Method for preparing fe-al-ta multifunctional integrated material by Bridgman directional solidification technology

A fe-al-ta, directional solidification technology, applied in the field of metallurgy, can solve the problems of low utilization rate, single performance, single material performance, etc., and achieve the effect of prolonging service life and improving utilization rate

Active Publication Date: 2020-10-09
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of existing materials such as low utilization rate and single performance, the object of the present invention is to provide a method for preparing Fe-Al-Ta multifunctional integrated material using Bridgman directional solidification technology, through Bridgman directional solidification Technology to prepare a composite material that has specific properties in a specific area and can also integrate multiple functions
In turn, it effectively overcomes the defects and shortcomings of short life and poor performance of self-assembled materials, and at the same time can effectively solve the problem of single material performance, so that the entire material has diversified performance, which can meet the requirements of the rapid development of modern high technology. The Urgent Need for Performance Structural Materials

Method used

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  • Method for preparing fe-al-ta multifunctional integrated material by Bridgman directional solidification technology
  • Method for preparing fe-al-ta multifunctional integrated material by Bridgman directional solidification technology
  • Method for preparing fe-al-ta multifunctional integrated material by Bridgman directional solidification technology

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1) Fix the corundum tube on the draw rod, and then put the wire-cut test bar into it, ensuring that the corundum tube and the test bar are in the center of the graphite sleeve. Turn on the mechanical pump and molecular pump in turn to vacuum until the vacuum degree is 4.0×10 -2 At Pa, the heating power is adjusted step by step to 2.5Kw, 5Kw and 7Kw. During heating, the molecular pump and mechanical pump are turned off when the composite vacuum count drops to 0. After heating for 20 minutes, the pumping rate and stroke (pumping The pulling rate is the rate at which the sample moves downward into the cooling liquid, such as 6μm / s; the pulling stroke refers to the distance of downward movement) for pulling. Turn off the heating power after the drawing is finished, and the circulating water can be turned off after 30 minutes to cool down with the furnace. After 90 minutes, the directional solidified sample can be taken out of the furnace after it is completely cooled.

[0041]...

Embodiment 2

[0043] 1) Fix the corundum tube on the draw rod, and then put the wire-cut test bar into it, ensuring that the corundum tube and the test bar are in the center of the graphite sleeve. Turn on the mechanical pump and molecular pump in turn to vacuum until the vacuum degree is 4.0×10 -2 At Pa, the heating power is adjusted step by step to 2.5Kw, 5Kw and 7Kw. During heating, the molecular pump and mechanical pump are turned off when the composite vacuum count drops to 0. After heating for 20 minutes, the pump will be pumped according to the set drawing rate and drawing stroke. Pull. Turn off the heating power after the drawing is completed, and the circulating water can be turned off after 30 minutes to cool down with the furnace. After 90 minutes, the directional solidified sample can be taken out of the furnace after it is completely cooled.

[0044] 2) When the material is in service and requires excellent properties such as plasticity, toughness and fatigue resistance, it is dir...

Embodiment 3

[0046] 1) Fix the corundum tube on the draw rod, and then put the wire-cut test bar into it, ensuring that the corundum tube and the test bar are in the center of the graphite sleeve. Turn on the mechanical pump and molecular pump in turn to vacuum until the vacuum degree is 4.0×10 -2 At Pa, the heating power is adjusted step by step to 2.5Kw, 5Kw and 7Kw. During heating, the molecular pump and mechanical pump are turned off when the composite vacuum count drops to 0. After heating for 20 minutes, the pump will be pumped according to the set drawing rate and drawing stroke. Pull. Turn off the heating power after the drawing is finished, and the circulating water can be turned off after 30 minutes to cool down with the furnace. After 90 minutes, the directional solidified sample can be taken out of the furnace after it is completely cooled.

[0047] 2) When the material is in service and requires good wear resistance and strength, it is directional solidified from bottom to top at...

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Abstract

The method of preparing Fe-Al-Ta multifunctional integrated material by Bridgman directional solidification technology changes the solidification structure characteristics by changing the solidification rate of different regions of the Fe-Al-Ta ternary alloy, thereby obtaining Fe-Al-Ta All-in-one material. At low solidification rate, the structure is lamellar eutectic. As the solidification rate increases, the structure transforms into rod-like eutectic. When the solidification rate increases further, the structure gradually transforms into spherical eutectic. Since solidification structures with different solidification rates have different properties, the properties of the material can be changed by changing the solidification rate in different regions, so that the properties of the material can be centralized, simplified and diversified, and a material with multiple functions can be prepared. The overall performance of the material is improved.

Description

Technical field [0001] The invention belongs to the field of metallurgical technology, and relates to a specific processing technology for a specific area of ​​a material, and particularly relates to a Fe-Al-Ta eutectic composite material. It is a multifunctional Fe-Al-Ta prepared by using Bridgman directional solidification technology One-piece material approach. Background technique [0002] With the rapid development of modern technology, components continue to develop in the direction of miniaturization, centralization, and large storage capacity. Although composite materials with excellent performance can be prepared by various preparation technologies, there are still many problems in practical applications, such as the material performance tends to be uniform and the utilization rate is low. This is because materials with good comprehensive properties are often required in practical applications, so higher requirements are put forward for the processing and preparation of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D27/04C22C38/06C22C38/12
CPCB22D27/045C22C38/06C22C38/12
Inventor 崔春娟来园园任驰强王丛刘艳云王松苑
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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