Preparing method of TiB2 particle reinforced foamed aluminium/aluminium alloy

A technology of particle reinforcement and aluminum alloy, which is applied in the field of porous materials, can solve the problem of low strength of foamed aluminum, and achieve the effects of simple preparation process, controllable pore structure and high strength

Inactive Publication Date: 2015-01-07
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
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Problems solved by technology

[0006] The present invention provides a kind of TiB 2 A method for preparing particle-reinforced foamed aluminum / aluminum alloys by in-situ generation of TiB in aluminum / aluminum alloy melts 2 particles, and then add blowing agent TiH 2 The method of carrying out foaming prepares TiB 2 Particle reinforced aluminum foam / alloy, of which TiB 2 The particles have the dual functions of increasing the viscosity of the aluminum / aluminum alloy melt and strengthening the particles. It has the characteristics of high strength of foamed aluminum / aluminum alloy, controllable pore structure and simple preparation process, which can realize industrial production

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  • Preparing method of TiB2 particle reinforced foamed aluminium/aluminium alloy

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Experimental program
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Effect test

Embodiment approach 1

[0029] Implementation mode one: if figure 1 As shown, the TiB of this embodiment 2 The preparation method of particle reinforced foamed aluminum / aluminum alloy is:

[0030] (1) Preparation of aluminum / aluminum alloy melt: using industrial pure aluminum as raw material, heat 1200 grams of industrial pure aluminum to 850°C to melt and hold it for 20 minutes to obtain industrial pure aluminum melt;

[0031] (2) Preparation of reaction raw material billet: Potassium fluoroborate and potassium fluorotitanate are used as raw materials, and the molar ratio of potassium fluoroborate to potassium fluorotitanate is 2:1 for batching. After batching, it is mixed in the mixer Homogenize for 1 hour, and press the homogeneously mixed reaction raw material with a pressure of 100 MPa to obtain a reaction raw material billet, which is preheated to 300°C for use;

[0032] (3) Preparation of composite melt: 480 grams of reaction raw material billet obtained in step (2) is added to the industria...

Embodiment approach 2

[0035] Implementation mode two: if figure 1 As shown, the TiB of this embodiment 2The preparation method of particle reinforced foamed aluminum / aluminum alloy is:

[0036] (1) Preparation of aluminum / aluminum alloy melt: using Al-Si12 alloy as raw material, heating 1600 grams of Al-Si12 alloy to 950°C to melt and keep it for 40 minutes to obtain Al-Si12 alloy melt;

[0037] (2) Preparation of reaction raw material billet: Potassium fluoroborate and potassium fluorotitanate are used as raw materials, and the molar ratio of potassium fluoroborate to potassium fluorotitanate is 2:1 for batching. After batching, it is mixed in the mixer Homogenized for 3 hours, and the homogeneously mixed reaction raw materials were pressed with a pressure of 200 MPa to obtain a reaction raw material billet, which was preheated to 500°C for use;

[0038] (3) Preparation of composite melt: Add 1400 grams of the reaction raw material blank obtained in step (2) to the Al-Si12 alloy melt obtained in...

Embodiment approach 3

[0041] Implementation mode three: if figure 1 As shown, the TiB of this embodiment 2 The preparation method of particle reinforced foamed aluminum / aluminum alloy is:

[0042] (1) Preparation of aluminum / aluminum alloy melt: using ZL111 alloy as raw material, heating 1300 grams of ZL111 alloy to 900°C to melt and keep it warm for 30 minutes to obtain ZL111 alloy melt;

[0043] (2) Preparation of reaction raw material billet: Potassium fluoroborate and potassium fluorotitanate are used as raw materials, and the molar ratio of potassium fluoroborate to potassium fluorotitanate is 2:1 for batching. After batching, it is mixed in the mixer Homogenized for 2 hours, and the homogeneously mixed reaction raw materials were pressed with a pressure of 150 MPa to obtain a reaction raw material billet, which was preheated to 400°C for use;

[0044] (3) Preparation of composite melt: Add 700 grams of the reaction raw material billet obtained in step (2) to the ZL111 alloy melt obtained in...

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Abstract

The invention relates to a preparing method of TiB2 particle reinforced foamed aluminium/aluminium alloy, and belongs to the technical field of porous materials. The method includes: melting aluminium/aluminium alloy by heating, adding potassium fluoborate and potassium fluotitanate, performing an in-situ reaction to generate TiB2 particles, adding TiH2, foaming, allowing the melt and foam to be cooled and cured to obtain the TiB2 particle reinforced foamed aluminium/aluminium alloy. The TiB2 particles have double functions, namely a function of tackifying an aluminium/aluminium alloy melt and a function of particle reinforcing. The method has characteristics of high strength of the foamed aluminium/aluminium alloy, controllable pore structures, and simple preparation process, and can achieve industrial production.

Description

technical field [0001] The present invention relates to a kind of TiB 2 The invention discloses a method for preparing particle-reinforced foamed aluminum / aluminum alloy, which belongs to the technical field of porous materials. Background technique [0002] Aluminum / aluminum alloy foam has the characteristics of low density, high specific strength, energy absorption, sound absorption and vibration reduction, electromagnetic shielding, low thermal conductivity, etc. It has a broad application market in structural materials, noise control, architectural decoration, heat insulation and other fields. [0003] The currently known preparation methods of foamed aluminum / aluminum alloys are mainly melt foaming method, powder metallurgy foaming method and gas injection foaming method. [0004] The melt foaming method starts from the melt route, and disperses the blowing agent TiH in the aluminum / aluminum alloy melt enhanced by Ca (1-3%) by stirring 2 , followed by foaming. The po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08C22C21/00
Inventor 左孝青罗晓旭王应武陆建生刘荣佩杨滨陈冬华
Owner KUNMING UNIV OF SCI & TECH
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