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Ternary carbide/AlSi7Mg composite material and application thereof

A ternary carbide and composite material technology, applied in the field of aluminum-based composite materials, can solve the problems of high corrosion resistance, low thermal cracking tendency, general machinability, etc., achieve obvious strengthening effect, improve performance, and excellent comprehensive performance Effect

Pending Publication Date: 2022-07-29
江苏岐铭新材料科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

ZAlSi7Mg alloy code: ZL101 standard: GB / T1173-2013 Features and scope of application: can be strengthened by heat treatment, has natural aging ability, high strength, good plasticity, excellent casting performance, good fluidity, small linear shrinkage, heat treatment Low cracking tendency, high air tightness, high corrosion resistance, good weldability, but the machinability is average, and there is a slight tendency to produce pores and shrinkage cavities

Method used

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  • Ternary carbide/AlSi7Mg composite material and application thereof
  • Ternary carbide/AlSi7Mg composite material and application thereof
  • Ternary carbide/AlSi7Mg composite material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A ternary carbide / AlSi7Mg composite material, comprising the following components, in percent by weight:

[0030]

[0031] Among them, Si is 7.0wt%, Mg is 0.45%, and the balance is Al.

[0032] The preparation method is as follows: mix (Ti0.5, W0.25, Mo0.25) C powder with AlSi7Mg aluminum alloy powder (AlSi7Mg aluminum alloy powder accounts for 10% of the AlSi7Mg aluminum alloy), and press it into a green embryo under a pressure of 100 MPa; The mixed powder was sintered in vacuum at a temperature of 520 °C to obtain a ternary carbide / AlSi7Mg intermediate alloy; the AlSi7Mg alloy was added to a graphite crucible, heated to melting in a resistance furnace, and then modified Al-10Sr, refiner AlTiB and Ternary carbide / AlSi7Mg master alloy; at 760 ° C, the above alloy melt was kept for 30 minutes, stirred for 5 minutes, and the stirring speed was 40 r / min, and then held for 60 minutes; finally the above alloy melt was degassed and refined. The melt temperature When the t...

Embodiment 2

[0034] A ternary carbide / AlSi7Mg composite material, comprising the following components, in percent by weight:

[0035]

[0036] Among them, Si is 7.0wt%, Mg is 0.45%, and the balance is Al.

[0037] The preparation method is as follows: mix (Ti0.5, W0.25, Mo0.25) C powder with AlSi7Mg aluminum alloy powder (AlSi7Mg aluminum alloy powder accounts for 50% of the AlSi7Mg aluminum alloy), and press it into a green embryo under a pressure of 120 MPa; The mixed powder was sintered in vacuum at a temperature of 530 °C to obtain a ternary carbide / AlSi7Mg intermediate alloy; the AlSi7Mg alloy was added to a graphite crucible, heated to melting in a resistance furnace, and then modified Al-10Sr, refiner AlTiB and Ternary carbide / AlSi7Mg master alloy; at 710 ° C, the above alloy melt was kept for 20 minutes, stirred for 3 minutes, and the stirring speed was 40 r / min, and then held for 60 minutes; finally the above alloy melt was degassed and refined. The melt temperature When the t...

Embodiment 3

[0039] A ternary carbide / AlSi7Mg composite material, comprising the following components, in percent by weight:

[0040]

[0041]

[0042] Among them, Si is 7.0wt%, Mg is 0.45%, and the balance is Al.

[0043] The preparation method is as follows: mix (Ti0.5, W0.25, Zr0.25) C powder with AlSi7Mg aluminum alloy powder (AlSi7Mg aluminum alloy powder accounts for 15% of the AlSi7Mg aluminum alloy), and press it into a green embryo under a pressure of 120 MPa; The mixed powder was sintered in vacuum at a temperature of 540 °C to obtain a ternary carbide / AlSi7Mg master alloy; the AlSi7Mg alloy was added to a graphite crucible, heated to melting in a resistance furnace, and then modified Al-10Sr, refiner AlTiB and Ternary carbide / AlSi7Mg master alloy; at 750 ℃, the above alloy melt was kept for 30 minutes, stirred for 5 minutes, the stirring speed was 40 r / min, and then held for 60 minutes; finally the above alloy melt was degassed and refined after the melt temperature When ...

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Abstract

The invention provides a ternary carbide / AlSi7Mg composite material which is characterized by comprising the following components in percentage by weight: 0.1-4.0 wt% of ternary carbide, 0.1-2.0 wt% of AlSi7Mg, 0.1-2.0 wt% of AlSi7Mg and the balance of Al. 0.1 wt%-1 wt% of an alterant; 0.1 wt% to 1 wt% of a refining agent; and the balance of AlSi7Mg aluminum alloy. The ternary carbide / AlSi7Mg composite material provided by the invention takes the ternary carbide as a reinforcing phase, and the prepared composite material is stable in performance and controllable in process, can be used as a hub material, and can realize industrialization.

Description

technical field [0001] The invention relates to the field of aluminum-based composite materials, in particular to a ternary carbide / AlSi7Mg composite material and uses thereof. Background technique [0002] Particle reinforced aluminum matrix composite material is a composite of aluminum matrix material with good ductility and machinability and ceramic particles with high melting point, good heat resistance, corrosion resistance and wear resistance, which can significantly improve the material properties. Particle reinforced aluminum matrix composites have the advantages of light weight, high strength and hardness, low thermal expansion coefficient, high damping performance, high temperature resistance, wear resistance, and good thermal conductivity, etc., and their manufacturing process is simple, flexible and diverse, and traditional Metallurgical process equipment for secondary processing has a significant low-cost advantage, so it is widely used in aviation, aerospace, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C32/00C22C21/04C22C1/03C22C1/05C22F1/043
CPCC22C32/0052C22C21/04C22C1/03C22C1/026C22C1/05C22F1/043
Inventor 刘爱军刘宁艾桓玉
Owner 江苏岐铭新材料科技发展有限公司
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