Single pulse spectral statistical analysis method for particle size distribution of inclusion on surface of metal material

A single pulse spectral statistical analysis method for particle size distribution of inclusions on a surface of an oversized metal material, comprising the following steps:

• S1:
• analyzing a surface of an oversized metal material through single pulse discharge continuous excitation scanning to obtain mixed distribution data of spectral intensities of solid solution and inclusions of an inclusion element on the surface of the oversized metal material;
• S2:
• summarizing the mixed distribution data of the spectral intensities of the solid solution and the inclusions of the inclusion element to obtain a relative frequency distribution diagram of the spectral intensities of the solid solution and the inclusions of the inclusion element;
• S3:
• performing fitting processing on the relative frequency distribution diagram of the spectral intensities to obtain distribution data of spectral intensities of the inclusions;
• S4:
• taking a test portion with a set area in the surface of the oversized metal material as a sample, and obtaining quantity and particle size information of inclusions of the sample;
• and
• S5:
• correlating the particle size information of the inclusions of the sample with the distribution data of the spectral intensities of the inclusions, and determining a corresponding relation between particle sizes and the spectral intensities of the inclusions to obtain a particle size distribution result of the inclusions on the surface of the oversized metal material, wherein
• the operation of analyzing through the single pulse discharge continuous excitation scanning in S1 is performing pulse excitation once based on using a spark light source, wherein only a plurality of single sparks are excited on the surface of the metal material, and collecting intensities of the plurality of single sparks to complete, with a relative movement of the light source, continuous scanning analysis on the surface of the metal material.