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A method for improving the plasticity of amorphous alloy at room temperature

An amorphous alloy and amorphous technology, which is applied in the field of improving room temperature plasticity of amorphous alloys, can solve problems such as difficult plasticity improvement

Inactive Publication Date: 2016-02-24
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The two methods mentioned above to improve the plasticity are to improve the plasticity by changing the internal structure of the bulk metallic glass and changing the inherent properties of the material, but it is difficult to solve the problem of monolithic amorphous and formed bulk metallic glass structures. Therefore, the research and development of a new method to improve the plasticity of metallic glass is imperative.

Method used

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  • A method for improving the plasticity of amorphous alloy at room temperature
  • A method for improving the plasticity of amorphous alloy at room temperature
  • A method for improving the plasticity of amorphous alloy at room temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0020] The first is the preparation of the electroplating solution: the ratio of the electroplating solution is

[0021] Nickel sulfate heptahydrate 280g / L

[0022] Nickel chloride hexahydrate 40g / L

[0023] Boric acid 40g / L

[0024] The specific operation method is: add an appropriate amount of high-purity water into the beaker, and weigh the quality of the medicine with a balance according to the proportion. Since boric acid is not easy to dissolve, first add boric acid into the beaker, and heat it with water at 65°C in a water bath. Stir continuously until fully dissolved. Then add nickel sulfate and nickel chloride in turn, stir until completely dissolved, and finally continue to add high-purity water to the beaker to the specified amount. The prepared electroplating solution is dark green.

[0025] Then there is the process of electroplating, which is an electrochemical process and also a redox process. The basic process of electroplating is to immerse the part in a ...

Embodiment approach 2

[0038] The heating temperature of the water bath is 60°C when preparing the electroplating solution, the heating temperature of the water bath is 35°C during electroplating, and the electroplating time is 5 hours. Others are the same as Embodiment 1.

Embodiment approach 3

[0040]The workpiece to be plated is a 65*5*1.5mm plate, the power supply voltage is 1.20V, the heating temperature of the water bath is 70°C when preparing the electroplating solution, the heating temperature of the water bath is 45°C during electroplating, and the electroplating time is 3 hours. Others are the same as Embodiment 1 .

[0041] In this method, the thickness of the plating layer can be adjusted by adjusting the voltage and changing the size of the current to adjust the speed of electroplating and changing the time of electroplating.

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Abstract

A method for improving the plasticity of amorphous alloys at room temperature, which belongs to the field of material technology research, specifically relates to a method for improving and enhancing the plasticity of amorphous alloys by coating the surface with a layer of metallic nickel for the characteristics of high strength but very low plasticity of amorphous alloys. method of crystal plasticity. It is characterized in that the plasticity of the formed bulk metallic glass structure is improved by means of electroplating. The basic process is as follows: the first step is to use a high-vacuum non-consumable arc melting furnace to produce the required real amorphous test pattern ; The second step is to carry out pre-plating treatment on the pattern; the third step is to coat the surface of the amorphous sample with a layer of crystalline metal by electroplating. The plasticity of the amorphous composite material produced by the invention is obviously improved, and the amorphous structure still maintains the original glass state.

Description

technical field [0001] The invention relates to a method for improving the plasticity of amorphous alloys at room temperature, which belongs to the field of material technology research, and specifically relates to a method for improving the plasticity of amorphous alloys by coating a layer of metallic nickel on the surface of the amorphous alloys for the characteristics of high strength but very low plasticity. A method to improve amorphous plasticity. Background technique [0002] Bulk amorphous alloys have attracted the attention of many material scientists due to their high elastic limit, high tensile and compressive strength, and strong corrosion resistance. However, the vast majority of bulk amorphous alloys exhibit brittle fracture when loaded at room temperature due to the formation of highly localized shear bands during deformation, which shear when further deformed. The band softens, and finally breaks at the softened shear plane, which limits the engineering appl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/12C25D7/00
Inventor 乔珺威孟萌萌杨慧君周禾丰
Owner TAIYUAN UNIV OF TECH
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