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Aluminum-titanium-boron-carbon-magnesium intermediate alloy and preparation process thereof

An intermediate alloy and preparation process technology, applied in the field of alloy materials, can solve the problems of poor toughness, unstable mechanical properties, low strength, etc., and achieve the effects of stable mechanical properties, promotion of reaction synthesis, and high strength

Inactive Publication Date: 2013-07-03
周凡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an aluminum-titanium-boron-carbon-magnesium master alloy and its preparation process to overcome the low strength, poor toughness and poor mechanical properties of aluminum-titanium-boron master alloys in the prior art. stable defect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] First of all, calculate the ratio according to the following weight percentages to prepare the raw materials needed for the aluminum-titanium-boron-carbon-magnesium master alloy, potassium fluorotitanate: 10%; potassium fluoroborate: 5%; graphite powder: 1%; magnesium powder : 1%; the balance is pure aluminum (industrial pure aluminum is generally defined as aluminum with a purity of 99.0% to 99.9%, and in China it is defined as aluminum with a purity of 98.8% to 99.7%);

[0016] Then, use the molding equipment to press the graphite powder and magnesium powder with a good ratio into a prefabricated block under a pressure of 60 MPa, and dry it at a temperature of 450 ° C for 2 hours;

[0017] Then adopt the thermal explosion synthesis method, put the proportioned pure aluminum in an intermediate frequency furnace and melt it to 1000 ° C, then add the proportioned potassium fluorotitanate and potassium fluoroborate to melt it, let it stand for 35 minutes, and then remove t...

Embodiment 2

[0021] First of all, calculate the ratio according to the following weight percentages to prepare the raw materials needed for the aluminum-titanium-boron-carbon-magnesium master alloy, potassium fluotitanate: 35%; potassium fluoborate: 22.5%; graphite powder: 24.5%; magnesium powder : 24.5%; the balance is pure aluminum (industrial pure aluminum is generally defined as aluminum with a purity of 99.0% to 99.9%, and in China it is defined as aluminum with a purity of 98.8% to 99.7%);

[0022] Then, use the molding equipment to press the graphite powder and magnesium powder with a good ratio into a prefabricated block under a pressure of 60MPa, and dry it at a temperature of 400°C for 0.5h;

[0023] Then adopt the thermal explosion synthesis method, put the proportioned pure aluminum in an intermediate frequency furnace and melt it to 780 ° C, then add the proportioned potassium fluotitanate and potassium fluoborate to melt it, let it stand for 20 minutes, and then remove the sla...

Embodiment 3

[0027] First of all, the raw materials required for the preparation of Al-Ti-B-C-Mg master alloy are calculated according to the following weight percentages, potassium fluorotitanate: 80%; potassium fluoroborate: 50%; graphite powder: 30%; magnesium powder : 30%; the balance is pure aluminum (opening of pure aluminum is generally defined as aluminum with a purity of 99.0% to 99.9%, and China is defined as aluminum with a purity of 98.8% to 99.7%);

[0028] Then, use the molding equipment to press the graphite powder and magnesium powder with a good ratio into a prefabricated block under a pressure of 60 MPa, and dry it at a temperature of 500 ° C for 4 hours;

[0029] Then adopt the thermal explosion synthesis method, put the proportioned pure aluminum in an intermediate frequency furnace and melt it to 1200 ° C, then add the proportioned potassium fluorotitanate and potassium fluoroborate to melt it, let it stand for 50 minutes, and then remove the slag;

[0030] Then raise ...

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Abstract

The invention discloses an aluminum-titanium-boron-carbon-magnesium intermediate alloy and a preparation process of the aluminum-titanium-boron-carbon-magnesium intermediate alloy, wherein the alloy comprises the chemical components of 10%-80% of potassium fluotitanate, 5%-50% of potassium fluoborate, 1%-30% of graphite powder, 1%-30% of magnesium powder, and the balance of pure aluminum according to weight percentage. The preparation process of the alloy is as follows: pressing the graphite powder and the magnesium powder into a prefabricated block according to a proportion, drying the prefabricated block at the temperature of 400-500 DEG C for 0.5-4 hours, melting the pure aluminum according to the proportion in an intermediate frequency furnace through a thermal explosion synthesis method, raising the temperature to be 780-1200 DEG C, then melting the potassium fluotitanate and the potassium fluoborate at a proportion, standing for 20-50 minutes and then slagging off, then raising the temperature of the intermediate frequency furnace to be 1000-1600 DEG C, then adding the prefabricated block, standing after stirring, adding a refining agent to refine, and finally pouring into a wire rod. The intermediate alloy provided by the invention has the characteristics of higher strength, better toughness and more stable mechanical property.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to an aluminum-titanium-boron-carbon-magnesium master alloy and a preparation process thereof. Background technique [0002] In the prior art, there are problems of structural defects and poor wettability in the Al-Ti-B master alloy. Because of the performance of Al-Ti-B and its metallographic structure TiAl 3 and AlB 2 , TiC, Mg 2 Al 3 The morphology, size and distribution of particles have a great relationship, and the metallographic structure has a great relationship with the manufacturing method of the alloy, mainly related to the introduction method of C and Mg, because the wettability between C atoms and Al is extremely Therefore, it is difficult to add C atoms into Al-Ti-B by traditional methods, which leads to the defects of low strength, poor toughness and unstable mechanical properties in the Al-Ti-B master alloy in the prior art. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/03C22C1/06
Inventor 周凡
Owner 周凡
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