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Method for forming amorphous alloy part

a technology of amorphous alloys and alloy parts, which is applied in the field of forming amorphous alloy parts, can solve the problems of narrow shaping temperature range, difficult to maintain, and adversely affecting product quality, and achieves good deformation properties, small solidification and contraction coefficient, and smooth surface.

Inactive Publication Date: 2017-09-14
INST OF METAL RESEARCH - CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention describes a method for forming precise amorphous alloy parts under low pressure at the solidification temperature of the alloy. This method is efficient, cost-saving, and results in high-quality products with smooth surface, compact structure, and no shrinkage holes. The technical process is short, and the method is effective in achieving the desired shape of the alloy part.

Problems solved by technology

However, pores having irregular shapes and sizes tend to form on the surface and in the core of the product, adversely affecting the product quality.
The range of the shaping temperatures is narrow and difficult to maintain.
In addition, the method involves amorphous base materials, which are difficult to manufacture.

Method used

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  • Method for forming amorphous alloy part
  • Method for forming amorphous alloy part
  • Method for forming amorphous alloy part

Examples

Experimental program
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Effect test

example 1

[0027]The shaping process of amorphous alloy part in the example is as follows:

[0028]1. Composition of the master alloy (atomic percentage): 32.8% of Titanium, 30.2% of Zirconium, 5.3% of Nickel, 9% of Copper, and 22.7% of Beryllium.

[0029]2. Melting the master alloy: the material of the master alloy is prepared and is placed in a crucible. Air is exhausted to form a vacuum at a pressure of between 5×10−3 and 5×10−1 Pa (or inert gas is filled in). The master alloy with uniform composition are prepared by induction melting or electric arc melting. The master alloy is casted to form regular master alloy ingot (in the shape of rod, plate, or flake, etc.)

[0030]3. Cutting the master alloy: the casted master alloy ingot is cut using cutting equipment according to the weight of required amorphous alloy part.

[0031]4. Shaping and processing amorphous alloy part: the cut master alloy is placed on a melting platform. Air in the vacuum chamber is exhausted to form a vacuum at a pressure of betwe...

example 2

[0032]The example follows a basic process in Example 1, except that composition of the master alloy (atomic percentage) is: 54.73% of Zirconium, 29.75% of Copper, 4.97% of Nickel, 9.95% of Aluminum, 0.1% of Silver, and 0.5% of Yttrium. The amorphous alloy part prepared in the example is shown in FIG. 3.

[0033]As shown in FIGS. 2-3, the amorphous alloy part prepared by the method has smooth surface and accurate size. Analyzed from the scanning electron microscope, the amorphous alloy part has compact structure and no shrinkage hole (as shown in FIG. 4).

[0034]The alloy used in the embodiments of the invention can be any amorphous alloy, such as Titanium-based amorphous alloy, Zirconium-based amorphous alloy, Iron-based amorphous alloy, Nickel-based amorphous alloy, Magnesium-based amorphous alloy, Palladium-based amorphous alloy, Silver-based amorphous alloy, Hafnium-based amorphous alloy, Platinum-based amorphous alloy, or other amorphous alloy component of other system.

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Abstract

A method for forming an amorphous alloy part, including: placing a master alloy on a melting platform; heating and melting the master alloy under vacuum to yield an alloy melt; stopping heating and allowing the alloy melt to cool to a temperature between a glass transition temperature and a liquidus temperature thereof; and press-forming and cooling the alloy melt, to form the amorphous alloy part.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation-in-part of International Patent Application No. PCT / CN2015 / 083961 with an international filing date of Jul. 14, 2015, designating the United States, now pending, and further claims foreign priority benefits to Chinese Patent Application No. 201410719338.2 filed Nov. 30, 2014. The contents of all of the aforementioned applications, including any intervening amendments thereto, are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]Field of the Invention[0003]The invention relates to a method for forming an amorphous alloy part.[0004]Description of the Related Art[0005]Typically, there are two methods for preparing an amorphous alloy part: vacuum die-casting forming technique and alloy-shaping technique in the supercooled liquid region.[0006]In the vacuum die-casting forming technique, the alloy melt is filled in a mold cavity under pressure, and cooled, to achieve filling and shaping at liq...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B22D41/005B22D27/15B22D17/00B22D17/02
CPCB22D41/005B22D17/00B22D27/15B22D17/02C22C45/00C22C45/10
Inventor ZHANG, HAIFENGFU, HUAMENGZHU, ZHENGWANGWANG, AIMINLI, HONGZHANG, HONGWEILI, YANGDELI, WEIRONGTANG, TIEZHUANGYANG, JIEDAN
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI