Method for reducing thermal cracking tendency of aluminum-based composite material by adding rare-earth Ce elements

A technology of aluminum-based composite materials and thermal cracking tendency, which is applied in the field of adding rare earth Ce elements to reduce the thermal cracking tendency of aluminum-based composite materials, can solve the problems of economic loss of material failure, reduction of material service life, and loss of people's property, etc., to achieve The effect of reducing the production cost, reducing the tendency of thermal cracking, and increasing the service life

Inactive Publication Date: 2019-04-09
LANZHOU UNIVERSITY OF TECHNOLOGY
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AI Technical Summary

Problems solved by technology

However, during the molding process of this material, such as casting and welding, when the material is solidified, defects such as hot cracks, segregation, and pores are prone to occur.
Among them, the thermal cracking tendency has a great influence on the performance of the material, which reduces the service life of the material, and sometimes even causes the material to fail, causing great economic losses and people's property losses. Therefore, it is necessary to study how to reduce the thermal cracking tendency of the material.

Method used

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  • Method for reducing thermal cracking tendency of aluminum-based composite material by adding rare-earth Ce elements
  • Method for reducing thermal cracking tendency of aluminum-based composite material by adding rare-earth Ce elements
  • Method for reducing thermal cracking tendency of aluminum-based composite material by adding rare-earth Ce elements

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Embodiment

[0026] In this example, two composite material hot cracking tendency test experiments were carried out, namely, the hot cracking tendency test experiment without adding rare earth Ce element to the composite material and the hot cracking tendency test experiment adding 0.2% rare earth Ce element. Two experiments are compared to better illustrate the effectiveness of the inventive method. The following main content is the detailed process of the hot cracking tendency test experiment of adding 0.2% rare earth Ce element to the composite material:

[0027] Step 1. First weigh a certain mass of ZL205A alloy, and then calculate 5% of the mass of ZL205A alloy as TiB 2 the mass of the pellets;

[0028] Step 2, calculate and weigh the quality of Potassium Fluoborate and Potassium Fluotitanate according to the following total chemical reaction equation, and the total chemical equation is as follows:

[0029] 6KBF 4 +3K 2 TiF 6 +10Al=9KAlF 4 +K 3 AlF 6 +3TiB 2

[0030] Relativ...

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Abstract

The invention discloses a method for reducing the thermal cracking tendency of an aluminum-based composite material by adding rare earth Ce elements. The ZL205A alloy is used as a matrix material, thepreparation method comprises the following steps of firstly, preparing the micro-nano particle TiB2 reinforced ZL205A composite material by utilizing an in-situ self-generated melt technology, then adding 0.2% of rare-earth Ce elements into the composite material melt containing the TiB2 particles, so that the thermal cracking tendency of the aluminum-based composite material is reduced. According to the aluminum-based composite material by adding rare earth Ce elements, the thermal cracking tendency of the 5TiB2 composite material can be reduced under the condition that the strength and thetoughness are not reduced, grains of the series of composite materials are refined, the performance of the material is improved, and the service life of the material is prolonged.

Description

technical field [0001] The invention relates to the field of research on thermal cracking tendency of high-strength and tough aluminum-based composite materials, in particular to a method for reducing the thermal-cracking tendency of aluminum-based composite materials by adding rare earth Ce elements. Background technique [0002] Aluminum matrix composites have excellent properties such as high strength, high toughness, and corrosion resistance. Due to the low density of aluminum matrix composites, it is light in weight and high in strength, and is suitable for structural parts. Therefore, it is widely used in aerospace, automobiles, ships and other fields at this stage, such as the fuselage of large aircraft, aircraft landing gear, etc., all use ZL205A series aluminum matrix composite materials. However, during the molding process of this material, such as casting and welding, when the material is solidified, defects such as hot cracks, segregation, and pores are prone to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C32/00C22C1/02C22C1/10C22C1/06
CPCC22C1/06C22C1/1036C22C21/00C22C32/0073C22C1/1052
Inventor 张晓波朱鹏张潇冯佰刚万雄斌张全鑫任军强陈东
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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