SHANGHAI JIAOTONG UNIV
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Patent Information
- Application Number
- CN202411793553.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2044-12-09
AI Technical Summary
Technical Problem
The application of existing magnesium alloys in aerospace and other fields is limited by their poor corrosion resistance and mechanical properties, especially in complex and harsh environments.
Method used
By adding low-potential La, Ca and Y elements to the Mg-Al alloy for microalloying, and using the deformation process of extrusion and rotary forging, a multivariate microalloyed high-strength corrosion-resistant magnesium alloy rod was prepared.
Benefits of technology
The mechanical properties and corrosion resistance of magnesium alloys are significantly improved, the intensification of microcouple corrosion is avoided, and the corrosion resistance is improved through the dense oxide film structure.
✦ Generated by Eureka AI based on patent content.
Abstract
The present application relates to the field of magnesium alloy technology, and specifically discloses a multi-component microalloyed high-strength and corrosion-resistant magnesium alloy bar and a preparation method thereof. A multi-component microalloyed high-strength and corrosion-resistant magnesium alloy bar, based on mass percentage, contains the following chemical composition: 6-7% Al, 0.1-0.15% La, 0.1-0.15% Ca, 0.1-0.15% Y, the remainder is Mg and unavoidable impurities, the magnesium alloy bar is a multiphase structure, wherein the magnesium matrix is a close-packed hexagonal crystal structure, obtained by extrusion and bar swaging deformation process. The multi-component microalloyed high-strength and corrosion-resistant magnesium alloy bar prepared in the present application has the advantages of high strength and corrosion resistance.
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