Method for measuring inverse pole figure by inclining and rotating test sample

Abstract

The invention discloses a method for measuring an inverse pole figure by inclining and rotating a test sample. The method comprises the following steps of determining peak positions of diffraction peaks of the test sample and a standard sample and back bottom positions of the left side and the right side of the peaks; arranging the test sample and a detector at initial positions; obtaining the intensity and the back bottom intensity of all the diffraction peaks of the test sample under different inclination angles during rotation, calculating the net intensity of the diffraction peaks to obtain the net intensity of the diffraction peaks of the standard sample, calculating a ratio of the net intensity of the diffraction peaks of the test sample to the net intensity of the diffraction peaks of the standard sample under the different inclination angles, and calculating an average value of all the ratios to obtain an extreme density value of each diffraction peak; and marking the extreme density values of all the diffraction peaks on the inverse pole figure to finish a measurement process. During the measurement of the inverse pole figure, the test sample can be inclined and is rotated around 360 degrees by taking a normal of the test sample as a rotating shaft, so that all orientation crystal particles make contributions to the extreme density of the inverse pole figure. A measurement result and the material performance have a good corresponding relationship, and the scientificity is high.

Description

technical field [0001] The invention relates to a method for measuring an inverse pole figure, in particular to a method for measuring an inverse pole figure by tilting and rotating a sample. Background technique [0002] The orientation distribution structure in which the polycrystalline orientation distribution state deviates significantly from random distribution is called texture, and texture has a direct impact on the properties of steel materials (such as silicon steel sheet, automobile sheet, etc.). Therefore, in order to develop new materials with better performance, how to accurately analyze and measure the texture of materials is of great significance. There are generally pole figure methods, inverse pole figure methods, and orientation distribution function methods for measuring and analyzing the texture of materials. [0003] The traditional method of measuring inverse pole figures by wide-angle X-ray diffractometer is generally to use short-wavelength monochrom...

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Problems solved by technology

[0007] In summary, there is a deviation between the measured results of the existing method and the prop

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