Aluminum-yttrium-phosphorus interalloy and preparation method thereof

A phosphorus master alloy and a technology for master alloy, applied in the field of aluminum-yttrium-phosphorus master alloy and its preparation, can solve the problems of reduced refinement effect, reduced P content and the like

Inactive Publication Date: 2013-09-18
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical deficiency that P in the commonly used aluminum-based master alloy exists in the form of AlP, so that the content of P in the storage process is reduced and the refining effect is reduced. Aluminum-yttrium-phosphorus master alloy

Method used

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  • Aluminum-yttrium-phosphorus interalloy and preparation method thereof
  • Aluminum-yttrium-phosphorus interalloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) The raw materials are weighed according to the mass percentage of industrial pure aluminum 21.5%, aluminum-phosphorus master alloy 64.0%, and industrial pure yttrium 14.5%, wherein the mass percentage of aluminum in the aluminum-phosphorus master alloy is 92.5%, and the mass percentage of phosphorus is 7.5%;

[0024] (2) Melt industrial pure aluminum in a melting furnace, raise the temperature of the melting furnace to 1000°C-1100°C, first add aluminum-phosphorus intermediate alloy, stir for 5-10 minutes and mix well, then add industrial pure yttrium, and heat up to 1300°C ℃–1400℃, keep warm for 10-20 minutes;

[0025] (3) After stirring evenly, it can be directly poured into shape, which can be cast into ingots, prepared into wire rods or other shapes.

[0026] According to the above ratio and process, an aluminum-yttrium-phosphorus master alloy with the best composition can be obtained. The mass percentage of its chemical composition is: phosphorus 4.7-4.9%, yttr...

Embodiment 2

[0028] (1) The raw materials are weighed according to the mass percentage of industrial pure aluminum 8.0%, aluminum-phosphorus master alloy 70.0%, and aluminum-yttrium alloy 22.0%, wherein the mass percentage of aluminum in the aluminum-phosphorus master alloy is 95.0%, and the mass percentage of phosphorus 5.0%, the mass percentage of aluminum in the aluminum-yttrium alloy is 50%, and the mass percentage of yttrium is 50%;

[0029] (2) Melt industrial pure aluminum to 900°C-1050°C in a melting furnace, first add aluminum-phosphorus intermediate alloy, stir for 5-10 minutes, then add aluminum-yttrium alloy, heat up to 1200°C-1300°C, keep warm 10-15 minutes;

[0030] (3) After stirring evenly, it can be directly poured into shape, which can be cast into ingots, prepared into wire rods or other shapes.

[0031] The aluminum-yttrium-phosphorus master alloy prepared according to the above ratio and process has a chemical composition of 3.3-3.6% phosphorus, 10.8-11.2% yttrium, an...

Embodiment 3

[0033] (1) The raw materials are weighed according to the mass percentage of 22.9% of industrial pure aluminum, 57.1% of aluminum-phosphorus master alloy, and 20.0% of aluminum-yttrium alloy. Wherein the mass percentage of aluminum in the aluminum-phosphorus master alloy is 96.5%, the mass percentage of phosphorus is 3.5%, the mass percentage of aluminum in the aluminum-yttrium alloy is 70.0%, and the mass percentage of yttrium is 30.0%;

[0034] (2) Melt industrial pure aluminum to 850°C-1000°C in the melting furnace, first add aluminum-phosphorus intermediate alloy, after stirring for 5-10 minutes, then add aluminum-yttrium alloy, heat up to 1200°C-1250°C, Keep warm for 5-10 minutes;

[0035] (3) After stirring evenly, it can be directly poured into shape, which can be cast into ingots, prepared into wire rods or other shapes.

[0036] The aluminum-yttrium-phosphorus master alloy prepared according to the above-mentioned ratio and process has a chemical composition of 1.9-2...

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Abstract

The invention belongs to the field of metal materials, and relates to an aluminum-yttrium-phosphorus interalloy for refining primary crystal silicon in a eutectic and hypereutectic aluminum-silicon alloy and a preparation method thereof. In the interalloy system, P exists in the form of yttrium phosphide. The alloy comprises the following chemical components in percentage by mass: 80.0-97.5% of aluminum, 1.5-16.0% of yttrium and 0.5-5.0% of phosphorus. The preparation method comprises the following steps: proportionally preparing commercially pure aluminum, aluminum-phosphorus interalloy and commercially pure yttrium or aluminum-yttrium alloy; melting the commercially pure aluminum to 800-1100 DEG C in a smelting furnace, adding the aluminum-phosphorus interalloy, stirring for 5-10 minutes, adding the commercially pure yttrium or aluminum-yttrium alloy, and heating to 1200-1400 DEG C; and after completely reacting and uniformly stirring, directly casting into an ingot or preparing a wire. The aluminum-yttrium-phosphorus interalloy has favorable dual deterioration effects on the silicon phase in the eutectic and hypereutectic aluminum-silicon alloys, and can obviously enhance the mechanical properties of the alloy.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to an aluminum-yttrium-phosphorus master alloy used for refining primary silicon and eutectic silicon in eutectic and hypereutectic aluminum-silicon alloys and a preparation method thereof. Background technique [0002] In industrial production, the method of adding phosphorus is generally used to modify the primary silicon in eutectic and hypereutectic aluminum-silicon alloys, mainly including mixed refiners containing red phosphorus powder and phosphorus salt composite refiners and phosphorus-containing master alloys. Among them, the red phosphorus and phosphorus salt refining agents release a large amount of poisonous phosphorus pentoxide gas during use, which seriously pollutes the environment, and the phosphorus is burned seriously, the absorption rate is extremely low, and the deterioration effect is unstable. [0003] At present, the phosphorus-containing master al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00C22C1/03
Inventor 左敏赵德刚耿浩然王艳周国荣杨中喜
Owner UNIV OF JINAN
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