Sample preparation method for electron back scattering diffraction analysis of thin steel and iron material

A technology of electron backscattering and iron and steel materials, which is applied in the field of sample preparation for EBSD analysis of thin-gauge steel and iron materials, and achieves the effects of simple and fast operation, high observation effect, high quality and low cost

Inactive Publication Date: 2014-07-09
武钢集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a sample preparation method for electron backscatter diffraction analysis of thin-gauge steel materials in view of the deficiencies in the above-mentioned prior art, which solves the difficult problem of EBSD sample preparation of thin-gauge steel materials. specific polishing equipment

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  • Sample preparation method for electron back scattering diffraction analysis of thin steel and iron material
  • Sample preparation method for electron back scattering diffraction analysis of thin steel and iron material
  • Sample preparation method for electron back scattering diffraction analysis of thin steel and iron material

Examples

Experimental program
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Effect test

Embodiment 1

[0030] The thin-gauge steel material used in the examples is 0.5 mm bainitic steel, and the equipment used for electron backscatter diffraction analysis is a FEI Quanta400 scanning electron microscope equipped with an Oxford EBSD accessory.

[0031] A sample preparation method for electron backscattered diffraction analysis of thin-gauge iron and steel materials, comprising the steps of:

[0032] (1) Use a precision cutting machine to cut bainite steel into small pieces with a plate size of 1.5cm×1.5cm as a sample, and use sandpaper to grind one side of the sample plate surface. The grinding plane is the B side;

[0033] (2) Select a stainless steel cylinder with a height of 2cm and a diameter of 3cm as the sample stage, place the sample stage on a heating plate and heat it to 60°C, melt an appropriate amount of paraffin evenly on the sample stage, and then sample B The side A sticks to the molten paraffin, and the A side does not touch the paraffin until the paraffin solidif...

Embodiment 2

[0045] The thin-gauge steel material used in the examples is 0.3 mm low-carbon alloy steel, and the equipment used for electron backscatter diffraction analysis is a FEI Quanta400 scanning electron microscope equipped with an Oxford EBSD accessory.

[0046] A sample preparation method for electron backscattered diffraction analysis of thin-gauge iron and steel materials, comprising the steps of:

[0047] (1) Use a precision cutting machine to cut low-carbon alloy steel into small pieces with a plate size of 1.2cm×1.0cm as a sample, and use sandpaper to grind one side of the sample plate. The grinding plane is the B side;

[0048] (2) Select a stainless steel cylinder with a height of 2cm and a diameter of 3cm as the sample stage, place the sample stage on a heating plate and heat it to 70°C, melt an appropriate amount of paraffin evenly on the sample stage, and then sample B The side A sticks to the molten paraffin, and the A side does not touch the paraffin until the paraffi...

Embodiment 3

[0053] The thin-gauge steel material used in the examples is 0.2 mm low-carbon ferritic steel, and the equipment used for electron backscatter diffraction analysis is a FEI Quanta400 scanning electron microscope equipped with Oxford EBSD accessories.

[0054] A sample preparation method for electron backscattered diffraction analysis of thin-gauge iron and steel materials, comprising the steps of:

[0055] (1) Use a precision cutting machine to cut low-carbon ferritic steel into small pieces with a plate size of 1.0cm×1.0cm as samples, and use sandpaper to smooth one side of the sample plate, and the ground surface is the A surface , the unground surface is the B surface;

[0056] (2) Select a stainless steel cylinder with a height of 2cm and a diameter of 3cm as the sample stage, place the sample stage on a heating plate and heat it to 65°C, melt an appropriate amount of paraffin evenly on the sample stage, and then sample B The side A sticks to the molten paraffin, and the ...

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Abstract

The invention discloses a sample preparation method for electron back scattering diffraction analysis of a thin steel and iron material. The sample preparation method comprises the following steps: (1) taking a small plate surface of the thin steel and iron material as a sample, grinding one surface of the sample to be flat by using sand paper, and taking the flatly ground surface as a surface A; (2) selecting a cylindrical body as a sample table, uniformly melting a proper amount of paraffin on the sample table, and sticking the sample onto the molten paraffin until the paraffin is solidified and the sample is fixed to the sample table; (3) grinding and polishing the surface A of the sample fixed on the sample table; corroding the polished sample in natal for 3-15 seconds; and (4) observing and analyzing the sample processed through the steps (1) to (3) in electron back scattering diffraction equipment. The method is used for preparing a high-quality EBSD analysis sample without residual stress; the observation effect and quality are relatively high, so that the method is very suitable for preparing the EBSD analysis sample of the thin steel and iron material with the thickness not exceeding 0.5mm.

Description

technical field [0001] The invention relates to sample preparation for observation and analysis of electron backscattering diffraction, in particular to a sample preparation method for EBSD analysis of thin-gauge iron and steel materials. Background technique [0002] Electron back-scattered diffraction (EBSD) technology is based on the analysis of the diffraction Kikuchi bands formed by the electron beam excited and formed on the surface of the inclined sample in the scanning electron microscope, and then determines the crystal structure, orientation and related information. Crystalline materials play an important role in the structural characterization and analysis. In steel materials, EBSD is mainly used in phase, structure identification, orientation analysis, microtexture analysis, grain boundary analysis, grain size measurement, etc. [0003] As a surface analysis technique, EBSD only obtains information within a thickness of tens of nanometers on the surface of the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/32G01N23/203
Inventor 王志奋韩荣东孙宜强杨志婷周顺兵余晴张萍欧阳珉路刘敏王俊霖
Owner 武钢集团有限公司
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