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A reinforcement phase and magnesium alloy technology, applied in the field of materials, can solve the problems of low strength, poor corrosion resistance, poor strength and corrosion resistance, etc.
Inactive Publication Date: 2012-05-30
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 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.
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Embodiment 1
[0015] In this embodiment, a magnesium-zinc-yttrium-zirconium quaternary magnesium alloy containing 0.90% by weight of zinc, 0.15% by weight of yttrium and 0.6% by weight of zirconium is used as an alloy element to prepare a high damping magnesium alloy. Zinc is added by industrial pure zinc, alloy elements yttrium and zirconium are added by master alloy, and the composition of master alloy is magnesium-30% yttrium and magnesium-30% zirconium.
[0016] When preparing:
[0017] The first step is to preheat the crucible to 250°C and paint;
[0018] In the second step, the crucible is heated to 300°C, pure magnesium is added to the crucible and the protective gas is started;
[0019] In the third step, when magnesium is completely melted, add magnesium-yttrium, magnesium-zirconium master alloy and pure zinc at 700°C;
[0020] The fourth step is to continue to heat up to 720 ° C, keep warm and stir to fully melt the master alloy and zinc;
[0021] The fifth step is to carry out...
Embodiment 2
[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 an alloy element to prepare a high-strength, high-damping, corrosion-resistant New magnesium alloy. Zinc is added by industrial pure zinc, alloy elements yttrium and zirconium are added by master alloy, and the composition of master alloy is magnesium-30% yttrium and magnesium-30% zirconium.
[0026] When preparing:
[0027] The first step is to preheat the crucible to 250°C and paint;
[0028] In the second step, the crucible is heated to 300°C, pure magnesium is added to the crucible and the protective gas is started;
[0029] In the third step, when magnesium is completely melted, add magnesium-yttrium, magnesium-zirconium master alloy and pure zinc at 710°C;
[0030] The fourth step is to continue to heat up to 720 ° C, keep warm and stir to fully melt the master alloy and zinc; ...
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Abstract
The invention discloses a high-damping magnesium alloy containing quasicrystal reinforcing phase and a preparation method thereof. The alloy is a magnesium zinc yttrium zirconium quaternary magnesium alloy which comprises 0.90 wt% of zinc, 0.15 wt% of yttrium and 0.6 wt% of zirconium. The added zinc adopts the technical pure zinc. The added alloy elements yttrium and zirconium adopt an intermediate alloy which comprises 30% of magnesium, 30% of yttrium and magnesium and zirconium. The high-damping magnesium alloy containing the quasicrystal reinforcing phase is prepared by preheating, smelting and moulding. The invention takes the zinc, yttrium and zirconium as alloy elements, forms icosahedral quasicrystal which has special crystal structure by controlling the atom content of zinc and yttrium in the alloy, so that the interface combination is stable, thus the slippage of dislocation and the expansion of the twin crystal are prevented. The high-damping magnesium alloy of the invention plays good 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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