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Preparation method for TiC-TiB2/Al composite inoculant

A composite inoculant, tic-tib2 technology, applied in the field of aluminum-based alloys, can solve the problems of coarse particle size of reinforcement, unstable thermodynamic properties, expensive process energy consumption of raw materials, etc., and achieves good wettability, no interface reaction, Enhance the effect of fine particle size

Active Publication Date: 2019-08-16
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is: to provide TiC-TiB 2 / Al composite inoculant preparation method, using high-energy ball milling and external cold pressing method, using in-situ autogenous reaction and rapid solidification technology to prepare thin ribbon-shaped TiC-TiB 2 / Al composite inoculant overcomes the shortcomings of the inoculant prepared in the prior art, such as coarse reinforcement particle size, uneven distribution, easy aggregation, unstable thermodynamic properties and low interfacial bonding strength, and also overcomes the disadvantages of expensive raw materials and The defect of high process energy consumption

Method used

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  • Preparation method for TiC-TiB2/Al composite inoculant
  • Preparation method for TiC-TiB2/Al composite inoculant
  • Preparation method for TiC-TiB2/Al composite inoculant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The first step is to configure the raw materials:

[0042] Take commercially available Al powder 5g, Ti powder 1g, B 4 C 1g and graphene 0.05g, to configure raw materials;

[0043] The second step is to prepare the master alloy:

[0044] Put the raw materials configured in the first step above in a ball mill jar with an inner diameter of 5 cm and a height of 6 cm, fill it with absolute ethanol, and set the vacuum degree to 5×10 0 MPa, the ball milling speed is 300r / min, and the ball milling time is 10h. After the ball milling is completed, take out the wet-milled powder and put it in a vacuum drying oven for drying, and set the vacuum degree to 5×10 0 MPa, the temperature is 80°C, and the time is 12h. Then, take out the powder in the vacuum drying oven, apply a pressure of 300MPa on the TYE-2000B press, and keep it for 15min to obtain a block, and then place the block in a vacuum degree of 5×10 0 In a vacuum tube furnace of MPa, the sintering is carried out in secti...

Embodiment 2

[0048] The first step is to configure the raw materials:

[0049] Take commercially available Al powder 10g, Ti powder 2g, B 4 C 2g and graphene 0.1g, to prepare raw materials;

[0050] The second step is to prepare the master alloy:

[0051] With embodiment 1;

[0052] The third step is to prepare TiC-TiB 2 / Al composite inoculant:

[0053] Put the master alloy prepared in the second step above for rapid solidification in the LZK-12A vacuum quenching furnace. The specific operation is to place the master alloy in the copper crucible of the vacuum quenching furnace. The copper crucible needs to be burnt with paper Grind and wipe clean with anhydrous ethanol to remove impurities. LZK-12A vacuum quenching furnace maintains a vacuum degree of 5×10 -3 Pa, and using argon as a protective gas, the master alloy in the copper crucible is completely melted by shaking the flame of the tungsten pole head, and then the master alloy melt flows to the high-speed rotating molybdenum whe...

Embodiment 3

[0055] The first step is to configure the raw materials:

[0056] Take commercially available Al powder 20g, Ti powder 4g, B 4 C 4g and graphene 0.2g, to prepare raw materials;

[0057] The second step is to prepare the master alloy:

[0058] With embodiment 1;

[0059] The third step is to prepare TiC-TiB 2 / Al composite inoculant:

[0060] Put the master alloy prepared in the second step above for rapid solidification in the LZK-12A vacuum quenching furnace. The specific operation is to place the master alloy in the copper crucible of the vacuum quenching furnace. The copper crucible needs to be burnt with paper Grind and wipe clean with anhydrous ethanol to remove impurities. LZK-12A vacuum quenching furnace maintains a vacuum degree of 5×10 -3 Pa, and using argon as a protective gas, the master alloy in the copper crucible is completely melted by shaking the flame of the tungsten pole head, and then the master alloy melt flows to the high-speed rotating molybdenum whe...

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Abstract

The invention discloses a preparation method for TiC-TiB2 / Al composite inoculant, and relates to aluminium-based alloy. The preparation method for the TiC-TiB2 / Al composite inoculant comprises the following steps that the required amount of commercially available Al powder, Ti powder, B4C and grapheme are proportioned according to the mass fraction ratio of 5 to 5 to 1 to 0.05 so as to complete preparation of the raw materials; high-energy ball milling, cold pressing external adding and in-situ self-generating reaction are adopted to prepare a master alloy; and a rapid solidification technology is adopted to prepare the TiC-TiB2 / Al composite inoculant. According to the preparation method for the TiC-TiB2 / Al composite inoculant, the defects that in the case of an inoculant prepared in the prior art, a reinforcement body is thick and large in particle size, distribution is uneven, gathering is prone to occurrence, the thermodynamic property is unstable, and the interface bonding strengthis low are overcome, and the defects that the applied raw materials are expensive and the process energy consumption is relatively high are also overcome.

Description

technical field [0001] The technical solution of the present invention relates to aluminum-based alloys, specifically TiC-TiB 2 The preparation method of / Al composite inoculant. Background technique [0002] Adding inoculants to aluminum and aluminum alloy melts is recognized as one of the effective methods to change the grains from coarse dendrites to equiaxed crystals, and in the use of inoculants, the amount added is relatively small , the general amount added is a few thousandths to a few percent of the amount of the matrix material. The inoculants used earlier were all prepared by traditional preparation methods, such as first preparing the matrix material by powder metallurgy, spray molding or various casting techniques, and then adding particle reinforcement phases, such as SiC, NbC, Al 2 o 3 , ZrO, B 4 C or AlB 2 The granules are added to the matrix material in molten or powder state, from which the corresponding required inoculants are prepared. The inoculant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C32/00C22C1/10
CPCC22C1/1005C22C1/1036C22C21/00C22C32/0047
Inventor 崔春翔李崇超王新赵立臣刘水清
Owner HEBEI UNIV OF TECH
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