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Aluminum-titanium-iron-carbon-boron intermediate alloy and preparation method thereof

An intermediate alloy and pure titanium technology, applied in the field of metal materials, can solve the problems of high cost, affecting product cleanliness, high content of inclusions, etc., and achieve high production efficiency, good grain refinement effect, and low raw material cost.

Active Publication Date: 2012-07-11
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The patent proposes to use aluminum-boron and aluminum-carbon intermediate alloys as raw materials, which not only has high cost, but also contains high inclusions, which affects the cleanliness of the final product.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (1) The required raw materials are prepared according to the following mass percentages: 96.50% pure aluminum, 3.00% pure titanium, 0.35% iron-boron-carbon master alloy, and 0.15% graphite. Wherein, the mass percentage of boron in the iron-boron-carbon master alloy is 30.00%, and the mass percentage of carbon is 5.00%.

[0015] (2) Melt pure aluminum in an induction furnace and heat it up to about 1000°C, add pure titanium, iron-boron-carbon intermediate alloy and graphite, keep warm at this temperature and stir for 10 minutes, then cast into ingots or wire rods .

[0016] The aluminum-titanium-iron-carbon-boron master alloy prepared according to the above ratio and process has the following mass percentages of chemical composition: titanium 2.95-3.05%, iron 0.25-0.35%, carbon 0.13-0.17%, boron 0.09-0.11 %, the balance is aluminum.

Embodiment 2

[0018] (1) Prepare the required raw materials according to the following mass percentages: 93.25% pure aluminum, 5.00% pure titanium, 1.50% iron-boron-carbon master alloy, and 0.25% graphite. Wherein, the mass percentage of boron in the iron-boron-carbon master alloy is 20.00%, and the mass percentage of carbon is 6.00%.

[0019] (2) Melt pure aluminum in an induction furnace and raise the temperature to 1150°C, add pure titanium, iron-boron-carbon intermediate alloy and graphite, keep warm at this temperature and stir for 20 minutes, then cast into ingots or wire rods.

[0020] The aluminum-titanium-iron-carbon-boron master alloy prepared according to the above ratio and process has the following mass percentages of chemical composition: 4.95-5.05% titanium, 1.05-1.25% iron, 0.28-0.32% carbon, and 0.28-0.32 boron %, the balance is aluminum.

Embodiment 3

[0022] (1) First prepare the required raw materials according to the following mass percentages: 90.10% pure aluminum, 7.50% pure titanium, 2.40% iron-boron-carbon master alloy; wherein the quality of boron in the iron-boron-carbon master alloy is 100% The content of carbon is 25.00%, and the mass percentage of carbon is 10.00%.

[0023] (2) Melt pure aluminum in an induction furnace and raise the temperature to 1250°C, add pure titanium and iron-boron-carbon intermediate alloy, keep warm at this temperature and stir for 15 minutes before casting into an ingot.

[0024] The aluminum-titanium-iron-carbon-boron master alloy prepared according to the above ratio and process has the following mass percentages of chemical composition: 7.40-7.60% titanium, 1.55-1.65% iron, 0.22-0.26% carbon, and 0.58-0.62 boron %, the balance is aluminum.

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Abstract

The invention belongs to the field of metal materials and relates to aluminum-titanium-iron-carbon-boron intermediate alloy for refining aluminum and aluminum alloy and a preparation method thereof. The aluminum-titanium-iron-carbon-boron intermediate alloy comprises five elements, i.e. aluminum, titanium, iron, carbon and boron and comprises the following the components in percentage by weight: 85-95 percent of aluminum, 1.00-10.00 percent of titanium, 0.10-6.50 percent of iron, 0.01-1.00 percent of carbon and 0.01-1.00 percent of boron. The preparation method of the aluminum-titanium-iron-carbon-boron intermediate alloy comprises the following steps of: putting the pure aluminum into an intermediate frequency furnace to smelt and raising the temperature to 850-1300 DEG C; adding a certain mass percentage of pure titanium, iron-boron-carbon middle intermediate alloy and graphite, heat-insulating and agitating for 5-30 minutes to pour into an ingot or a make into a wire. The preparation method has the advantages of simple process, environment friendliness and low cost and is suitable for industrial production; the prepared aluminum-titanium-iron-carbon-boron intermediate alloy hasexcellent crystal grain refining effect on the aluminum and the aluminum alloy.

Description

technical field [0001] The invention belongs to the field of metal materials, in particular to an aluminum-titanium-iron-carbon-boron master alloy for refining aluminum and aluminum alloy grains and a preparation method thereof. Background technique [0002] With the increasing application of aluminum and its alloys, people's requirements for the improvement of its structure and performance are also getting higher and higher. Refining the structure of aluminum alloy can significantly improve its mechanical properties. At present, in industrial production, the grains are refined mainly by adding nucleating agents. Commonly used nucleating agents are aluminum-titanium-boron, aluminum-titanium-carbon master alloy, etc. Among them, the aluminum-titanium-boron master alloy has always occupied a dominant position in the aluminum processing industry, but due to the TiB in the master alloy 2 Particles will gather in the melt, which will cause quality problems of some products; at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/03C22C1/10
Inventor 刘相法王涛聂金凤李鹏廷
Owner SHANDONG UNIV
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