Full-field Quantitative Statistical Distribution Characterization Method of Precipitated Phase Particles in Metallic Materials

Abstract

The invention belongs to the technical field of quantitative statistical distribution analysis of characteristic maps of microstructures and precipitated phases in metal materials, and relates to a full-field quantitative statistical distribution characterization method of precipitated phase particles in metal materials. The method includes the following steps: electrolytic corrosion of metal material samples, automatic collection of metallographic structure characteristic maps, automatic splicing and fusion of full-field metallographic structure characteristic maps, automatic identification and segmentation of precipitated phase particles, and large-scale full-field precipitation. Quantitative distribution characterization of phase particles. Through the establishment of a mathematical model, the present invention realizes the automatic splicing and fusion of metallographic structure feature maps in a wide range of full field of view in the characteristic area, automatic segmentation and identification of precipitated phase particles, and quickly obtains a full view of a large number of precipitated phases in a large range Quantitative statistical distribution characterization information such as field morphology, quantity, size and distribution, the method has the characteristics of accuracy, high efficiency, and large amount of quantitative distribution characterization information, which is more statistically representative than the conventional single-field image quantitative analysis.

Description

technical field [0001] The invention belongs to the technical field of quantitative statistical distribution analysis of characteristic maps of microstructures and precipitated phases in metal materials, and relates to a full-field quantitative statistical distribution characterization method of precipitated phase particles in metal materials. Background technique [0002] The phases in the material that are distributed in the matrix in a discontinuous state and cannot be surrounded by other phases are collectively referred to as precipitated phases, which are precipitated in the grain or at the grain boundary and have a different crystal structure or lattice constant from the matrix structure. The new phase has an obvious interface with the matrix structure, so the precipitated phase plays a very important role in the steel, and has a great impact on the strength, toughness, plasticity, deep drawability, fatigue, wear, fracture, corrosion and many important physical and chem...

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Problems solved by technology

[0005] In view of the above technical problems, the purpose of the present invention is to provide a full-field quantitative statistical distribution characterization method of precipitated phase particles in metal materials, to eliminate the subjective error caused by manual selection of the field of view and to avoid the statistical omission of precipitated phase particles, to solve The problem of inefficiency caused by manual modification of images, while taking into account the characteristics of inhomogeneity of the material itself, provides a more representative, comprehensive, accurate and efficient characterization of the quantitative statistical distribution of precipitated phase particles in a large range of the metal material. detection means

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