CN100342047C - In situ mixed granula reinforced aluminium base composite material - Google Patents

In situ mixed granula reinforced aluminium base composite material Download PDF

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Publication number
CN100342047C
CN100342047C CNB2005100282102A CN200510028210A CN100342047C CN 100342047 C CN100342047 C CN 100342047C CN B2005100282102 A CNB2005100282102 A CN B2005100282102A CN 200510028210 A CN200510028210 A CN 200510028210A CN 100342047 C CN100342047 C CN 100342047C
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China
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aln
particle
composite
tib
particles
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Expired - Fee Related
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CNB2005100282102A
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Chinese (zh)
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CN1718806A (en
Inventor
陈东
王浩伟
马乃恒
李险峰
易宏展
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Hubei Bluesky Aluminum-alloy Co., Ltd.
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Shanghai Jiaotong University
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Abstract

The present invention relates to reinforced aluminium based composite materials of in-situ hybrid particles, which belongs to the technical field of composite materials. The composite material comprises the components of 3 to 20 wt% of Si, 0.2 to 3 wt% of Mg, 0.1 to 25 wt% of TiB2 particle, 0.1 to 10 wt% of AIN particle, and Al at the rest, wherein the size of each ALN particle and the size of each TiB2 particle range from 50 to 300 nm; each ALN particle and each TiB2 particle form a hexagonal shape and a cuboid shape; the ALN particles and the TiB2 particles are uniformly distributed in a basal body and have clean interfaces. The present invention solves the problems of the existence of brittleness phases and nonuniform material distribution existing in the past reinforced aluminium based composite materials of hybrid particles, the ALN particles and the TiB2 particles are distributed in a basal body in the dispersion mode, and the reinforcement action is performed, so that the intensity and the modulus of the basal body are obviously enhanced.

Description

Aluminium based composite material enhanced by miscellaneous granules in situ
Technical field
What the present invention relates to is a kind of alumina-base material of technical field of composite materials, specifically, is a kind of aluminium based composite material enhanced by miscellaneous granules in situ.
Background technology
Traditional aluminum matrix composite is that enhanced granule is applied in the aluminum substrate, particle exists enhanced granule and the matrix wetting property is poor owing to adding in aluminum substrate, surface reaction is difficult to control, and defectives such as enhanced granule skewness have influenced the performance of aluminum matrix composite.Adopt simultaneously and add the particulate complicated process of preparation, cost is higher, is unfavorable for applying.Mix the deficiency that enhancing can improve single enhancing body, make various strongtheners of different nature additional mutually, generation mixes effect can improve the content that strengthens body simultaneously, further improves the performance of material.
Find that by prior art documents the Chinese patent publication number is: 1376805, open day be: 2002.10.30, denomination of invention is: a kind of high-strength in-situ Al-base composition, this matrix material are a kind of in-situ authigenic Al 2O 3, TiB 2Grain-mixing strengthened aluminium-base composite material.This matrix material generates in the product owing to the microcell uneven distribution of reacting powder causes and has fragility phase TiAl 3, influenced performance of composites.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, a kind of aluminium based composite material enhanced by miscellaneous granules in situ is provided, what make that it has solved that aluminium based composite material enhanced by miscellaneous granules in the past exists exists fragility mutually and distribution of material uneven defective, AlN and TiB 2Particle disperse in matrix distributes, and has played strengthening effect, and the intensity of matrix and modulus are improved significantly.
The present invention is achieved by the following technical solutions, and component of the present invention and mass percent thereof are: Si3~20%, Mg 0.2~3%, TiB 2Particle 0.1~25%, AlN particle 0.1~10%, surplus are Al.
Described AlN particle and TiB 2The particulate size is at 50~300nm.
Described AlN particle and TiB 2Particle shape is hexagon and rectangular parallelepiped, AlN particle and TiB 2Uniform particles is distributed in the matrix, and the interface is clean.
The present invention adds commercial-purity aluminium in crucible, make the aluminium ingot fusing, covers melt with JZF-03 type high temperature covering agent, is warming up to 850~1100 ℃; With KBF 4, K 2TiF 6Uniform mixing, oven dry adds mixing salt in the melt then, carries out mechanical stirring, uses silica tube to feed N simultaneously in melt 2After reaction finishes, take out to send out and answer slag, add Si, Mg, in melt, add the harmless aluminum refining agent of JZJ type and carry out the degasification refining, take off removing dross, leave standstill then; Be poured into then in the mould, obtain the original position hybrid reinforced aluminum-matrix composite material.
What the invention solves that aluminium based composite material enhanced by miscellaneous granules in the past exists exists fragility phase, the uneven defective of distribution of material.N 2Generate the AlN except participating in reaction, also play the effect of degasification refining and stirring.AlN and TiB 2Particle disperse in matrix distributes, and has played strengthening effect, and the intensity of matrix and modulus are improved significantly.The present invention has good mechanical performance and crystallized ability, can be widely used on requirement high strength, the complex-shaped part of high-modulus, also has a wide range of applications in fields such as aerospace, national defence, industry simultaneously.
Embodiment
Embodiment 1
Component of the present invention and mass percent thereof are: Si 3%, Mg 0.2%, TiB 0.1%2, AlN 0.1%, surplus is Al.
AlN and TiB in matrix material 2The particulate size is at 50~300nm, and particle shape is mainly hexagon and rectangular parallelepiped.Material is evenly fine and close, AlN and TiB 2The enhanced granule disperse is distributed in the matrix, AlN and TiB 2Clean with basal body interface, in conjunction with good.The mechanical property of the matrix material that process T6 handles: σ b=320MPa, σ 0.2=262MPa, δ=3.4%, E=74GPa.
Embodiment 2
Component of the present invention and mass percent thereof are: Si 10%, Mg 1.5%, TiB 212%, AlN 5%, and surplus is Al.
AlN and TiB 2The particulate size is at 50~300nm, and particle shape is mainly hexagon and rectangular parallelepiped.Material is evenly fine and close, AlN and TiB 2The enhanced granule disperse is distributed in the matrix, AlN and TiB 2Clean with basal body interface, in conjunction with good.Handle the mechanical property of back matrix material: σ through T6 b=347MPa, σ 0.2=290MPa, δ=1.9%, E=84GPa.
Embodiment 3
Component of the present invention and mass percent thereof are: Si 20%, Mg 3%, TiB 225%, AlN 10%, and surplus is Al.
AlN and TiB 2The particulate size is at 50~300nm, and particle shape is mainly hexagon and rectangular parallelepiped.Material is evenly fine and close, AlN and TiB 2The enhanced granule disperse is distributed in the matrix, AlN and TiB 2Clean with basal body interface, in conjunction with good.Handle the mechanical property of back matrix material through T6:: σ b=361MPa, σ 0.2=305MPa, δ=1.2%, E=92GPa.

