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Rapid solidification Al-Ti-B-Sc intermediate alloy refiner and preparation method thereof

A technology of al-ti-b-sc and master alloy, which is applied in the field of preparation of rapid solidification Al-Ti-B-Sc master alloy refiner, which can solve the problems of poor dispersion of refiner, complicated process and various raw materials , to achieve increased solubility, simple preparation process, and short smelting time

Inactive Publication Date: 2015-05-27
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention overcomes the disadvantages of poor dispersibility of refiner in the prior art, various raw materials, complex process and high energy consumption, and further enhances the refinement effect on aluminum alloy

Method used

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  • Rapid solidification Al-Ti-B-Sc intermediate alloy refiner and preparation method thereof
  • Rapid solidification Al-Ti-B-Sc intermediate alloy refiner and preparation method thereof
  • Rapid solidification Al-Ti-B-Sc intermediate alloy refiner and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The first step is to prepare Al-Ti-B-0.1Sc master alloy ingot

[0037] According to the mass percentage of each component element in the target alloy: Ti is 4.75%, B is 0.95%, Sc is 0.1%, and the rest is Al. The raw materials are traditional Al-5Ti-1B alloy and Al-2Sc alloy ingot, scandium When the content of the obtained Al-Ti-B-Sc master alloy is 0.1%, carry out the proportioning and prepare the materials; melt the weighed Al-5Ti-1B alloy at 700°C until all the Al-5Ti-1B alloy ingots are completely melted Afterwards, stir for 1 minute to remove surface impurities. After standing for 1 minute, add the weighed Al-2Sc alloy into the melt, raise the temperature to 740°C, and stir for 1 minute after the added Al-2Sc alloy is completely melted. Minutes, remove surface impurities, keep it for 2 minutes, pour into a mold preheated at 150 ° C, and make an Al-Ti-B-0.1Sc alloy ingot, the as-cast structure includes α (Al) and TiAl 3 、TiB 2 、Al 3 Sc and other particles.

[003...

Embodiment 2

[0045] The first step is to prepare Al-Ti-B-0.3Sc master alloy ingot

[0046] According to the mass percentage of each component element in the target alloy: Ti is 4.25%, B is 0.85%, Sc is 0.3%, and the rest is Al. The raw materials are traditional Al-5Ti-1B alloy and Al-2Sc alloy ingot, scandium When the content of the obtained Al-Ti-B-Sc master alloy is 0.3%, the proportion is prepared and the material is prepared; the weighed Al-5Ti-1B alloy is melted at 700°C until all the Al-5Ti-1B alloy ingots are completely melted Afterwards, stir for 1 minute to remove surface impurities. After standing for 1 minute, add the weighed Al-2Sc alloy into the melt, raise the temperature to 740°C, and stir for 1 minute after the added Al-2Sc alloy is completely melted. Minutes, remove the surface impurities, let it stand for 2 minutes, pour it into a mold preheated at 150 ℃, and make an Al-Ti-B-0.3Sc alloy ingot, the as-cast structure includes α (Al) and TiAl 3 、TiB 2 、Al 3 Sc and other p...

Embodiment 3

[0054] The first step is to prepare Al-Ti-B-0.5Sc master alloy ingot

[0055]According to the mass percentage of each component element in the target alloy: Ti is 3.75%, B is 0.75%, Sc is 0.5%, and the rest is Al. The raw materials are traditional Al-5Ti-1B alloy and Al-2Sc alloy ingot, scandium When the content of the obtained Al-Ti-B-Sc master alloy is 0.5%, carry out the proportioning and prepare the materials; melt the weighed Al-5Ti-1B alloy at 700°C until all the Al-5Ti-1B alloy ingots are completely melted Afterwards, stir for 1 minute to remove surface impurities. After standing for 1 minute, add the weighed Al-2Sc alloy into the melt, raise the temperature to 740°C, and stir for 1 minute after the added Al-2Sc alloy is completely melted. Minutes, remove the surface impurities, let it stand for 2 minutes, pour it into a mold preheated at 150 ℃, and make an Al-Ti-B-0.3Sc alloy ingot, the as-cast structure includes α (Al) and TiAl 3 、TiB 2 、Al 3 Sc and other particles...

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Abstract

The invention provides a rapid solidification Al-Ti-B-Sc intermediate alloy refiner. The refiner is intermediate alloy and comprises, by mass, 3.75%-5% of Ti, 0.75%-1% of B, 0.1%-0.5% of Sc, and the balance Al. The cast structure of the refiner comprises particulate alpha-Al, TiAl3, TiB2, AlB2 and Al3Sc. The aluminum alloy refiner is an Al-Ti-B-Sc multi-element alloy refiner which comprises the rare earth element Sc and is acquired through rapid solidification. When the refiner is added to aluminum alloy, the aluminum alloy can be molten within a short time and can be evenly distributed more easily. When the refiner is applied, melting time can be shortened, and electric energy losses can be reduced.

Description

technical field [0001] The technical solution of the invention relates to the preparation of a rapidly solidified Al-Ti-B-Sc master alloy refiner, which belongs to the technical field of aluminum alloy additive applications. Background technique [0002] Aluminum alloy is light in weight, rich in resources and good in comprehensive performance, so its application in high-tech fields such as machinery, transportation, aerospace and military industry is increasing year by year. To produce high-quality aluminum alloy, it is very necessary to control the ingot structure, and one of the keys to control its structure and properties is to obtain fine and uniform equiaxed grains. Grain refinement is an important process for upgrading traditional materials and creating new alloys in the world recently. Grain refinement can not only improve the strength and toughness of materials, but also ensure good castability and excellent processing performance of materials. At present, the meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/00C22C1/03B22D27/20
Inventor 丁俭方正赵维民李永艳王志峰
Owner HEBEI UNIV OF TECH
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