Method for rapidly presenting specific crystal plane distribution characteristic of polycrystalline material

Abstract

The invention provides a method for rapidly presenting a specific crystal plane distribution characteristic of a polycrystalline material. The method has high efficiency, cost is low and operation issimple. A plurality of specific crystal plane orientation characteristics in the polycrystalline material can be accurately presented. The method mainly comprises the following steps of EBSD sample preparation, sample surface information collection by using an electron backscattering diffraction analysis technology, data processing, specific crystal plane presentation and the like. The method canbe used for research of a grain size, distribution and an orientation relationship under the specific crystal plane characteristic, such as the research of an orientation genetic phenomenon of an alloy material in heat treatment and a hot working process. Secondly, the method can be used to explore the relationship between oxidation resistance and corrosion resistance performance of the material and the specific crystal plane distribution characteristic of the material surface. Besides, the method can be used to quantitatively study a combined effect of different crystal planes in the materialand a variety of specific crystal planes on the material performance so as to guide to make reasonable heat treatment and a processing technology in actual production, and fully exert or improve service performance of the material.

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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