Claims (5)

1. an aluminium based composite material enhanced by miscellaneous granules in situ is characterized in that, its component and mass percent thereof are: Si 3~20%, Mg 0.2~3%, TiB 2Particle 0.1~25%, AlN particle 0.1~10%, surplus are Al.
2. aluminium based composite material enhanced by miscellaneous granules in situ according to claim 1 is characterized in that, described AlN particulate is of a size of 50~300nm.
3. aluminium based composite material enhanced by miscellaneous granules in situ according to claim 1 is characterized in that, described TiB 2Particulate is of a size of 50~300nm.
4. aluminium based composite material enhanced by miscellaneous granules in situ according to claim 2 is characterized in that, described AlN particle, and it is shaped as hexagon and rectangular parallelepiped, and the AlN uniform particles is distributed in the matrix, and the interface is clean.
5. aluminium based composite material enhanced by miscellaneous granules in situ according to claim 3 is characterized in that, described TiB 2Particle, it is shaped as hexagon and rectangular parallelepiped, TiB 2Uniform particles is distributed in the matrix, and the interface is clean.
CNB2005100282102A 2005-07-28 2005-07-28 In situ mixed granula reinforced aluminium base composite material Expired - Fee Related CN100342047C (en)

Priority Applications (1)

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CNB2005100282102A CN100342047C (en) 2005-07-28 2005-07-28 In situ mixed granula reinforced aluminium base composite material

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CNB2005100282102A CN100342047C (en) 2005-07-28 2005-07-28 In situ mixed granula reinforced aluminium base composite material

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CN100342047C true CN100342047C (en) 2007-10-10

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Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103160716B (en) * 2011-12-19 2015-04-15 北京有色金属研究总院 Low-heat-expansion high-intensity alumina-silicon-aluminum (AlN-Si-Al) mixed composite material and preparation method thereof
CN107937762B (en) * 2017-10-20 2019-11-19 上海交通大学 In-situ self-generated TiB is prepared based on SLM2Enhance the method for composite material
CN108330347A (en) * 2018-02-05 2018-07-27 上海交通大学 The preparation method of aluminum matrix composite is prepared based on selective laser fusing
CN109680180A (en) * 2018-12-27 2019-04-26 吉林大学青岛汽车研究院 A method of strengthening Al-Zn-Mg-Cu aluminum alloy extrusion section bar
CN109439973B (en) * 2018-12-27 2020-08-14 吉林大学 Aluminum-silicon alloy based on multiphase mixed scale ceramic particles and preparation method thereof
CN109554572B (en) * 2018-12-27 2020-03-20 吉林大学 Multi-scale ceramic particle-mixed high-elasticity-modulus high-strength aluminum alloy and preparation method thereof
CN109439951B (en) * 2018-12-27 2020-07-03 吉林大学 Method for strengthening aluminum-silicon alloy based on multiphase mixed scale ceramic particle enhancer
CN109554570B (en) * 2018-12-27 2020-07-31 吉林大学青岛汽车研究院 Method for strengthening aluminum alloy by in-situ multiphase mixed scale ceramic in melt
CN109576526A (en) * 2018-12-27 2019-04-05 吉林大学 A kind of molten internal in-situ multiphase mixes scale ceramic reinforced Al-Zn-Mg-Cu aluminium alloy and preparation method thereof
CN111112874A (en) * 2019-12-31 2020-05-08 上海交通大学 ZrB-containing material2Aluminum alloy welding wire with AlN mixed particles and preparation method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1552930A (en) * 2003-12-19 2004-12-08 上海交通大学 TiB2/Ai high--damp composite material and preparing method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1552930A (en) * 2003-12-19 2004-12-08 上海交通大学 TiB2/Ai high--damp composite material and preparing method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Fabrication and formation mechanism of in situ nanometer-grade TiN and AlN paritcle-reinforced Al composite Cui Chunxiang and Wu Renjie,Chinese Science Bulletin,Vol.41 No.17 1996 *

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