Manufacturing process for high-temperature-resistant aluminium-based composite material board

An aluminum-based composite material and a preparation process technology, applied in the field of aluminum alloy sheets, can solve the problems of poor high temperature mechanical properties and the like

Inactive Publication Date: 2019-01-29
ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the problems of poor high-temperature mechanical properties of existing aluminum alloy plates, the purpose of the present invention is to provide a preparation process for high-temperature-resistant aluminum-based composite material plates that can effectively improve the high-temperature mechanical properties of aluminum alloys and have good dimensional stability in the working temperature range

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The components and their mass percentages of the present invention are: Zn 6.5%, Cu 2.0%, Mg 2.9%, Zr 0.15%, Cr 0.15%, TiB 2 10% particles, the balance is Al. The preparation of the high temperature resistant aluminum matrix composite material plate includes the following steps:

[0064] (1) Melt the industrial pure aluminum ingot in the crucible, the temperature rises to 850 ℃ to KBF 4 、K 2 TiF 6 Mix evenly and add it to the aluminum melt at a mass ratio of 1:2, and carry out mechanical stirring. At the same time, high-purity argon gas is introduced into the melt. After the reaction is completely cooled to 780°C, the residue is removed.

[0065] (2) Add industrial Al-50%Cu, Al-5%Zr, Al-4%Cr, pure Zn, pure Mg in sequence according to the above ratio, refine, remove slag, and pour into a slab at a temperature of 730°C.

[0066] (3) Homogenize and anneal the cast slab at 470°C for 6 hours, and control the temperature at 460°C, and perform 8 passes of hot rolling to ob...

Embodiment 2

[0070] The components and their mass percentages of the present invention are: Zn 6%, Cu 1.8%, Mg 2.6%, Zr 0.15%, Cr 0.1%, TiB 2 15% particles, the balance is Al.

[0071] The preparation of the high temperature resistant aluminum matrix composite material plate includes the following steps:

[0072] (1) Melt the industrial pure aluminum ingot in the crucible, the temperature rises to 900 ℃ and the KBF 4 、K 2 TiF 6 Mix evenly and add it to the aluminum melt at a mass ratio of 1:1, carry out mechanical stirring, and at the same time pass high-purity argon into the melt, wait for the reaction to completely cool down to 780°C, and remove the residue.

[0073] (2) Add industrial Al-50%Cu, Al-5%Zr, Al-4%Cr, pure Zn, pure Mg in sequence according to the above ratio, refine, remove slag, and pour into a slab at a temperature of 780°C.

[0074] (3) Homogenize and anneal the slab at 465° C. for 8 hours, and control the temperature at 440° C., and carry out 6 passes of hot rolling t...

Embodiment 3

[0078] The components and their mass percentages of the present invention are: Zn 7%, Cu 1.6%, Mg 2.9%, Zr 0.2%, Cr 0.1%, TiB 2 2% particles, the balance is Al.

[0079] The preparation of the high temperature resistant aluminum matrix composite material plate includes the following steps:

[0080] (1) Melt the industrial pure aluminum ingot in the crucible, the temperature rises to 800 ℃ to KBF 4 、K 2 TiF 6 Mix evenly and add to the aluminum melt at a mass ratio of 1:1.5, and carry out mechanical stirring. At the same time, high-purity argon gas is introduced into the melt, and the reaction is completely cooled to 760°C, and the residue is removed.

[0081] (2) Add industrial Al-50%Cu, Al-5%Zr, Al-4%Cr, pure Zn, pure Mg in sequence according to the above proportions, refine, remove slag, and pour into a slab at a temperature of 750°C.

[0082] (3) Homogenize and anneal the cast slab at 460°C for 10 hours, and control the temperature at 420°C, and perform 5 passes of hot r...

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Abstract

The invention discloses a manufacturing process for a high-temperature-resistant aluminium-based composite material board. The manufacturing process comprises the following steps of (1) melting industrial pure aluminium ingot in a crucible, mixing KBF4 and K2TiF6 in certain proportion, and adding a mixture into aluminium melt, performing mechanical stirring to generate TiB2 particles in situ, removing slag, adding alloy elements, and refining; (2) conducting homogenizing annealing on a refined aluminium-based composite material casting blank for 2-30 hours at a temperature of 460-520 DEG C, uniformly keeping inner and outer temperatures of the annealed aluminium-based composite material casting blank to be 360-460 DEG C, and performing hot-rolling by 3-10 passes to obtain a board; and (3)performing solid-solution treatment for 1-5 hours on the board at a temperature of 460-470 DEG C, performing water-quenching, performing ageing thermal treatment for 12-48 hours at a temperature of 120-140 DEG C, and cooling to the room temperature to obtain the final board finished product. The prepared aluminium-based composite material board has the good high-temperature mechanical property.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy plates, and in particular relates to a preparation process of high temperature resistant aluminum matrix composite material plates. Background technique [0002] Aluminum alloy has excellent properties such as light weight, high specific strength, and high thermal conductivity, and is widely used in aerospace, aviation, national defense, transportation and other fields, especially in lightweight applications. However, with the rapid development of the manufacturing industry, various fields have put forward higher requirements for the high comprehensive performance of aluminum alloys, especially excellent high-temperature mechanical properties and wear resistance. Traditional aluminum alloy sheets are prone to failure at high temperatures, and it has been difficult to meet the performance requirements of today's market for aluminum alloys with high mechanical properties at high temperatures....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C21/10C22C32/00C22C1/10C22C1/02C22F1/04C22F1/053
CPCC22C1/1036C22C21/003C22C21/10C22C32/0073C22F1/002C22F1/04C22F1/053C22C1/1052
Inventor 郭彩玉张枫李春明杨勇陈林左玲立孙川
Owner ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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