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Preparation device and method for increasing formation size of aluminum-based amorphous alloy

An amorphous alloy and preparation device technology, which is applied in the direction of metal processing equipment, indicating equipment/measurement equipment configuration, manufacturing tools, etc., can solve the problems of lack of temperature measurement means and difficulty in capturing temperature changes, so as to ensure rapid heat dissipation and improve Effects of cooling rate and increasing melt pressure

Inactive Publication Date: 2017-08-22
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for the solidification stage of amorphous alloy preparation, there is still no relevant temperature measurement method. Due to the size limitation of amorphous alloy and the rapid solidification process, within milliseconds, for the solidification process of amorphous alloy It is quite difficult to capture temperature changes, and this research has been in a blank state. So far, no relevant reports have been found that provide real-time monitoring of temperature and increase the size of Al-based amorphous alloys.

Method used

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  • Preparation device and method for increasing formation size of aluminum-based amorphous alloy
  • Preparation device and method for increasing formation size of aluminum-based amorphous alloy
  • Preparation device and method for increasing formation size of aluminum-based amorphous alloy

Examples

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Embodiment 1

[0040] see figure 1 and figure 2 structure shown. The preparation device of the present invention is used to prepare large-size bulk Al-based amorphous alloy rods, and aims to improve the glass-forming ability of Al-based amorphous alloys from the perspective of preparation process optimization. like figure 1 As shown, the ejector pin 1 hollowed out in the center of the preparation structure can facilitate the real-time monitoring of the temperature of the Al-based amorphous sample in the copper mold 2 by the infrared thermometer 12, and the mechanical pump exhaust port 3 and the molecular pump exhaust port 4 can ensure a sealed cavity The good vacuum degree within 11 can be read by vacuum gauge according to the requirements to get the ideal vacuum condition. The protective gas inlet 5 can be fed with protective gases such as helium and argon to further ensure a good atmosphere in the sealed cavity 11, ensure that the oxygen content in the cavity 11 reaches the minimum to ...

Embodiment 2

[0052] The difference from Example 1 is that when the angle between the gas channel in the copper mold and the central mold column is 90°, shrinkage cavities and porosity appear in the prepared sample, and the cooling rate is low after the conversion of the measured temperature, and finally The samples obtained had low amorphousness.

Embodiment 3

[0054] The difference from Example 1 is that when the melt temperature is 750° C., the cooling rate is extremely low after conversion of the measured temperature during the preparation process, and the prepared sample has few amorphous regions.

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Abstract

The invention discloses a preparation device and method for increasing the formation size of an aluminum-based amorphous alloy, and belongs to the technical field of amorphous alloy. The device comprises a closed cavity, a copper die, an alloy melting system, a temperature measuring system and a hydraulic propelling device, wherein the speed of melt which rushes into the die is increased by the hydraulic propelling device; the area of the melt which is in contact with the die is increased to improve heat exchange efficiency of an interface; by the autonomously designed copper die structure, the melt is in full contact with the die, meanwhile, gas is discharged fully, the heat exchange efficiency of the interface is improved, and the cooling speed of the melt is also increased. The real-time temperature measuring device is arranged on the top of the device, by flexible design on a central hollowed-out ejector rod, the temperature of various solidification stages of the melt can be monitored, therefore, the cooling speeds of the melt in different time periods are obtained, by analysis and comparison of the cooling speeds, the cooling speed of the melt can be increased finally by adjustment of technological parameters such as stamping speed, heating temperature and vacuum degree, optical technological conditions are obtained, and then the formation ability of the Al-based amorphous alloy is greatly improved.

Description

technical field [0001] The invention relates to the technical field of amorphous alloys, in particular to a preparation device and a preparation method for improving the formation size of aluminum-based amorphous alloys. Background technique [0002] Aluminum-based amorphous alloys have properties far superior to those of traditional aluminum alloys, including high specific strength, high corrosion resistance, and high toughness, and are low in cost. They are engineering component materials with great market potential and are deeply loved by scientists from all over the world. , however, its limited ability to form amorphous crystals greatly limits its development and application. The largest critical dimension of Al-based amorphous alloys reported so far is a rod with a diameter of 1.5 mm. Therefore, how to greatly and effectively improve the formation ability of aluminum-based amorphous has become one of the worldwide problems to be solved urgently. The preparation of alu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D21/04B22D27/04B22D2/00C22C45/08
CPCB22D21/04B22D2/006B22D27/04C22C45/08
Inventor 吕威闫杨伯俊孙文海张锁德王建强
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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