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Method to toughen and malleableize the amorphous alloy by ultrasonic processing

An amorphous alloy and ultrasonic treatment technology, which is used in the field of improving the properties of bulk amorphous alloys, can solve problems such as failure, and achieve the effects of excellent fracture strength, simple equipment and process, and improvement of room temperature plastic deformation capacity.

Inactive Publication Date: 2010-06-16
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the plastic deformation of amorphous alloys is concentrated in a highly localized shear band at room temperature, it generally only shows limited plastic deformation at room temperature, and its failure mode is sudden failure.

Method used

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  • Method to toughen and malleableize the amorphous alloy by ultrasonic processing
  • Method to toughen and malleableize the amorphous alloy by ultrasonic processing
  • Method to toughen and malleableize the amorphous alloy by ultrasonic processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] High energy ultrasonic treatment composition is Zr 55 Al 10 Ni 5 Cu 30 The amorphous alloy, concrete steps are as follows:

[0026] (A) contact the horn of the ultrasonic oscillator with the bottom of the cooling water tank;

[0027] (B) Zr 55 Al 10 Ni 5 Cu 30 The bulk amorphous alloy is placed in the cooling water tank, and the temperature of the cooling water is adjusted to maintain at 27°C;

[0028] (C) the step of adjusting the output power of the ultrasonic oscillator and the oscillation time; the output power of the ultrasonic oscillator is that the power per unit area is 3 × 10 4 W / mm 2 and remain stable; the ultrasonic oscillation time is 60 hours.

[0029] Test equipment: pressure testing machine

[0030] The Zr after processing according to embodiment 1 method 55 Al 10 Ni 5 Cu 30 The results of the compression test of the bulk amorphous alloy prove that its compressive plasticity is increased from less than 2% to 10% at a temperature of 25°C, an...

Embodiment 2

[0033] High energy ultrasonic treatment composition is Zr 61.88 Al 10 Ni 10.12 Cu 18 The amorphous alloy, concrete steps are as follows:

[0034] Contact the horn of the ultrasonic oscillator with the bottom of the cooling water tank;

[0035] Will Zr 61.88 Al 10 Ni 10.12 Cu 18 The bulk amorphous alloy is placed in the cooling water tank, and the temperature of the cooling water is adjusted to maintain at 30°C;

[0036] Adjust the output power and oscillation time of the ultrasonic oscillator; the output power of the ultrasonic oscillator is 2.7×10 per unit area 4 W / mm 2 and remain stable; the ultrasonic oscillation time is 48 hours.

[0037] According to the Zr after the method of embodiment 2 is processed 61.88 Al 10 Ni 10.12 Gu 18 The results of the compression test of the bulk amorphous alloy prove that its compressive plasticity at a temperature of 25 ° C increases from less than 4.5% to 6.5%, and the increase rate is 44.4%, see Figure 4 shown.

[0038] D...

Embodiment 3

[0040] High energy ultrasonic treatment composition is Zr 65 Al 7.5 Ni 10 Cu 17.5 The amorphous alloy, concrete steps are as follows:

[0041] Contact the horn of the ultrasonic oscillator with the bottom of the cooling water tank;

[0042] Will Zr 65 Al 7.5 Ni 10 Cu 17.5 The bulk amorphous alloy is placed in the cooling water tank, and the temperature of the cooling water is adjusted to maintain at 25°C;

[0043] Adjust the output power and oscillation time of the ultrasonic oscillator; the output power of the ultrasonic oscillator is that the power per unit area is 3 × 10 4 W / mm 2 and remain stable; the ultrasonic oscillation time is 55 hours.

[0044] According to the Zr after the method of embodiment 3 is processed 65 Al 7.5 Ni 10 Cu 17.5 The results of the compression test of the bulk amorphous alloy prove that its compression plasticity at a temperature of 25°C increases from less than 2.5% to 9%, and the increase rate is 300%, see Figure 5 shown.

[0045]...

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Abstract

The invention discloses a method to toughen and malleableize the amorphous alloy by high-energy ultrasonic processing. The steps adopted by the method to realize the toughening and malleableizing process for amorphous alloy are: placing the amorphous alloy in the cooling water tank with a temperature lower than the crystallization temperature of the amorphous alloy and then loading a oscillator frequency with a power less than 3*104 W / mm 2 per unit area to conduct the toughening and malleableizing process. The amorphous alloy treated by the method of the invention has a great improvement in plastometric set capability at room temperature and a increase in thermal discharge in relaxation, with the precondition that the rupture strength does not change. The process techonolgy in the invention is simple and easy, so it is suitable for industrialized mass production.

Description

technical field [0001] The invention relates to a method for improving the properties of a bulk amorphous alloy, more particularly, a method for using a transducer to improve the strengthening and toughening of an amorphous alloy by using a transducer to improve high-energy ultrasound. Background technique [0002] Bulk amorphous alloys not only have excellent magnetic properties, corrosion resistance, and wear resistance, but also have very outstanding mechanical properties, and their tensile, impact fracture strength, and hardness are all excellent. However, since the plastic deformation of amorphous alloys is concentrated in highly localized shear bands at room temperature, it generally only shows limited plastic deformation at room temperature, and its failure mode is sudden failure. This is a major obstacle to its widespread application as an engineering material. Importing energy into the amorphous alloy is one of the ways to solve this problem. Contents of the inve...

Claims

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Application Information

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IPC IPC(8): C22F3/00
Inventor 张涛李新锐逄淑杰
Owner BEIHANG UNIV
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