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Aluminum alloy refiner intermediate alloy and preparation method thereof

A technology of master alloy and refiner, applied in the field of new refiner and its preparation, can solve the problems of loss of function and a large amount of impurities in the fluorine salt method, and achieve the effect of improving strength and good purity

Active Publication Date: 2015-09-16
HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0006] The fluorine salt method will produce a large amount of impurities, and will lose its effect due to the easy aggregation and precipitation of TiAl3 and TiB2 phases

Method used

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  • Aluminum alloy refiner intermediate alloy and preparation method thereof
  • Aluminum alloy refiner intermediate alloy and preparation method thereof
  • Aluminum alloy refiner intermediate alloy and preparation method thereof

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Embodiment Construction

[0025] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings, but it is not limited thereto. Any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention should be covered by the present invention. within the scope of protection.

[0026] The raw materials used in the present invention are double-zero aluminum (99.9), titanium powder (99.9), Mg-30% Gd (70wt.% of Mg, 30wt.% of Gd). in N 2 and SF 6 Under a (sulfur hexafluoride) protective atmosphere, the raw materials of each alloy combination alloy (unit: weight %) shown in Table 1 were melted. Melting of new Al-5Ti-Mg-Gd refiner in induction furnace. During smelting, the voltage is controlled between 300-400V, the current is controlled between 100-120A, and the melting temperature is between 1200°C and 1300°C. During the smelti...

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Abstract

The invention discloses an aluminum alloy refiner intermediate alloy and a preparation method thereof. The aluminum alloy refiner intermediate alloy is prepared by the following ingredients in parts by weight: 4.5-5.5% of titanium, 0.7-2.1% of magnesium, 0.3-0.9% of gadolinium, and the allowance of aluminum. The aluminum alloy refiner intermediate alloy is prepared by adopting an ultrasonic coupling electromagnetic stirring process, the ultrasonic power is controlled to be 1.5-2.0KW, the action time is 10-20min, the electro-magnetic induction voltage is 300-400V, and the electro-magnetic induction current is 100-120A. The aluminum alloy refiner intermediate alloy provided by the invention is good in purity and satisfactory in refining effect, and is applicable to refining aluminum alloy grains, therefore the intensity, refining effect and fatigue capacity of the aluminum alloy can be improved.

Description

technical field [0001] The invention relates to a novel refiner applicable to aluminum alloy refinement and a preparation method thereof, in particular to a refiner suitable for aluminum-silicon alloys and a preparation method thereof. Background technique [0002] Aluminum alloy has the advantages of light weight, electrical conductivity, thermal conductivity and corrosion resistance, and has been widely used in the fields of aviation, aerospace, automobiles and electronics. However, aluminum alloy has the problem of coarse as-cast structure in the casting process. In particular, there are a large number of columnar crystals, which cause a significant decrease in the mechanical properties of the aluminum alloy and significantly reduce the processability of the cast aluminum alloy. Therefore, in the process of aluminum alloy casting and processing, it is necessary to take various measures to refine the solidification structure of aluminum alloy to obtain a fine and uniform e...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/03C22C1/06
Inventor 尹冬松赵继涛王振廷安勇良徐家文南景富张忠凯韦霞君王春阳毛新宇王振玲钱兵羽陈永生刘兴宋良
Owner HEILONGJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY