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Method for improving measurement precision of inverse pole figure

A technology of measurement accuracy and inverse pole figure, applied in the field of measurement, it can solve the problem of unrepresentative strength, and achieve the effect of ensuring accuracy and overcoming poor accuracy.

Inactive Publication Date: 2014-04-09
WUHAN IRON & STEEL (GROUP) CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Apparently a discontinuous circle intersects the point detector and the detected intensities are not representative

Method used

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  • Method for improving measurement precision of inverse pole figure
  • Method for improving measurement precision of inverse pole figure
  • Method for improving measurement precision of inverse pole figure

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Experimental program
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Embodiment Construction

[0012] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0013] The present invention uses a conventional X-ray instrument measuring device for inverse pole figure measurement, in order to ensure that the sample to be tested can rotate during the measurement process, to ensure that the measurement of the inverse pole figure is carried out during the rotation of the test sample , In addition, a set of rotating sample device is provided, which is also conventional and belongs to the category of common knowledge in this field, but there is no report applied to the measurement of inverse pole figure.

[0014] The rotating sample device can be connected to the goniometer axis plane of the X-ray measuring device through a fixed connecting piece, or the sample rotating device can be conveniently fixed on the goniometer axis plane with plasticine.

[0015] Except that the sample to be tested is rot...

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Abstract

The invention discloses a method for improving measurement precision of an inverse pole figure. According to the method provided by the invention, in a measurement process of the inverse pole figure, a test sample to be measured is rotated around the normal of a test surface at uniform speed with rotation speed of not less than one round within a measurement period for measuring a step size of each diffraction angle. With the adoption of the method provided by the invention, the test sample to be tested is rotated around the normal of the test surface at uniform speed in the measurement process, so that the effect of measurement for one time is equal to a mean value obtained by arranging the test sample within an angle range of 0-360 degrees through a plurality of times of multi-angle measurements; the measurement precision of the inverse pole figure can be ensured within one time of measurement, so that the defect that the measurement method of the inverse pole figure has poor precision in a large-grained test sample can be effectively overcome.

Description

technical field [0001] The invention belongs to the technical field of measurement methods, and in particular relates to a method for improving the measurement accuracy of an inverse pole figure applied to oriented silicon steel and automobile plates. Background technique [0002] X-ray diffraction inverse pole figure method is a texture analysis method with clear meaning, short experiment period and convenient quantitative comparison, especially suitable for analyzing the texture of non-oriented electrical steel. [0003] The name of the inverse pole figure is relative to the pole figure. The full name of the polar figure is the polar projection of the crystal, with the three characteristic appearance directions of the sample's surface normal (ND), rolling direction (RD) and transverse (TD) as the coordinate frame, and the inverse pole figure is parallel The projection of the crystal axis density of various {hkl} grains on a certain appearance plane of the sample (abbrevia...

Claims

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Application Information

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IPC IPC(8): G01N23/20
Inventor 李长一张福斌毛炯辉王向欣郑泽林方泽民黎世德周顺兵王志奋
Owner WUHAN IRON & STEEL (GROUP) CORP