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Method for preparing Mg-Al-Zn-Mn-Cu multi-component alloy through combination of three-dimensional ultrasound and sound field detection

A multi-element alloy and three-dimensional ultrasonic technology, which is applied in the direction of manufacturing tools, casting equipment, metal processing equipment, etc., can solve the problem of insufficient ultrasonic range

Active Publication Date: 2022-02-18
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Therefore, how to make up for the defect of insufficient ultrasonic range, and then improve the effect of ultrasonic treatment and regulate the solidification structure and properties of magnesium alloys has become a technical problem to be solved urgently in this field.

Method used

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  • Method for preparing Mg-Al-Zn-Mn-Cu multi-component alloy through combination of three-dimensional ultrasound and sound field detection
  • Method for preparing Mg-Al-Zn-Mn-Cu multi-component alloy through combination of three-dimensional ultrasound and sound field detection
  • Method for preparing Mg-Al-Zn-Mn-Cu multi-component alloy through combination of three-dimensional ultrasound and sound field detection

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preparation example Construction

[0092] The preparation method of the present invention is simple, and can control the solidification structure and application performance of the alloy. The quality of the alloy elements in the obtained multi-element magnesium alloy is accurate and evenly distributed, and its tensile strength, tensile plasticity, hardness and damping performance are all significantly high. Castings prepared under normal casting conditions.

[0093] The present invention provides a device for preparing the Mg-Al-Zn-Mn-Cu multi-element alloy described in the above technical solution, the device comprising three ultrasonic vibration components.

[0094] In the present invention, the ultrasonic fields generated by the three ultrasonic vibration components are preferably three-dimensionally orthogonal to each other.

[0095] Such as figure 1 As shown, in one embodiment of the present invention, the device includes a push rod 1, a mold 2, an X-axis ultrasonic vibration assembly 3, a Y-axis ultrason...

Embodiment 1

[0127] Such as figure 1 As shown, the device provided by the present invention includes a reverse thrust rod 1, a casting mold 2, an X-axis ultrasonic vibration assembly 3, a Y-axis ultrasonic vibration assembly 4, a Z-axis ultrasonic vibration assembly 5, a waveguide rod 6, a thermocouple 7, and an upper graphite crucible 8 , lower graphite crucible 9, quartz gas shield 10, upper high-frequency melting device 11, lower high-frequency melting device 12, upper infrared temperature measuring device 13, lower infrared temperature measuring device 14, upper plugging device 15, lower plugging device 16. Flow monitoring device 17, preheating device 18, sound field and temperature sensor and signal acquisition circuit 19, computer 20, acquisition card 21, transducer power supply 22;

[0128] The outer wall of the casting mold 2 is close to the reverse push rod 1, and the X-axis ultrasonic vibration assembly 3 and the Y-axis ultrasonic vibration assembly 4 are pressed against two mutu...

Embodiment 2

[0137] A method for preparing a Mg-Al-Zn-Mn-Cu multi-element alloy by combining three-dimensional ultrasound with sound field detection, comprising the following steps:

[0138] (1) After mixing the raw materials of the master alloy, carry out the first smelting to obtain the first melt; in terms of 100wt.% of the master alloy, the raw materials of the master alloy are: 20wt.% Zn, 10wt.% Mn, 10wt.% of Cu and the balance of Al; the temperature of the first melt is 1300 ° C; the mass percentage of the multi-element magnesium alloy is 100wt.%, and the mass of the master alloy is 5.0wt.%.

[0139] After mixing 5.5wt.% Al and the remainder of Mg, a second smelting is carried out to obtain a second melt; the temperature of the second melt is 700°C;

[0140] The first melt is mixed with the second melt for the third smelting to obtain an alloy melt; the temperature of the third smelting is 720°C, and the holding time of the third smelting is 3min;

[0141] The first smelting, the se...

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Abstract

The invention provides a method for preparing an Mg-Al-Zn-Mn-Cu multi-component alloy through combination of three-dimensional ultrasound and sound field detection, and belongs to the technical field of advanced material preparation and processing. According to the invention, a uniform and high-strength ultrasonic field is obtained in the melt by adopting a three-dimensional mutually orthogonal ultrasonic field, so that a larger cavitation volume is realized, the defects of fast ultrasonic energy attenuation and small action range of a single-beam ultrasonic wave are overcome, and the limitation of deformation and dissolution of an amplitude-change pole caused by high-temperature erosion is also overcome; through real-time monitoring of the high-temperature sound field detection system, measurement and regulation of reaction ultrasonic energy such as sound pressure and cavitation sound intensity are achieved, and regulation of alloy solidification structures and application performance is achieved. The result of the embodiment shows that the alpha-Mg structure in the alloy prepared through the method is remarkably refined, meanwhile, the beta-Mg17Al12 phase is changed into dispersed and mutually-connected net distribution, the yield strength is 113 MPa, the plastic ductility is 5.3%, and the breaking strength is 206 MPa.

Description

technical field [0001] The invention relates to the technical field of advanced material preparation and processing, in particular to a method for preparing a Mg-Al-Zn-Mn-Cu multi-element alloy by combining three-dimensional ultrasound with sound field detection. Background technique [0002] Magnesium alloy is the lightest metal structure material for industrial application. It has a series of advantages such as light specific gravity, high specific strength and specific stiffness, excellent damping, thermal conductivity, castability, strong electromagnetic shielding ability, abundant resources, and easy recycling. Therefore, in The fields such as the automobile industry, the communication electronics industry and the aerospace industry are being increasingly widely used. Among them, Mg-Al alloys are the most widely used due to their good corrosion resistance and casting performance and low cost. However, the grains of the α-Mg phase in the as-cast alloy obtained by the tra...

Claims

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Application Information

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IPC IPC(8): C22C1/03C22C23/02B22D27/08B22D46/00C22F3/02B22D7/00B22D7/12
CPCC22C1/03C22C23/02B22D27/08B22D46/00C22F3/02B22D7/005B22D7/12
Inventor 王建元翟薇胡亚杰魏炳波
Owner NORTHWESTERN POLYTECHNICAL UNIV
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