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Aluminum-zirconium-phosphorus master alloy and preparation method thereof

A phosphorus master alloy and master alloy technology, applied in the field of aluminum-zirconium-phosphorus master alloy and its preparation, can solve the problem of phosphorus content reduction

Inactive Publication Date: 2009-12-30
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the above-mentioned three aluminum-based master alloys, P exists in the master alloy system in the form of AlP. Since AlP is easy to react with water vapor in the air to be oxidized and hydrolyzed, the phosphorus content in the master alloy gradually decreases during the preservation process. reduce

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] (1) The raw materials are weighed according to the mass percentage of industrial pure aluminum 9.7%, aluminum-phosphorus master alloy 73.3%, and sponge zirconium 17.0%, wherein the phosphorus content of the aluminum-phosphorus master alloy is 7.5%.

[0015] (2) Melt industrial pure aluminum to 1100°C-1300°C in a melting furnace, first add aluminum-phosphorus master alloy, stir for 10-20 minutes, then add sponge zirconium.

[0016] (3) After the reaction is complete and stirred evenly, it is directly poured into an ingot or prepared into a wire.

[0017] An aluminum-zirconium-phosphorus master alloy with an optimal composition is obtained according to the above-mentioned proportion and process, and the mass percent of its chemical composition is: phosphorus 5.3-5.7, zirconium 16.7-17.3, and the rest is aluminum.

Embodiment 2

[0019] (1) The raw materials are weighed according to the mass percentage of industrial pure aluminum 20.3%, aluminum-phosphorus master alloy 66.7%, and sponge zirconium 13%, wherein the phosphorus content of the aluminum-phosphorus master alloy is 6.0%.

[0020] (2) Melt industrial pure aluminum to 1000°C-1200°C in a melting furnace, first add aluminum-phosphorus master alloy, stir for 10-20 minutes, then add sponge zirconium.

[0021] (3) After the reaction is complete and stirred evenly, it is directly poured into an ingot or prepared into a wire.

[0022] The aluminum-zirconium-phosphorus master alloy prepared according to the above-mentioned proportion and process has the following mass percentages of chemical composition: phosphorus 3.8-4.1, zirconium 12.7-13.2, and the rest is aluminum.

Embodiment 3

[0024] (1) The raw materials are weighed according to the mass percentage of industrial pure aluminum 36.9%, aluminum-phosphorus master alloy 57.1%, and sponge zirconium 6.0%, wherein the phosphorus content of the aluminum-phosphorus master alloy is 3.5%.

[0025] (2) Melt industrial pure aluminum to 900°C-1100°C in a melting furnace, first add aluminum-phosphorus master alloy, stir for 10-20 minutes, then add sponge zirconium.

[0026] (3) After the reaction is complete and stirred evenly, it is directly poured into an ingot or prepared into a wire.

[0027] The aluminum-zirconium-phosphorus master alloy prepared according to the above-mentioned proportion and process has the following mass percentages of chemical composition: phosphorus 1.8-2.2, zirconium 5.9-6.2, and the rest is aluminum.

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Abstract

The invention belongs to the field of metal materials, relating to an aluminum-zirconium-phosphorus master alloy used for refining eutectic and primary silicon in hypereutectic Al-siliceous ferroalloy and a preparation method thereof. In a master alloy system, P exists in a mode of a ZrP compound which contains the following components by weight percent 78.0 percent to 94.0 percent of aluminum, 3.0 percent to 20.0 percent of zirconium and 1.0 percent to 6.0 percent of phosphorus. The preparation method comprises the following steps: preparing industrial pure aluminum, aluminum-phosphorus master alloy, sponge zirconium or potassium fluorozirconate according to the ratio; melting the industrial pure aluminum to 900 DEG C to 1300 DEG C in a melting furnace; firstly adding the aluminum-phosphorus master alloy to mix for 10 to 20 min; and then adding the sponge zirconium or the potassium fluorozirconate to fully react and uniformly mix, and directly casting the mixture to form a ingot or prepare a wire. The aluminum-zirconium-phosphorus master alloy has favorable refining effect, and can remarkably improve the high temperature mechanical properties of the alloy.

Description

1. Technical field [0001] The invention belongs to the field of metal materials, in particular to an aluminum-zirconium-phosphorus master alloy used for refining primary silicon in eutectic and hypereutectic aluminum-silicon alloys and a preparation method thereof. 2. Background technology [0002] At present, the refinement of primary silicon in eutectic and hypereutectic aluminum-silicon alloys mainly adopts the method of adding intermediate alloys. Since Sterner and Rainer invented the patent of phosphorus refining primary silicon in the 1930s, the research on phosphorus-containing master alloys has made great progress, such as copper-phosphorus, aluminum-copper-phosphorus, aluminum-iron-phosphorus And aluminum-silicon-phosphorus and other master alloys. The copper-phosphorus master alloy has a high density, is easy to precipitate and segregate, and has an unstable deterioration effect. It is not suitable for static furnace production and brings copper component pollutio...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C1/03C22C1/10
Inventor 刘相法左敏姜琨武玉英
Owner SHANDONG UNIV
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