Device and test method of alloy solidification synchronous radiation imaging static magnetic field composite direct current effect

A direct current and static magnetic field technology, applied in the direction of using radiation for material analysis, etc., can solve problems such as device blanks, and achieve the effects of improving performance, increasing magnetic induction intensity, and reducing volume

Active Publication Date: 2015-12-09
DALIAN UNIV OF TECH
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Problems solved by technology

[0004] The object of the present invention is to propose a static magnetic field composite direct current action device for alloy solidification synchrotron radiation imag

Method used

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  • Device and test method of alloy solidification synchronous radiation imaging static magnetic field composite direct current effect
  • Device and test method of alloy solidification synchronous radiation imaging static magnetic field composite direct current effect
  • Device and test method of alloy solidification synchronous radiation imaging static magnetic field composite direct current effect

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Embodiment 1

[0037] In order to meet the requirements of the experimental method and experimental device for using synchrotron radiation X-ray imaging technology to study the electromagnetically regulated alloy solidification process, this embodiment provides an alloy solidification synchrotron radiation imaging static magnetic field compound DC action device, such as figure 1 As shown, including power supply circuit and micro heating furnace;

[0038] The micro-heating furnace is a cavity with a set accommodation space. The cavity in this embodiment is a rectangular box, and its specific size is controlled below 200cm×100cm×30cm, so as to adapt to synchrotron radiation X-rays and CCD detectors. The spacing of the micro-heating furnace cavity is provided with a heating unit 5, the heating unit 5 of the micro-heating furnace is a Peltier element or a resistance heating element, and its maximum heating temperature is as high as 500 ° C; in the micro-heating furnace cavity A heat insulating ...

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Abstract

The invention provides a device and a test method of alloy solidification synchronous radiation imaging static magnetic field composite direct current effect. The device includes a power supply circuit and a micro heating furnace. A heating unit is arranged in a cavity of the micro heating furnace. Two opposite side walls of the micro heating furnace are respectively provided with light passing holes, wherein the axial lines of the light passing holes are coincided. Permanent magnets are arranged on outer sides of the two side walls having the light passing holes on the micro heating furnace. A sample bracket for fixing a sample is arranged in the micro heating furnace at the position that an X-ray passing through the light passing holes can be irradiated vertically on the plane the sample arranged. The power supply circuit includes a direct current generation device and electrodes, wherein the two electrodes are detachably fixed on two ends of the sample respectively and are connected to the direct current generation device through wires. The device is simple in structure and can achieve synchronous radiation imaging of alloy solidification under a static magnetic field composite direct current field effect.

Description

technical field [0001] The invention relates to a metal material synchrotron radiation imaging technology, in particular to an alloy solidification synchrotron radiation imaging static magnetic field composite DC action device and an experimental method. Background technique [0002] Applying an external field (electric field or magnetic field) during the solidification process of the alloy can produce electromagnetic force effects, electromigration effects, Joule thermal effects, etc. to change the temperature transmission, solute diffusion, melt flow and interface morphology inside the alloy melt, thereby affecting the crystal grains. The nucleation and growth process changes the microstructure of metal materials, and finally affects its comprehensive mechanical properties. Many scholars have explored the influence of different external fields (AC / DC, pulse current, pulse magnetic field, traveling wave magnetic field, etc.) However, there is still no systematic and consis...

Claims

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Application Information

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IPC IPC(8): G01N23/04
Inventor 王同敏杨芬芬曹飞康慧君曹志强李廷举
Owner DALIAN UNIV OF TECH
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