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Composite inoculant for refining high-damping zinc-aluminum alloy structure

A composite inoculant, zinc-aluminum alloy technology, applied in the field of high-damping zinc-aluminum alloy structure refinement/Al composite inoculant, can solve the limited improvement of the mechanical properties of the ZA22 alloy, insufficient grain refinement, and energy consumption. Can big and other issues

Active Publication Date: 2022-02-18
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN102978425A and CN102268573A disclose two refiners that can be used for zinc-aluminum alloys, which can refine the grains of the alloy to about 50 μm, but the degree of grain refinement is still not enough
Although the technology disclosed in CN106756156A can refine the crystal grains of zinc-aluminum eutectoid alloy (ZA22) to 10-12 μm, this technology needs to carry out vacuum stripping rapid solidification treatment and compound addition of Zr element to the inoculant to realize, not only the process The operation is relatively complicated, and the cost is high and the energy consumption is large. In addition, the improvement of the mechanical properties of the refined ZA22 alloy using this technology is also relatively limited.

Method used

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  • Composite inoculant for refining high-damping zinc-aluminum alloy structure
  • Composite inoculant for refining high-damping zinc-aluminum alloy structure
  • Composite inoculant for refining high-damping zinc-aluminum alloy structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Pure Al, pure Ni metal is cut into 6 × 6 × 6mm 3 After the square, it was polished with water sandpaper, then pure Al, pure Ni metal block and sponge Ti were placed in anhydrous ethanol to clean 8 min, then put it in a vacuum drying box, after 15min at 60 ° C for 15 minutes, press NI. The mass content of 18 wt.%, Ti has a mass content of 4 wt.%, The rest is Al, weighs a total mass of 10 g and put it into the copper crucible of the micro-arc furnace, and then adjusts the electrode. The position between the positions between the raw materials in the crucible is 1.5mm, and the furnace door, the inlet and the deflation valve are closed, and the furnace cavity is vacuumped to reduce the air pressure to 1.2 × 10 -3 PA, subsequently charged into high purity argon to raise the furnace air pressure to 0.03Pa, then evacuate it again, so that the arc is started after three times, and the current is gradually increased, until the current value reaches 160A, here After the current value...

Embodiment 2

[0036] Pure Al, pure Ni metal is cut into 6 × 6 × 6mm 3 After the square, it was polished with water sandpaper, and then pure Al, pure Ni metal block and sponge Ti were placed in anhydrous ethanol to clean 10 min, and then put it in a vacuum drying box, after drying at 80 ° C for 14 minutes, press NI. The mass percentage of 20 wt.%, Ti has a mass percentage of 5 wt.%, The rest is Al, weighs a total mass of 12 g and places it into the copper crucible of the micro-arc furnace, and then adjusts the electrode. The position is 2mm between the pitch between the raw materials in the crucible, sequentially close the furnace door, the inlet and the deflation valve proceeds to the furnace cavity, so that the air pressure drops to 1.5 × 10 -3 PA, then charged into high purity argon to raise the furnace cavity to 0.05Pa, then evacuate it again, so that the arc is started after 4 times, and the current is gradually increased, until the current value reaches 170A, here After the current value i...

Embodiment 3

[0038] Pure Al, pure Ni metal is cut into 6 × 6 × 6mm 3 After the square, it was polished with water sandpaper, and then pure Al, pure Ni metal block and sponge Ti were placed in anhydrous ethanol to clean 12 minutes, then put it in a vacuum drying tank, dried at 100 ° C for 12 minutes and pressed according to Ni. The mass percentage of 23 wt.%, Ti has a mass percentage of 6 wt.%, The rest is Al, weighs a material having a total mass of 15 g and places it into the copper crucible of the micro-arc furnace, and then regulates the electrode. The position is 2.5 mm between the raw materials in the crucible, and then close the furnace door, the inlet and the deflation valve, so that the furnace cavity is vacuum-processed, so that the air pressure drops to 1.5 × 10 -3 PA, subsequently charged into high purity argon to raise the furnace air pressure to 0.07Pa, then evacuate it again, so that the arc is started after 4 times, and the current is gradually increased, until the current value...

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Abstract

The invention relates to a composite inoculant for refining a high-damping zinc-aluminum alloy structure. The inoculant comprises the following elements in percentage by mass: 18 to 23% of Ni, 4 to 6% of Ti and the balance of Al. Ni and Ti respectively react with Al in situ to generate Al3Ni particles and Al3Ti particles. The sizes of the Al3Ni particles and the Al3Ti particles range from the submicron order to the micron order. The composite inoculant can effectively refine the structure of the zinc-aluminum alloy, can remarkably improve the strength, plasticity and damping performance of the refined zinc-aluminum alloy, and overcomes the defects that an existing refiner is not enough in refining degree of the zinc-aluminum alloy, the preparation process of the inoculant is complex, and improvement of the mechanical property of the refined zinc-aluminum alloy is limited.

Description

Technical field [0001] The technical solution of the present invention relates to an aluminum-based composite, specifically a high-damped zinc aluminum alloy tissue refined (Al 3 Ni + al 3 Ti) / Al composite gestation agent. Background technique [0002] In recent years, the rapid development of modern industrial technology has enabled a large number of high-precision and high-power engineering machinery. While bringing well to society, military, and defense, they also brought serious vibration and noise pollution. Vibration and noise not only destroy people, machine working environment, which makes the human body easy to get sick, but also causes the work efficiency of mechanical equipment to decrease and shortened service life. In the military field, the vibration and noise of the weapons is not only very easy to destroy their internal precision electronic components, but also affect the strike accuracy of the weapons, and reduce the survival capacity of stealth weapons. Theref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/02C22C1/03C22C18/04
CPCC22C21/00C22C1/026C22C1/03C22C18/04Y02P10/20
Inventor 王清周张建军殷福星余晖冀璞光焦志娴刘力
Owner HEBEI UNIV OF TECH
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