A method for quickly displaying the distribution characteristics of specific crystal planes in polycrystalline materials

Abstract

The purpose of the present invention is to provide a method for quickly presenting the distribution characteristics of specific crystal planes of polycrystalline materials. This method has high efficiency, low cost, simple operation, and can accurately present the characteristics of multiple specific crystal plane orientations inside the polycrystalline material. The present invention mainly includes the steps of EBSD sample preparation, electron backscattering diffraction analysis technology to collect sample surface information, data processing and specific crystal face presentation; the present invention can be used for research on grain size, distribution and orientation relationship under specific crystal face characteristics , such as the study of the genetic orientation phenomenon of alloy materials during heat treatment and thermal processing; secondly, it can be used to explore the relationship between the oxidation resistance and corrosion resistance of materials and the distribution characteristics of specific crystal planes on the surface of materials; in addition, it can also be used to quantitatively study the The joint effects of different crystal planes and multiple specific crystal planes on material properties are used to guide the formulation of reasonable heat treatment and processing technology in actual production, so as to fully exert or improve the service performance of materials.

Description

technical field [0001] The invention belongs to the technical field of backscattered electron diffraction analysis and the field of material crystallography, and specifically relates to a method for rapidly presenting the distribution characteristics of specific crystal planes of materials by using electron backscattered diffraction (EBSD) technology. Background technique [0002] Most solid materials in nature, such as metals, ceramics, and minerals, are polycrystalline, which are composed of many individual independent grains. The crystal grains in polycrystalline materials, the distribution characteristics of the crystal plane orientation in the reference coordinate system are called orientation. Texture (also known as preferred orientation) will appear in the polycrystal when the orientations of the grains in the polycrystal gather together. Generally, materials will have a certain texture in the original state or after processing due to the influence of various externa...

AI Technical Summary

Problems solved by technology

At present, the qualitative direction is mostly used to study the influence of specific crystal planes on material properties. Some researchers also use the method of preparing single crystals to study the influence of independent crystal grains on specific crystal planes on material properties. However, the preparation of single crystals is very difficult and impossible. It truly reflects the environment of the grains of the actual service materials and the interaction between them, so the research results may be highly subjective

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