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A preparation method of 6x82 matrix composite material for automobile control arm

A technology for automobile control arms and composite materials, which is applied in the field of preparation of high-performance aluminum-based composite materials for automobile control arms, can solve the problems of sacrificing plasticity and toughness, polluting alloys by by-products, reducing production efficiency, etc., so as to improve strength and modulus Effect

Active Publication Date: 2017-05-03
JIANGSU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The nanocomposite strengthening agent and its nanocomposite strengthening and toughening technology of the present invention effectively solve the shortcomings of the current alloy composition optimization method that the material strength is not significantly improved, the modulus of the alloy cannot be improved, and the plastic toughness is sacrificed; When synthesizing reinforcements in situ in the pool, the infiltration of reactants is difficult, the by-products pollute the alloy, the equipment modification cost is high, and the production efficiency is reduced. On the basis of minimal modification of equipment, low-cost, pollution-free and high-efficiency large-scale production 6X82 Matrix Composites for Automobile Control Arms

Method used

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  • A preparation method of 6x82 matrix composite material for automobile control arm
  • A preparation method of 6x82 matrix composite material for automobile control arm
  • A preparation method of 6x82 matrix composite material for automobile control arm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] to N 2 Gas, K 2 ZrF 6 , K 2 TiF 6 and KBF 4 For reactant production (ZrB 2 +AlN+TiB 2 ) / 6X82Al composite material, wherein the nano-ZrB in the final composite material 2 Particles (0.15wt.%), nano-AlN whiskers (0.05~0.1wt.%) and submicron TiB 2 Particles (0.1wt.%), the rest is 6X82 alloy.

[0029] The 500kg 6X82 alloy melt that has been filtered by impurities, slag removed and degassed is introduced into the helical magnetic field-ultrasonic field combination device and the helical magnetic field is started (rotating magnetic field: current 50A, frequency 10Hz; traveling wave magnetic field: current 90A, frequency 15Hz ;Ultrasonic: power 1500W, frequency 20kHz, then industrial nitrogen, N 2 ≥99.8vol.%, the flow rate is 2L / min, through the high-purity graphite ventilation tube with air outlet at the bottom, it is passed into the melt, and the reactant powder K 2 ZrF 6 , K 2 TiF 6 and KBF 4 According to generate 3wt.% nanometer ZrB 2 Particles, 2wt.% submic...

Embodiment 2

[0032] Take NH 3 Gas, ZrO 2 、TiO 2 and B 2 o 3 For reactant production (ZrB 2 +AlN+Al 2 o 3 +TiB 2 ) / 6X82Al composite material, wherein the nano-ZrB in the final composite material 2 Particles 0.08wt.%, nano Al 2 o 3 0.248wt.% of particles, 0.05~0.1wt.% of nano AlN whiskers and submicron TiB 2 Particles 0.04wt.%, the rest is 6X82 alloy.

[0033] Enhancer reactant selection NH 3 , ZrO 2 、TiO 2 and B 2 o 3 , rotating magnetic field: current 50A, frequency 10Hz; traveling wave magnetic field: current 90A, frequency 15Hz; ultrasonic: power 1500W, frequency 20kHz; industrial ammonia, NH 3 ≥99.8vol.%, the flow rate is 3L / min, the reactant powder is ZrO 2 、TiO 2 and B 2 o 3 According to generate 2wt.% nanometer ZrB 2 Particles, 1wt.% submicron TiB 2 Particles, 2wt.% micron Al 3 When the amount of Ti particles is added, nano-Al is generated in the composite strengthener melt 2 o 3 The theoretical amount is 6.2wt.%, according to 4wt.% of the total amount of 6X8...

Embodiment 3

[0036] to N 2 Gas, K 2 ZrF, K 2 TiF 6 and B 2 o 3 For reactant production (ZrB 2 +AlN+Al 2 o 3 +TiB 2 ) / 6X82Al composite material, wherein the nano-ZrB in the final composite material 2 Particles 0.12wt.%, nano Al 2 o 3 0.183wt.% of particles, 0.05~0.1wt.% of nano AlN whiskers and submicron TiB 2 Particles 0.12wt.%, the rest is 6X82 alloy.

[0037] The gas reactant described in the preparation of reinforcement is N 2 , K 2 ZrF 6 、K 2 TiF 6 and B 2 o 3 , rotating magnetic field: current 50A, frequency 10Hz; traveling wave magnetic field: current 90A, frequency 15Hz; ultrasonic: power 1500W, frequency 20kHz, industrial N 2 The gas purity is not less than 99.8vol.%, and the flow rate is 1.5~3.5 L / min; the solid reactant is composed of K 2 ZrF 6 、K 2 TiF 6 and B 2 o 3 Composition, according to the formation of 4wt.% nano ZrB 2 Particles, 4wt.% submicron TiB 2 Particles, 5wt.% micron Al 3 When the amount of Ti particles is added, nano-Al is generated in ...

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Abstract

The invention relates to an aluminum-based composite material, in particular to a method for preparing a high-performance aluminum-based composite material for an automobile control arm. It is characterized by firstly combining the "helical magnetic field confinement control" and "high-energy ultrasonic dispersion" of the reinforcement reactant to prepare multi-element and multi-scale nanocomposite enhancers, and then directly adding an appropriate amount of nanocomposite enhancers to the purification process according to the design of performance components The final 6X82 alloy melt was homogenized, and finally the 6X82-based composite material rod was prepared on a large scale by optimizing the improved gas mold casting system. The invention has the characteristics of high reaction generation efficiency of multi-element and multi-scale nanometer reinforcements, uniform distribution of nanometer reinforcements in the composite material, and stable performance of the composite material, and is suitable for large-scale preparation of 6X82-based composite materials for automobile control arms.

Description

technical field [0001] The invention relates to an aluminum-based composite material, in particular to a method for preparing a high-performance aluminum-based composite material for an automobile control arm. Background technique [0002] With the requirements for energy saving, environmental protection, light weight and high mobility of automobiles, some iron and steel components such as automobile control arms are gradually replaced by aluminum alloys; out of consideration for strong plasticity and safety, most of the current international use The forged parts of 6082 aluminum alloy (Al-Mg-Si-Cu series) are used as light-duty automobile control arms. Although these materials have undergone gas mold casting, double extrusion and forging, the tensile strength Rm can reach 340MPa, and the yield strength Rp0.2 It can reach 310MPa, the elongation A can reach 12%, and the stiffness can reach 5.0KN / mm, but there will still be small deformation (insufficient strength and rigidity...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C21/08C22C1/02
CPCC22C1/02C22C21/02C22C21/08
Inventor 赵玉涛怯喜周陈刚李其荣浦俭英
Owner JIANGSU UNIV
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