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Nano titanium carbide particle reinforced ADC12 aluminum matrix composite and preparation method thereof

An aluminum-based composite material and nano-titanium carbide technology, which is applied in the field of nano-titanium carbide particles reinforced ADC12 aluminum-based composite material, can solve problems such as reducing plasticity, and achieve the effects of improving strength, process stability and environmental damage.

Inactive Publication Date: 2018-02-16
常熟市恒泰精密金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the reinforced particle size in the current particle-reinforced metal-aluminum matrix composites is mainly micron (such as CN103031462A), the plasticity will be reduced while the strength of the composite is increased.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A) prepare the mixed powder of nano-titanium carbide and aluminum, the particle size is 80-100 nanometer titanium carbide powder and aluminum powder are dropped into ball mill ball mill by weight ratio 2.5:7, the ball mill speed control of ball mill is 100r / min, ball mill time is 18h, obtain the mixed powder of nano-titanium carbide and aluminum;

[0022] B) Melting, first put the aluminum ingot into (put into) the smelting furnace and heat it to 750°C and keep the temperature constant at 750°C, then add the aluminum-silicon master alloy into the smelting furnace, that is, the weight of the added silicon element accounts for 20% of the total weight % Al-20Si alloy, when the aluminum-silicon master alloy is melted and the temperature rises to 750°C, let it stand for 12 minutes, then add copper to the melting furnace, and when the copper is completely melted, let it rest for 16 minutes and raise the temperature to 800°C , and finally add the mixed powder of nano-titanium ...

Embodiment 2

[0025] A) prepare the mixed powder of nano-titanium carbide and aluminum, be that 60-80 nanometer titanium carbide powder and aluminum powder are dropped into ball mill ball mill by weight ratio with particle size, the ball mill speed control of ball mill is 200r / min, and the ball mill time is 200r / min. 24h, obtain the mixed powder of nano-titanium carbide and aluminum;

[0026] B) Melting, first put the aluminum ingot into (put into) the smelting furnace and heat it to 800°C and keep the temperature constant at 800°C, then add the aluminum-silicon master alloy into the smelting furnace, that is, the weight of the added silicon element accounts for 20% of the total weight % Al-20Si alloy, when the aluminum-silicon master alloy is melted and the temperature rises to 800°C, stand still for 8 minutes, then add copper to the melting furnace, and when the copper is completely melted, stand still for 12 minutes and raise the temperature to 850°C , and finally add the mixed powder of...

Embodiment 3

[0029] A) prepare the mixed powder of nano-titanium carbide and aluminum, the particle size is 40-60 nano-titanium carbide powder and aluminum powder are dropped into ball mill ball mill by weight ratio 3.5: 6, the ball mill speed control of ball mill is 150r / min, ball mill time is 12h, obtain the mixed powder of nano-titanium carbide and aluminum;

[0030] B) Melting, first put the aluminum ingot into (put into) the smelting furnace and heat it to 780°C and keep the temperature constant at 780°C, then add the aluminum-silicon master alloy into the smelting furnace, that is, the weight of the added silicon element accounts for 20% of the total weight % Al-20Si alloy, when the aluminum-silicon master alloy is melted and the temperature rises to 800°C, let it stand for 10 minutes, then add copper to the melting furnace, and when the copper is completely melted, let it rest for 18 minutes and raise the temperature to 825°C , and finally add the mixed powder of nano-titanium carbi...

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Abstract

The invention discloses a nano titanium carbide particle reinforced ADC12 aluminum matrix composite and a preparation method thereof. The preparation method comprises the steps that nano titanium carbide powder and aluminum powder are put into a ball mill to be subjected to ball milling, and mixed powder composed of the nano titanium carbide and the aluminum is obtained; an aluminum ingot is put into a smelting furnace, aluminum-silicon intermediate alloy is added into the smelting furnace, then, copper is added into the smelting furnace, finally, the mixed powder composed of the nano titaniumcarbide and the aluminum is added into the smelting furnace, a refining agent is added for deslagging and degassing, a molten liquid sample is analyzed and adjusted, chemical elements comprise 9.6-12.0% of silicon, 1.5-3.5% of the copper, 1.0-3.0% of the nano titanium carbide and the balance aluminum, drossing and casting molding are conducted, and a blank needing to be subjected to post-treatment is obtained; and the blank needing to be subjected to post-treatment is put into a heat treatment furnace to be heated and subjected to heat preservation, and then is taken out of the heat treatmentfurnace to be subjected to water quenching, after water quenching, heating and heat preservation are conducted again, and a finished product is obtained. The microstructure of an ADC12 aluminum matrix is perfected, and the mechanical property is improved. The technology is simple, convenient and stable, the preparation cost is low, and environmental friendliness is achieved.

Description

technical field [0001] The invention belongs to the technical field of metal-matrix composite materials and their preparation, and in particular relates to a nano-titanium carbide particle-reinforced ADC12 aluminum-matrix composite material, and also relates to a preparation method thereof. Background technique [0002] The aforementioned ADC12 is a Japanese brand, also known as No. 12 aluminum material, which is equivalent to the domestic alloy code YL113 (alloy brand is YZ Alsi11Cu3), and the implementation standard is GB / T15115-2009. The American alloy grade is 383, and the executive standard is: ASTMB85-03 (Standard Specification for Aluminum-Alloy Die Castings). [0003] Particle-reinforced aluminum matrix composites have the advantages of high specific strength, high specific modulus (high elastic modulus), small thermal expansion coefficient, and good wear resistance. They have been widely used as lightweight structural materials in aerospace, transportation, etc. fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22C1/03C22C1/10C22F1/043
CPCC22C21/02C22C1/1036C22F1/043
Inventor 周波徐卫国
Owner 常熟市恒泰精密金属制品有限公司
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