Preparation method for amorphous alloy/pure copper layered composite material

A technology of layered composite materials and amorphous alloys, applied in the field of materials, can solve problems affecting the overall mechanical properties of composite materials, crystallization of amorphous alloys at the interface, and complex processes

Inactive Publication Date: 2017-07-11
XIJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the spraying process can make the amorphous and metal tightly combined (at the atomic level), as the thickness of the coating increases, the bonding between the metal and the metal layer in the coating is relatively loose (compared with the interior of the alloy). Under the action of load, the coating is easy to peel off, reducing its overall performance, so it cannot be used as a force-bearing structural member
In recent years, scholars have begun to use the characteristics of the supercooled liquid region of amorphous alloys to successfully obtain amorphous alloy / metal layered composites with good mechanical properties through co-pressing, semi-solid forging, and explosive welding. However, explosive welding and The process of semi-solid forging method is complicated, and it is easy to induce the crystallization of the amorphous alloy at the interface during the processing and forming process, which ultimately affects the overall mechanical properties of the composite material

Method used

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  • Preparation method for amorphous alloy/pure copper layered composite material
  • Preparation method for amorphous alloy/pure copper layered composite material
  • Preparation method for amorphous alloy/pure copper layered composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The preparation method of amorphous alloy / pure copper layered composite material, its step comprises:

[0019] Step 1: Zr 41.2 Ti 13.8 Ni 10 Cu 12.5 be 22.5 Amorphous alloy adopts high-vacuum non-consumable arc melting furnace to melt master alloy, spray cast into Zirconium-based bulk amorphous alloy rods; Zr-based bulk amorphous alloy rods and copper The sample was smoothed with 1200# sandpaper, and the upper and lower surfaces of the amorphous sample and the copper sample were guaranteed to be parallel to each other; then it was placed in acetone and alcohol for 5 minutes of ultrasonic vibration cleaning, in order to reduce the influence of oxygen atoms on the interface, after drying Immediately put into the vacuum autoclave;

[0020] Step 2: Pump high vacuum to 10 -5 Pa, and then heated to the hot pressing temperature of 370°C at a heating rate of 40k / min, with a deformation rate of 10 -3 the s -1 down, will Zirconium-based bulk amorphous alloy rods ...

Embodiment 2

[0022] The preparation method of amorphous alloy / pure copper layered composite material, its step comprises:

[0023] Step 1: Zr 41.2 Ti 13.8 Ni 10 Cu 12.5 be 22.5 Amorphous alloy adopts high-vacuum non-consumable arc melting furnace to melt master alloy, spray cast into Zirconium-based bulk amorphous alloy rods; Zr-based bulk amorphous alloy rods and copper The sample was smoothed with 1200# sandpaper, and the upper and lower surfaces of the amorphous sample and the copper sample were guaranteed to be parallel to each other; then it was placed in acetone and alcohol for 5 minutes of ultrasonic vibration cleaning, in order to reduce the influence of oxygen atoms on the interface, after drying Immediately put into the vacuum autoclave;

[0024] Step 2: Pump high vacuum to 10 -4 Pa, and then heated to the hot pressing temperature of 390°C at a heating rate of 40k / min, with a deformation rate of 10-3s-1, the Zirconium-based bulk amorphous alloy rods were diffusion-...

Embodiment 3

[0026] The preparation method of amorphous alloy / pure copper layered composite material, its step comprises:

[0027] Step 1: Zr 41.2 Ti 13.8 Ni 10 Cu 12.5 be 22.5 Amorphous alloy adopts high-vacuum non-consumable arc melting furnace to melt master alloy, spray cast into Zirconium-based bulk amorphous alloy rods; Zr-based bulk amorphous alloy rods and copper The sample was smoothed with 1200# sandpaper, and the upper and lower surfaces of the amorphous sample and the copper sample were guaranteed to be parallel to each other; then it was placed in acetone and alcohol for 5 minutes of ultrasonic vibration cleaning, in order to reduce the influence of oxygen atoms on the interface, after drying Immediately put into the vacuum autoclave;

[0028] Step 2: Pump high vacuum to 10 -3 Pa, and then heated to the hot pressing temperature of 400°C at a heating rate of 40k / min, with a deformation rate of 10 -3 the s -1 down, will Zirconium-based bulk amorphous alloy rods ...

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Abstract

The invention discloses a preparation method for an amorphous alloy / pure copper layered composite material. The preparation method comprises the following steps of: performing rheological behavior processing on an amorphous alloy through a cold-liquid-phase region temperature, enabling a micro bulge part of an amorphous alloy connecting surface to generate plastic deformation to increase a close contact area, and activating diffusion among atoms to change metal key connection into firm metallurgical connection; connecting the amorphous alloy treated in step to fine copper under control of connecting technological parameters, preserving the heat and diffusing, diffusing atoms in an interface region on which the amorphous alloy is in contact with the pure copper, improving diffusion connection reliability of dissimilar materials, reducing formation of defects, improving connecting strength of the layered material, and finally obtaining the amorphous alloy / pure copper layered composite material. The preparation method has the characteristics of adopting matrix and keeping an amorphous state and being wide in scope of application.

Description

technical field [0001] The invention relates to the field of materials, in particular to a preparation method of an amorphous alloy / pure copper layered composite material. Background technique [0002] The room temperature brittleness of amorphous alloys severely restricts their wide application as high-strength engineering materials due to the limitation of deformation mechanism. In order to improve the room temperature plasticity and fracture toughness of amorphous alloys and expand the application value of amorphous alloys, as early as the 1980s, foreign scholars began to use electroplating to process amorphous alloy strips to obtain amorphous / metal layered composite materials. The amorphous / metal layered composite material obtained by compounding metal and amorphous alloy strips forms a large number of shear bands due to the restriction of the metal during the deformation process, which inhibits the growth of cracks and improves the room temperature fracture brittleness....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/00C23C10/28
CPCC23C10/28C22C1/11
Inventor 孙琳琳雷红义孟培媛张毅党波
Owner XIJING UNIV
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