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Extrusion deformation damping aluminum-magnesium alloy and preparation method

A magnesium alloy and damping technology, which is used in metal extrusion control equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of the same composition or invention and no patent disclosure, etc. The effect of low air permeability

Active Publication Date: 2009-12-16
CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

诸如中国专利局公开的CN200510037104.0、CN03126663.0、CN03119119.3、CN85100580、CN85100585、CN88105392.9、CN89102419.0、CN89109689.2、CN98121879.2、CN 200610030805.6、CN200610012077.6、CN200710099752.8号专利 etc.; but there is no patent publication with the same composition or invention object as the alloy of the present invention

Method used

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  • Extrusion deformation damping aluminum-magnesium alloy and preparation method
  • Extrusion deformation damping aluminum-magnesium alloy and preparation method
  • Extrusion deformation damping aluminum-magnesium alloy and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: With Al ingot and Mg ingot with a purity of 99.95%, Mg-La master alloy ingot as raw materials, Al ingot, Mg ingot and master alloy ingot are divided, degreased, dried and descaled to obtain block material, wherein In the Mg-La master alloy ingot containing rare earth lanthanum, La accounts for 13.5wt%, the total amount of impurity elements Fe, Ni, Cu and Si is less than 0.02wt%, and the aluminum balance; according to the general formula Al-10wt% Mg-0.8wt% La ratio for weighing and batching; the prepared charge is loaded into the graphite crucible, and when the furnace temperature of the resistance furnace reaches 790°C, put the graphite crucible with the charge into the resistance furnace to heat until all the charge is melted, and the crucible is put into Resistance furnace, then immediately pour KCl molten salt accounting for 10% of the weight of the metal charge on the surface of the metal charge in the crucible to cover the upper surface of the metal charg...

Embodiment 2

[0046] Example 2: The difference from Example 1 is that: 1. Weighing and batching are carried out according to the formula Al-10wt%Mg-0.3wt%La; 2. The preheating temperature of the extrusion blank is 370°C; 430 ° C; ④ extrusion ratio of 28.3. All the other steps and conditions are the same as in Example 1.

[0047] At room temperature and resonance frequencies of 20Hz, 40Hz, 60Hz, 80Hz and 100Hz, the damping coefficients (tanδ) of extrusion blanks are: 0.0001, 0.0067, 0.0059, 0.0049 and 0.0013, respectively.

[0048] At room temperature and resonance frequencies of 20Hz, 80Hz and 100Hz, the damping coefficients (tanδ) of extruded strips obtained directly from industrial extruders are: 0.0129, 0.0051 and 0.0044.

[0049] At room temperature, the main mechanical index of Al-10wt%Mg-0.3wt%La extrusion blank is: tensile strength (σ b ) is 180MPa, the elongation is 1.7%, and the Brinell hardness is 74HB.

[0050] At room temperature, Al-10wt%Mg-0.3wt%La is directly extruded by a...

Embodiment 3

[0051] Embodiment 3: The difference from Example 1 is: 1. Weighing and batching according to the formula Al-10wt%Mg-0.02wt%La proportioning; 2. The preheating temperature of the extrusion blank is 350 ° C; 420 ℃; ④ extrusion ratio of 18.1; ⑤ extruded industrial strip. All the other steps and conditions are the same as in Example 1.

[0052] At room temperature and resonance frequencies of 20Hz, 40Hz, 60Hz, 80Hz and 100Hz, the damping coefficients (tanδ) of Al-10wt%Mg-0.02wt%La extrusion blanks are: 0.0084, 0.0137, 0.0089, 0.0060 and 0.0051, respectively.

[0053] At room temperature and resonance frequency of 20Hz, 60Hz and 100Hz, the damping coefficients (tanδ) of Al-10wt%Mg-0.02wt%La extruded strips obtained by direct extrusion of industrial extruders are: 0.0012, 0.0002 and 0.0001.

[0054] At room temperature, the main mechanical index of Al-10wt%Mg-0.02wt%La extrusion blank is: tensile strength (σ b ) is 178MPa, the elongation is 2.2%, and the Brinell hardness is 64HB....

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Abstract

The invention relates to an extrusion deformation damping aluminum-magnesium alloy and a preparation method thereof. The composition of the alloy is as follows: Mg accounts for 10 wt%, La accounts for (0.02-0.80) wt%, and the total amount of impurity elements Fe, Ni, Cu and Si is less than 0.05 wt%, balance the total amount to 100wt% with Al. The invention solves the lack of extruded deformation damping aluminum-based alloys in the 0-100Hz frequency band and the difficulty in balance optimization, and solves the problems of insufficient damping alloys in this frequency band that can be selected in the industry, so as to meet the needs of optical systems and other reductions. The demand for light alloys such as vibration systems, especially high-magnesium aluminum alloys (Al-10Mg) with corrosion resistance and lightweight characteristics.

Description

technical field [0001] The invention relates to an extrusion deformation damping aluminum-magnesium alloy and a preparation method thereof. Background technique [0002] There is a strong market demand for aluminum-based damping alloys, and it is also one of the damping alloys that have been studied at home and abroad in the past 30 years. However, until now, the aluminum-based damping alloy as a structural-functional integrated material has not been fundamentally resolved, such as the scarcity of varieties, poor damping effect, and too narrow damping frequency band. In many cases, cast aluminum, aluminum alloys have to be used Alloy laminates or cast aluminum-cast iron pre-cast parts etc. alternatives. [0003] In 2004, the 52nd Institute of Ordnance Industry of China published the article "Research on the Performance of High Damping Aluminum Alloys". The article revealed that using its newly developed high-damping aluminum alloy instead of ZL104 alloy (a type of cast alu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22C1/00B21C31/00
Inventor 吴耀明杨晓鹏王立民毕广利王立东朱果逸张希艳孙伟邓志安
Owner CHANGZHOU INST OF ENERGY STORAGE MATERIALS &DEVICES
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