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A reinforcement phase and magnesium alloy technology, applied in the field of materials, can solve the problems of low strength, inability to use structural materials, poor corrosion resistance, etc.
Inactive Publication Date: 2009-12-16
NORTHWESTERN POLYTECHNICAL UNIV
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[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 ar
Method used
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[0014] Example one
[0015] In this embodiment, a magnesium-zinc-yttrium-zirconium quaternary magnesium alloy containing 0.90% of zinc by weight, 0.15% by weight of yttrium, and 0.6% by weight of zirconium is used as alloying elements to prepare a high-damping magnesium alloy. Zinc is added by industrial pure zinc, and the alloy elements yttrium and zirconium are added by intermediate alloy. The composition of the intermediate alloy is magnesium-30% yttrium and magnesium-30% zirconium.
[0016] When preparing:
[0017] In the first step, preheat the crucible to 250°C and apply paint;
[0018] In the second step, the crucible is heated to 300°C, pure magnesium is added to the crucible, and protective gas is introduced;
[0019] In the third step, when the magnesium is completely melted, add magnesium-yttrium, magnesium-zirconium master alloy and pure zinc at 700℃;
[0020] In the fourth step, continue to heat up to 720°C, keep warm and stir to fully melt the intermediate alloy and ...
Example Embodiment
[0024] Example two
[0025] In this embodiment, a magnesium-zinc-yttrium-zirconium quaternary magnesium alloy containing 1.0% by weight of zinc, 0.2% by weight of yttrium, and 0.6% by weight of zirconium is used as the alloying element to prepare a high-strength, high-damping, and corrosion-resistant New type of magnesium alloy. Zinc is added by industrial pure zinc, and the alloy elements yttrium and zirconium are added by intermediate alloy. The composition of the intermediate alloy is magnesium-30% yttrium and magnesium-30% zirconium.
[0026] When preparing:
[0027] In the first step, preheat the crucible to 250°C and apply paint;
[0028] In the second step, the crucible is heated to 300°C, pure magnesium is added to the crucible, and protective gas is introduced;
[0029] In the third step, when the magnesium is completely melted, add magnesium-yttrium, magnesium-zirconium master alloy and pure zinc at 710°C;
[0030] In the fourth step, continue to heat up to 720°C, keep w...
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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...
Claims
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