Cubic System Material texture quantitative test and analysis method

Abstract

The invention provides a quantitative test analysis method for cubic system material texture, which comprises the following steps of: testing three incomplete pole figure data with the reflection method; calculating orientation distribution function (ODF) coefficient W1mn with two step method; dividing an Euler space with 1 DEG interval, and calculating the orientation density of the entire Euler space; and selecting asymmetrical sub-Euler space 5 zone and 6 zone as a quantitative range for texture component, reducing the orientation points outside the 5 zone and 6 zone with an equivalent orientation manner, and performing addition to the texture component in a specified texture volume model with micro-volume manner to complete the whole quantifying process. The invention solves the technical problem of quantitation of ODF texture, and puts the quantitative analysis technique of cubic system material texture into practical application. The inventive method is especially suitable for composition and performance determination and technological optimization of oriented Goss texture.

Description

technical field [0001] The invention relates to a metal material texture testing technology, in particular to a quantitative testing and analysis method for cubic system material texture. Background technique [0002] Texture measurement results rich in macroscopic statistical significance are often used in industrial production, while texture micro-area detection technology is often used in research, neutron diffraction is extremely expensive, and currently has no application in routine testing in industry, X-ray Diffraction is the most effective method in texture detection. [0003] It should be pointed out that the ODF of the material texture cannot be directly measured by the polycrystalline diffraction technique at present, but can be calculated by a set of pole figures (data) or inverse pole figures (data) of the material. Since the pole figure can be measured directly, conveniently and accurately, the calculation of ODF from the pole figure data becomes the only real...

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Problems solved by technology

[0049] Material texture has become inevitable from qualitative analysis to quantitative analysis. The above-mentioned texture testing and analysis technology can only give the distribution of ODF orientation density, and cannot quantitatively give the volume percentage of a certain texture component.

At present, only Northeastern University has quantitatively analyzed the fiber texture based on the inverse pole figure data (Xu Zhongjie, Jiang Qiwu, Zhao Xiang, Wang Fu, Liang Zhide. Quantitative numerical values ​​of fiber texture components on the inverse pole figure of cubic materials Integral method [J], Physical Testing, 2001(6): 37~48), this analysis technique can only give a cluster of texture components parallel to a certain macro direction ({hkl} or ), industrial production can be applied to the research of materials such as automobile sheets and non-oriented silicon steel; but it cannot give a certain surface texture component ({hkl} ) cannot solve the technical problem of quantitative description of a single texture component in scientific research and large-scale production, especially in the preparation technology of oriented silicon steel, the accurate quantitative description of Gaussian texture is required to optimize the process The basis provided and the criteria for judging whether the finished product is qualified

There is no report on the quantitative method of ODF surface texture components at home and abroad

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