Occluded foreign substance in metal materials particle-size in-situ statistical distribution analysis method

Abstract

The present invention belongs to the field of physical property measurement and analysis of material, and relates to the grain size calculation for various inclusions in metal material. The in-situ counting and analysis of inclusions in metal material includes the following steps: conventional analysis to obtain relevant data of the grain size distribution of various inclusions in the sample via metal structure detection, chemical phase state analysis, and electronic microscope plus energy spectrum analysis; in-situ statistical analysis with in-situ metal analyzer for continuous scanning of the sample to obtain single spark spectrum strength data corresponding to the original position of the sample; system analysis to obtain single spark spectrum strength data and determine signal threshold; establishing mathematic analysis mode and comparing the data obtained in different methods to obtain the grain size distribution information of various kinds of inclusions and output result.

Description

technical field [0001] The invention belongs to the field of analyzing materials by measuring the physical properties of the materials, and mainly relates to the particle size calculation of various inclusions in metal materials. Background technique [0002] Inclusions in iron and steel materials exist as independent phases in the steel, which destroys the continuity of the steel matrix, increases the inhomogeneity of the steel structure, and has a strong impact on the properties of the steel, while the unevenly distributed inclusion particles are the The culprit of steel performance. To this end, it is necessary to comprehensively detect the shape, particle size and distribution of inclusions in steel, and to adjust or control certain alloy elements and harmful elements in steel in a timely manner, so that the smelted steel can obtain the best performance required. One of the goals pursued by today's iron and steel metallurgical systems. [0003] In the existing detectio...

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Problems solved by technology

[0003] In the existing detection technology of inclusions in steel, the metallographic detection method can detect the shape and particle size distribution of inclusions, but it is difficult to make quantitative analysis, and only for the distribution of inclusions in a small area

The chemical analysis method can carry out the quantitative calculation of the inclusions, but it cannot realize the analysis of the state, shape and particle size distribution of the inclusions. The ten-energy spectrum analysis of the electron microscope can analyze the shape and composition of the inclusions, but it is only limited to a small range. Microanalysis

In short, the above-mentioned traditional analysis methods have certain shortcomings, and the distribution of inclusions cannot correspond to the original position in the sample. In addition, the analysis process is cumbersome and the analysis speed is too slow, so it is no longer suitable for the current rapid analysis requirements.

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