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Method for preparing metal layered composite material through high-energy pulse current assisted ultrasonic consolidation

A technology of ultrasonic consolidation and composite materials, applied in non-electric welding equipment, metal processing equipment, welding equipment, etc., can solve the problems of excessive influence of processing technology, long preheating and cooling time, local stress residual, etc., to achieve consolidation Good quality, excellent interface mechanical properties, sufficient effect of interface metallurgical bonding

Inactive Publication Date: 2020-04-17
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the shortcomings of long preheating and cooling time, complex processing procedures, excessive influence of environmental conditions on processing technology, and local stress residual caused by temperature changes when using traditional substrate heating methods to consolidate metal layered composite materials. Provides a method for preparing metal layered composites through high-energy pulsed current-assisted ultrasonic consolidation

Method used

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  • Method for preparing metal layered composite material through high-energy pulse current assisted ultrasonic consolidation
  • Method for preparing metal layered composite material through high-energy pulse current assisted ultrasonic consolidation
  • Method for preparing metal layered composite material through high-energy pulse current assisted ultrasonic consolidation

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preparation example Construction

[0032] The present invention provides a novel preparation method capable of rapidly preparing layered composite materials at room temperature, so as to solve the problem of long preheating and cooling times, complicated processing procedures, and poor environmental conditions when using traditional substrate heating methods to ultrasonically consolidate metal layered composite materials. The processing technology has too much influence, and temperature changes cause local stress residuals.

[0033] In order to improve the processing capability of the ultrasonic consolidation manufacturing technology and broaden its scope of application, so that it can be applied to the consolidation and forming of metal foils with higher strength and thickness, the present invention proposes the use of pulse Current-assisted synchronously coupled ultrasonic consolidation manufacturing new technology for preparing metal layered composites. That is, using the electroplastic effect of the pulse curr...

Embodiment 1

[0041] Take Ti foil and Al foil with a thickness of 0.2mm, use alcohol to remove dirt and grease on the surface, and then dry for later use. Take the "Ti foil-Al foil" combination as a consolidation unit, in which the Ti foil is on the top and the Al foil is on the bottom. A total of 5 consolidation units are prepared.

[0042] In the preparation of pulse current-assisted ultrasonic consolidation of titanium-aluminum laminated composite materials, the specific process parameters are: ultrasonic amplitude of 40μm, static pressure of 2000N, consolidation speed of 25mm / s, pulse current density of 1.35A / mm2, pulse current frequency 150Hz, see attached diagram for the prepared device figure 1 . The above parameters are used to complete the consolidation of the first pass of the foil unit, and the process parameters are repeated to prepare a titanium-aluminum layered composite with a total of five consolidation units.

[0043] The cross-sectional micrograph of the titanium-aluminum laye...

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Abstract

The invention provides a method for preparing a metal layered composite material through high-energy pulse current assisted ultrasonic consolidation, and the method comprises the following steps: preparing one or more metal foils, cleaning oil stains on the surface, and drying the cleaned foils for later use; connecting a pulse current power supply with ultrasonic consolidation equipment to ensurethat a strip / substrate between the positive electrode and the negative electrode of the pulse current is a unique path; by adopting a synchronous coupling mode, applying a pulsed electric field withcurrent density and frequency in the ultrasonic consolidation process, and finishing single-pass metal foil consolidation; and after the step 3 is completed, repeating the process of the step 3 as required to realize layer-by-layer accumulation and solidification of the metal foils, and finally, preparing the metal layered composite materials with different thicknesses / layers and obtaining the metal layered composite material prepared by high-energy pulse current assisted ultrasonic solidification. The electroplastic effect of the pulse current utilized by the method is essentially different from that of a traditional method for improving the plasticity of the material through the heat effect, and the plastic deformation capacity of the material can be instantaneously improved under the condition of extremely small temperature rise.

Description

Technical field [0001] The invention relates to a method for a metal layered composite material, in particular to a method for preparing a metal layered composite material by high-energy pulse current assisted ultrasonic consolidation, and belongs to the field of layered composite material preparation. Background technique [0002] Metal layered composite materials and structures (including: homogeneous and dissimilar metal layered composite materials, metal foam (honeycomb) sandwich panels, layered electrode composite materials, etc.) have excellent mechanical and functional properties, and are used in aerospace, Ships, ground weapons, rail transit, automobile manufacturing, power electronics and other fields have broad application prospects. In order to overcome the shortcomings of traditional forming and manufacturing processes of metal layered composite materials (such as explosive forming, rolling compounding, brazing, etc.), in recent years, the United States has developed ...

Claims

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Application Information

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IPC IPC(8): B23K20/10B23K20/24B23K20/26B23K28/02
CPCB23K20/10B23K20/103B23K20/24B23K20/26B23K28/02
Inventor 姜风春李鹏王振强果春焕赵成志
Owner HARBIN ENG UNIV
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