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Preparation method of low-carbon steel sample for electron back scattering diffraction analysis

A technology of electron backscattering and low-carbon steel, which is applied in the preparation of samples for electron backscattering diffraction analysis and the preparation of low-carbon steel samples for electron backscattering diffraction analysis, which can solve the problems of poor sample reproducibility and low calibration rate , to achieve the effect of simple operation, avoiding poor reproducibility and good repeatability

Inactive Publication Date: 2017-06-09
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing a low-carbon steel sample for electron backscatter diffraction analysis, which mainly solves the technical problems of low calibration rate and poor sample reproducibility of the existing low-carbon steel sample for electron backscatter diffraction analysis

Method used

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  • Preparation method of low-carbon steel sample for electron back scattering diffraction analysis
  • Preparation method of low-carbon steel sample for electron back scattering diffraction analysis
  • Preparation method of low-carbon steel sample for electron back scattering diffraction analysis

Examples

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Effect test

Embodiment 1

[0030] The steel plate used in Example 1 is a low-carbon IF steel with a thickness of 2.0 mm, and the cross-section of the sample is analyzed by EBSD microstructure. The equipment for EBSD analysis was FEI Quanta450 scanning electron microscope equipped with Oxford EBSD accessories.

[0031] A method for preparing a low-carbon steel sample for electron backscattered diffraction analysis, comprising the steps of:

[0032] 1) Use a metallographic special cutting machine to cut a steel plate with a surface size of 15mm×15mm, and the surface to be analyzed is a cross section, and use the Mecapress3 mosaic machine steel plate of France Press to make a mosaic sample;

[0033] 2) Place the mosaic sample on the Buehler phoenix4000X semi-automatic dynamic grinding machine, and mechanically grind the mosaic sample. The grinder uses sandpaper with a particle size of 180 mesh, 400 mesh, 800 mesh, and 1200 mesh to grind the mosaic sample for 20 minutes respectively. The speed is 100RPm, t...

Embodiment 2

[0039] The steel plate in Example 2 is a low-carbon alloy steel HR700F with a thickness of 5.0 mm, and the cross-section of the sample is analyzed by EBSD microstructure. The equipment for EBSD analysis was FEI Quanta450 scanning electron microscope equipped with Oxford EBSD accessories.

[0040] A method for preparing a low-carbon steel sample for electron backscattered diffraction analysis, comprising the steps of:

[0041] 1) Use a metallographic special cutting machine to cut out a steel plate with a surface size of 15mm×15mm, and the surface to be analyzed is a cross section, and use the Mecapress3 mosaic machine steel plate of France Press to make a mosaic sample;

[0042] 2) Put the mosaic sample on the Buehler phoenix4000X semi-automatic grinding machine, and mechanically grind the mosaic sample. The grinder uses sandpaper with a particle size of 180 mesh, 400 mesh, 800 mesh, and 1200 mesh to grind the mosaic sample for 30 minutes respectively. The speed is 200RPm, th...

Embodiment 3

[0048] The steel plate in Example 3 is a low-carbon microalloy dual-phase steel DP600 with a thickness of 4.0 mm, and the cross-section of the sample is analyzed by EBSD microstructure. The equipment for EBSD analysis was FEI Quanta450 scanning electron microscope equipped with Oxford EBSD accessories.

[0049] A method for preparing a low-carbon steel sample for electron backscattered diffraction analysis, comprising the steps of:

[0050] 1) Use a metallographic special cutting machine to cut a steel plate with a surface size of 15mm×15mm, and the surface to be analyzed is a cross section, and use the Mecapress3 mosaic machine steel plate of France Press to make a mosaic sample;

[0051] 2) Place the mosaic sample on the Buehler phoenix4000X semi-automatic dynamic grinding machine, and mechanically grind the mosaic sample. The grinder uses sandpaper with a particle size of 180 mesh, 400 mesh, 800 mesh, and 1200 mesh to grind the mosaic sample for 20 minutes respectively. Th...

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Abstract

The invention relates to a preparation method of a low-carbon steel sample for electron back scattering diffraction analysis and mainly solves the technical problem that an existing low-carbon steel sample for electron back scattering diffraction analysis has low indexing rate and poor sample repeatability. The preparation of the low-carbon steel sample for the electron back scattering diffraction analysis comprises the following steps: 1) cutting a low-carbon steel plate to manufacture into an embedded sample; 2) mechanically grinding the embedded sample; 3) mechanically polishing the embedded sample; 4) polishing the embedded sample in a vibrating mode; 5) cutting a piece of slice with the thickness of 1 to 3mm from the embedded sample which is polished in the vibrating mode with a side to be observed as standard, taking a sample from the slice, sequentially washing through deionized water and alcohol and blowing dry. The electron back scattering diffraction analysis sample obtained according to the method is put into electron back scattering diffraction equipment to be observed and analyzed. The preparation method disclosed by the invention is simple to operate and wide in adaptability, and the sample has good repeatability.

Description

technical field [0001] The invention relates to a method for preparing a sample for electron backscatter diffraction analysis, in particular to a method for preparing a low-carbon steel sample for electron backscatter diffraction analysis, and belongs to the field of sample preparation for physical detection of 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 electron beam excitation and formation on the inclined sample surface in scanning electron microscope, so as to determine the crystal structure, orientation and related information. EBSD is mainly used in grain orientation analysis, micro texture analysis, grain boundary and grain size measurement, etc. Since the EBSD technology needs to deflect the observation surface of the sample by 70°, and the electron beam is excited on the observation surface to form a diffraction Kikuchi belt for analy...

Claims

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Application Information

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IPC IPC(8): G01N1/32
Inventor 刘学伟周丽萍赵楠
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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