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Crystal boundary display method for TAI and IF steel composite titanium steel plate

A display method and a technology of titanium steel plates, which are applied in the field of titanium steel plates and can solve problems such as low efficiency

Inactive Publication Date: 2020-01-24
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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Problems solved by technology

[0004] The invention provides a method for displaying the grain boundary Ti-α phase and steel ferrite phase of a titanium steel plate compounded with TA1 and IF steels, solving the problem of observing the microstructure of the titanium steel clad plate according to the step-by-step corrosion method, which needs to be corroded separately. Titanium and steel two kinds of grain boundaries and jigsaw puzzle, the problem of inefficiency

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  • Crystal boundary display method for TAI and IF steel composite titanium steel plate

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with embodiment.

[0022] A method for displaying grain boundaries of a titanium steel plate compounded with TA1 and IF steel, comprising the following steps:

[0023] S1. Prepare a sample and polish the sample.

[0024] To prepare the sample, the titanium steel plate is prepared to grow to 5-25mm, and the sample is 5-15mm high. First, it is ground and initially polished to obtain a polished metallographic surface to achieve a mirror effect. The purpose is to remove scratches on the surface of the grinding sample. After the sample is prepared, the sample is subjected to vibration polishing through a vibrating medium. The main purpose of vibration polishing is to remove the residual stress on the surface of the sample. The vibration medium is one of suspensions of silicon oxide, aluminum oxide and magnesium oxide, for example, vibration polishing: the amplitude is 40-80%, and the vibration time is 1-4 ...

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Abstract

The invention discloses a crystal boundary display method for a TAI and IF steel composite titanium steel plate, and relates to the technical field of crystal boundary display. By the crystal boundarydisplay method, the problems that two crystal boundaries of titanium and steel are needed to be respectively corroded and splicing is performed to cause low efficiency when a microstructure of the titanium and steel composite plate is observed according to a step corrosion method. The crystal boundary display method for the TAI and IF steel composite titanium steel plate comprises the following steps of S1, fabricating a sample, and polishing the sample; S2, fixing the sample on a scanning electron microscope sample table; S3, observing the sample by a scanning electron microscope, and adjusting an image to an appropriate focus; S4, acquiring a diffraction image of the sample by an electron back scattering diffraction device; S5, setting a scanning parameter of a scanning electron microscope, and acquiring the scanning parameter; and S6, processing a data result to obtain crystal boundary morphology images of two sides of the titanium steel plate. Display of a crystal boundary Ti-Alpha phase of the titanium steel plate and a ferritic phase of steel on the same image is achieved without the step corrosion method.

Description

technical field [0001] The invention relates to the technical field of grain boundary display, in particular to a method for displaying the crystal grains of two phases of titanium and steel in the same picture for a titanium steel plate compounded with TA1 and IF steel. Background technique [0002] Titanium has the advantages of light weight, high specific strength, and strong corrosion resistance, and can exist relatively stably in acidic, alkaline, and neutral salt solutions. Therefore, titanium is widely used in various chemical reactors, heat exchangers, and corrosion-resistant corrosion field, but the cost of titanium is high. The titanium-steel clad plate produced by explosive cladding or rolling cladding method not only has the corrosion resistance of titanium, but also has the strength and plasticity of ordinary steel plate as a structural part. The most important thing is its cost reduction, so it is widely used in petroleum Engineering fields such as chemical in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/2202G01N23/2251G01N23/2005G01N23/203
CPCG01N23/2005G01N23/203G01N23/2202G01N23/2251
Inventor 张达富刘兆华刘希斌
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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