Structure positioning sample preparation method of sheet

Abstract

The invention provides a structure positioning sample preparation method of a sheet. The method includes the steps that 1, in the thickness direction of the sheet, a sheet surface sample and a cross section sample are perpendicularly taken in a cutting mode perpendicular to the sheet surface, the sheet surface sample and the cross section sample are fixed together, and the sheet surface of the sheet surface sample and the thickness surface of the cross section sample are kept in the same plane; 2, the sheet surface sample and the cross section sample are subjected to metallurgical polishing or corrosion, changing of structures is observed, and the corresponding sheet thickness position generated when the cross section structure changes is determined; 3, the sheet surface of the sheet surface sample and the thickness surface of the cross section sample, which are located in the same plane, are polished at the same so that the thickness of the sheet surface sample can reach the needed sheet thickness position determined in the step 2. According to the method, structure positioning and thickness positioning are combined, and multilevel positioning analysis is achieved; especially, for nondeterminacy of structure changing of a penetrating layer and a plating layer in the thickness direction, a prepared sample can be flexibly and accurately positioned according to structure changing, and therefore practicability is high.

Description

technical field [0001] The invention relates to the field of tissue inspection of steel plates, in particular to a tissue positioning sample preparation method for thin plates. Background technique [0002] According to the thickness, the steel plate is divided into four categories: special thick plate, thick plate, medium plate and thin plate. In my country, steel plates with a thickness greater than 60 mm are called extra-thick plates, steel plates with a thickness of 20 to 60 mm are called thick plates, steel plates with a thickness of 4.5 to 20 mm are called medium plates, and steel plates with a thickness of 0.2 to 4 mm are called thin plates. [0003] As we all know, for metal materials such as iron and steel, the composition and process determine its structure, and the structure determines its performance. The testing and research of tissues is the key to improving ingredients and processes and improving performance. The organization mentioned here includes microstr...

AI Technical Summary

Problems solved by technology

This method cannot inspect the structure of the thin plate along the thickness direction

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