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Zn-Al alloy containing Ta and Te elements and preparation method thereof

A technology of aluminum alloy and tantalum alloy, which is applied in the field of zinc-aluminum alloy and its preparation, can solve problems such as the limitation of improving mechanical properties, and achieve the effects of improving mechanical properties, increasing nucleation rate, and enhancing particle nucleation ability

Inactive Publication Date: 2015-12-09
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the improvement of mechanical properties by alloying zinc-aluminum alloys with copper and magnesium is limited to a certain extent.

Method used

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  • Zn-Al alloy containing Ta and Te elements and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] A zinc-aluminum alloy containing tantalum and tellurium elements, the mass percentage composition is Zn-30Al-2Cu-0.02Mg-0.05Ta-0.045Te, and the preparation process is as follows:

[0024] (1) Prepare raw materials according to the desired quality and chemical composition of zinc-aluminum alloy: zinc (purity 99.99%), aluminum (purity 99.7%), Al-40wt.%Mg alloy, Al-50wt.%Cu alloy, Zn -27wt.%Al-7wt.%Ta alloy and Al-6.5Te alloy;

[0025] (2) Put the three raw materials of zinc, aluminum and aluminum-copper alloy into the electric furnace for melting to obtain a zinc-aluminum alloy melt with a temperature in the range of 660-720°C;

[0026] (3) Add Al-40wt.%Mg alloy, Zn-27Al-7Ta alloy and Al-6.5Te alloy to the zinc-aluminum alloy melt in step 2), keep it warm at 690-750°C for 10-25min, and then use a carbon rod Stir the melt (60-150 rpm), pour the alloy melt into the mold, and obtain the zinc-aluminum alloy containing tantalum and tellurium elements in this embodiment after ...

Embodiment 2

[0028] A zinc-aluminum alloy containing tantalum and tellurium elements is composed of Zn-30Al-1.8Cu-0.025Mg-0.05Ta-0.1Te alloy in mass percent. Except for changing the amount of raw materials to match the composition of the alloy to be prepared, the rest of the preparation process is the same as in Example 1.

Embodiment 3

[0030] A zinc-aluminum alloy containing tantalum and tellurium elements is composed of Zn-30Al-2Cu-0.02Mg-0.05Ta-0.31Te alloy in mass percent. The rest of the preparation process is the same as in Example 1 except that the amount of raw materials is matched with the composition of the alloy to be prepared.

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Abstract

The invention discloses Zn-Al alloy containing Ta and Te elements. The Zn-Al alloy is formed by components of, by mass, 0.05-0.35% of Ta, 0.045-0.31% of Te, 0.015-0.025% of Mg, 1.8-2.4% of Cu, 26-31% of Al and the balance Zn. The invention further discloses a preparation method of the alloy. In the alloy, Ta forms TaAl(y-x)Znx compound particles, and a grain refinement effect is produced. Te can greatly improve the surface activity of the TaAl(y-x)Znx compound particles and is transformed into fine Al2Te3 particles after being solidified to be dispersed in a matrix, so that the nucleation capacity of the particles is greatly enhanced, and the nucleation rate is improved; compared with Zn-Al alloy without Ta and Te elements or with only one of the elements, the mechanical performance of the Zn-Al alloy with both Ta and Te elements added is improved.

Description

technical field [0001] The invention belongs to the technical field of metal alloy materials, and relates to a zinc-aluminum alloy containing trace elements of tantalum and tellurium and a preparation method thereof. Background technique [0002] Zinc-aluminum alloy has good casting process, machining process performance and good mechanical properties, and is widely used. In actual production, different methods are often used to treat binary zinc-aluminum alloys to improve their microstructure and further improve their mechanical properties. These methods mainly include heat treatment, grain refinement, alloying and so on. Alloying is to add appropriate amount of other elements on the basis of binary zinc-aluminum alloy to obtain a multi-element alloy with zinc-aluminum as the matrix. It has been found that adding a small amount of copper and magnesium elements to zinc-aluminum alloys can improve the performance of zinc-aluminum alloys, which is mainly due to two effects: ...

Claims

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Application Information

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IPC IPC(8): C22C18/04C22C1/03C22F1/16
Inventor 王振卿李佐政左敏赵德刚杨中喜
Owner UNIV OF JINAN
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