High-damping magnesium alloy containing quasicrystal reinforcing phase and preparation method thereof

Abstract

The invention discloses a high-damping magnesium alloy containing quasicrystal reinforcing phase and a preparation method thereof. The high-damping magnesium alloy containing quasicrystal reinforcing phase comprises the following alloy components in percentage by weight: 0.9%-1.0% of zinc, 0.15-0.2% of yttrium and 0.6% of zirconium, wherein, zinc and magnesium are industrial pure zinc and industrial pure magnesium; alloy elements, namely, yttrium and zirconium respectively adopt the preliminary alloy form of magnesium-30% of yttrium and magnesium-30% of zirconium to be added in; the high-damping magnesium alloy containing quasicrystal reinforcing phase is prepared by preheating, smelting and shaping. The invention takes zinc, yttrium and zirconium as alloy elements, the atom content ratio of zinc to yttrium in the alloy is controlled to 5-6, so that the formed icosahedron quasicrystal phase has special crystal structure, which ensures the stability of interface combination. The high-damping magnesium alloy containing quasicrystal reinforcing phase of the invention can effectively prevent dislocation slippage and twin crystal expansion, performs favourable strengthening function, effectively overcomes the contradictoriness between the strength and the damping performance in the magnesium base high-damping structure material, has favourable anti-corrosion performance and is a magnesium alloy with comprehensive performance.

Description

1. Technical field: [0001] The invention relates to the field of materials, in particular to a high-damping magnesium alloy containing a quasi-crystal reinforcement phase and a preparation method thereof. 2. Background technology: [0002] Vibration and noise are one of the important public hazards that accompany the rapid development of modern industry. Over the years, various fields of modern industry have been adopting various means to control the harm caused by vibration and noise, and damping and vibration reduction technology has emerged as the times require. There are three main methods of damping, that is, system damping, structural damping and material damping. Material damping relies on the high damping characteristics of the material itself to achieve the purpose of vibration reduction. Using the material's own damping can reduce design costs and make the system lighter. Therefore, the development of new low-density, high-strength and high-damping structural ma...

AI Technical Summary

Problems solved by technology

[0003] Among many metals, pure magnesium has the best damping performance, but due to its poor strength and corrosion resistance, it cannot be used as a structural material

At present, there are only a few common binary high-damping alloys such as magnesium-zirconium and magnesium-nickel, but they still have disadvantages such as low strength and poor corrosion resistance during use.