Method for improving surface quality of plastic metal electron back scattering diffraction sample

Abstract

The invention relates to a method for improving the surface quality of a plastic metal electron back scattering diffraction sample. The method comprises the following steps of sample preparation, grinding, mechanical polishing, electrolytic polishing and ion etching. The method has the advantages that residual traces of sample preparation on the surface of the sample can be eliminated due to polishing treatment; mechanical polishing treatment can further eliminate abrasive paper polishing residual scratches on the surface; the stress layer on the surface of the sample can be removed through electrolytic polishing and ion etching treatment, so that the characterization quality of electron backscatter diffraction is improved, the surface quality of the sample is improved, the surface stresslayer is reduced, the dissolvable rate of the sample is improved, and an electron backscatter diffraction result with higher quality is obtained.

Description

technical field [0001] The invention relates to a method for improving the surface quality of plastic metal electron backscattering diffraction samples. Background technique [0002] With the rapid development of industrialization, people's demand for high-strength metal structural materials is also increasing. Metal plastic forming technology is an effective method to improve the strength of metal materials. After metal plastic processing, not only its shape and size have changed, but its internal structure and strength can also be improved and enhanced. Moreover, the strength of metal materials and its microstructure closely related. Therefore, the microstructure of metal samples determines the performance of their macroscopic mechanical properties. Usually, after people plastically deform metal materials, it is necessary to observe and characterize the corresponding microstructure, and analyze the strengthening mechanism based on this, so as to provide a basis for the d...

AI Technical Summary

Problems solved by technology

Since the diffracted electrons in the use of electron backscatter diffraction technology come from the sample surface with a depth of only tens of nanometers, any pollution, stress layer, and flatness on the sample surface will affect the results of electron backscatter diffraction, resulting in the final obtained The quality of the diffraction pattern is not high, and there are usually a large number of plastic distortion areas inside the plastic metal, which makes it difficult to obtain accurate experimental results in the electron backscatter diffraction characterization

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